# L_2021323EN.01000101.xml

| 13.9.2021 | EN | Official Journal of the European Union | L 323/1 |
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13.9.2021

EN

Official Journal of the European Union

L 323/1

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Only the original UN/ECE texts have legal effect under international public law. The status and date of entry into force of this Regulation should be checked in the latest version of the UN/ECE status document TRANS/WP.29/343, available at: http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29fdocstts.html

UN Regulation No 141 – Uniform provisions concerning the approval of vehicles with regard to their Tyre Pressure Monitoring Systems (TPMS) (2021/1463)

Incorporating all valid text up to:

Incorporating all valid text up to:

01 series of amendments – Date of entry into force: 30 September 2021

This document is meant purely as documentation tool. The authentic and legally binding text is ECE/TRANS/WP.29/2021/10/Rev.1.

CONTENTS

Regulation

| 1. | Scope |
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1.

| 2. | Definitions |
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2.

| 3. | Application for approval |
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3.

| 4. | Approval |
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4.

| 5. | Specifications and tests |
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5.

| 6. | Supplementary information |
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6.

| 7. | Modifications and extension of approval of the vehicle type |
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7.

| 8. | Conformity of production |
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8.

| 9. | Penalties for non-conformity of production |
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9.

| 10. | Production definitively discontinued |
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10.

| 11. | Names and addresses of Technical Services responsible for conducting approval tests, and of Type Approval Authorities |
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11.

| 12. | Transitional provisions |
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12.

Annexes

| 1 | Communication |
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1

| 2 | Arrangements of approval marks |
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2

| 3 | Test requirements for Tyre Pressure Monitoring Systems (TPMS) |
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3

| 4 | Test requirements for Tyre Pressure Refilling Systems (TPRS) and Central Tyre Inflation systems (CTIS) |
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4

| 5 | Compatibility between towing vehicles and towed vehicles with respect to ISO 11992 data communication |
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5

| 6 | Test procedure to assess the functional compatibility of vehicles equipped with ISO 11992 communication interfaces |
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6

1.   Scope

This Regulation applies to the approval of vehicles of category: M1 up to a maximum mass of 3 500 kg, M2, M3, N1, N2, N3, O3 and O4, (1) when equipped with a tyre pressure monitoring system.

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2.   Definitions

For the purposes of this Regulation:

| 2.1. | ‘Approval of a vehicle’ means the approval of a vehicle type with regard to its tyre pressure monitoring system. |
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2.1.

‘Approval of a vehicle’ means the approval of a vehicle type with regard to its tyre pressure monitoring system.

| 2.2. | ‘Vehicle type’ means vehicles which do not differ significantly in such essential aspects as:






  (a) | The manufacturer’s trade name or mark; |
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2.2.

‘Vehicle type’ means vehicles which do not differ significantly in such essential aspects as:

(a)

The manufacturer’s trade name or mark;

| (b) | Vehicle features which significantly influence the performances of the tyre pressure monitoring system; |
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(b)

Vehicle features which significantly influence the performances of the tyre pressure monitoring system;

| (c) | The design of the tyre pressure monitoring system. |
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(c)

The design of the tyre pressure monitoring system.

| 2.3. | ‘Wheel’ means a complete wheel consisting of a rim and a wheel disc; |
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2.3.

‘Wheel’ means a complete wheel consisting of a rim and a wheel disc;

| 2.4 | ‘Twin wheel’ means the fitment of a pair of wheels on one side of an axle, on the same hub; |
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2.4

‘Twin wheel’ means the fitment of a pair of wheels on one side of an axle, on the same hub;

| 2.5. | ‘Tyre’ means a pneumatic tyre, being a reinforced flexible envelope that is provided with, or forms in conjunction with the wheel on which it is mounted, a continuous, essentially toroidal, closed chamber containing a gas (usually air) or a gas and liquid, that is intended normally to be used at a pressure greater than atmospheric pressure;
  Tyres shall be classified as follows:






  (a) | Class C1 tyres –Tyres conforming to UN Regulation No 30; |
| --- | --- | --- |

2.5.

‘Tyre’ means a pneumatic tyre, being a reinforced flexible envelope that is provided with, or forms in conjunction with the wheel on which it is mounted, a continuous, essentially toroidal, closed chamber containing a gas (usually air) or a gas and liquid, that is intended normally to be used at a pressure greater than atmospheric pressure;

Tyres shall be classified as follows:

(a)

Class C1 tyres –Tyres conforming to UN Regulation No 30;

| (b) | Class C2 tyres –Tyres conforming to UN Regulation No 54 and identified by a load capacity index in single formation lower or equal to 121 and a speed category symbol higher or equal to ‘N’; |
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(b)

Class C2 tyres –Tyres conforming to UN Regulation No 54 and identified by a load capacity index in single formation lower or equal to 121 and a speed category symbol higher or equal to ‘N’;

| (c) | Class C3 tyres: Tyres conforming to UN Regulation No 54 and identified by:






  (i) | A load capacity index in single formation higher or equal to 122; or |
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(c)

Class C3 tyres: Tyres conforming to UN Regulation No 54 and identified by:

(i)

A load capacity index in single formation higher or equal to 122; or

| (ii) | A load capacity index in single formation lower or equal to 121 and a speed category symbol lower or equal to ‘M’. |
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(ii)

A load capacity index in single formation lower or equal to 121 and a speed category symbol lower or equal to ‘M’.

| 2.6. | ‘Maximum mass’ means the maximum value of the vehicle stated by the manufacturer to be technically permissible (this mass may be higher than the ‘permissible maximum mass’ laid down by the national administration); |
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2.6.

‘Maximum mass’ means the maximum value of the vehicle stated by the manufacturer to be technically permissible (this mass may be higher than the ‘permissible maximum mass’ laid down by the national administration);

| 2.7. | ‘Maximum axle load’ means the maximum value, as indicated by the manufacturer, of the total vertical force between the contact surfaces of the tyres or tracks of one axle and the ground and resulting from the part of the vehicle mass supported by that axle; this load may be higher than the ‘authorized axle load’ laid down by the national administration. The sum of the axle loads may be greater than the value corresponding to the total mass of the vehicle; |
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2.7.

‘Maximum axle load’ means the maximum value, as indicated by the manufacturer, of the total vertical force between the contact surfaces of the tyres or tracks of one axle and the ground and resulting from the part of the vehicle mass supported by that axle; this load may be higher than the ‘authorized axle load’ laid down by the national administration. The sum of the axle loads may be greater than the value corresponding to the total mass of the vehicle;

| 2.8. | ‘Tyre Pressure Monitoring System (TPMS)’ means a system fitted on a vehicle which can evaluate the pressure of the tyres or the variation of pressure over time and transmit corresponding information to the user while the vehicle is running; |
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2.8.

‘Tyre Pressure Monitoring System (TPMS)’ means a system fitted on a vehicle which can evaluate the pressure of the tyres or the variation of pressure over time and transmit corresponding information to the user while the vehicle is running;

| 2.9. | ‘Cold tyre inflation pressure’ means the tyre pressure at ambient temperature, in the absence of any pressure build-up due to tyre usage; |
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2.9.

‘Cold tyre inflation pressure’ means the tyre pressure at ambient temperature, in the absence of any pressure build-up due to tyre usage;

| 2.10. | ‘Recommended cold inflation pressure (Prec)’ means the pressure recommended for each tyre position by the vehicle manufacturer, for the intended service conditions (e.g. speed and load) of the given vehicle, as defined on the vehicle placard and/or the vehicle owner’s manual; |
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2.10.

‘Recommended cold inflation pressure (Prec

| 2.11. | ‘In service operating pressure (Pwarm)’ means the inflation pressure for each tyre position elevated from the cold pressure (Prec) by temperature effects during vehicle usage; |
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2.11.

‘In service operating pressure (Pwarm

rec

| 2.12. | ‘Test Pressure (Ptest)’ means the actual pressure of the tyre(s) selected for each tyre position after deflation during the test procedure. |
| --- | --- |

2.12.

‘Test Pressure (Ptest

| 2.13. | ‘Cumulative driving time’ means the total time elapsed
  where the vehicle of category M1 up to a maximum mass of 3 500 kg or N1 is driven at speeds equal to or higher than 40 km/h and further deducted by 120 seconds for each event where the vehicle speed drops below 40 km/h
  or
  where the vehicle of other categories than M1 up to a maximum mass of 3 500 kg and N1 is driven at speeds equal to or higher than 30 km/h and further deducted by 120 seconds for each event where the vehicle speed drops below 30 km/h. |
| --- | --- |

2.13.

‘Cumulative driving time’ means the total time elapsed

where the vehicle of category M1 up to a maximum mass of 3 500 kg or N1 is driven at speeds equal to or higher than 40 km/h and further deducted by 120 seconds for each event where the vehicle speed drops below 40 km/h

1

1

or

where the vehicle of other categories than M1 up to a maximum mass of 3 500 kg and N1 is driven at speeds equal to or higher than 30 km/h and further deducted by 120 seconds for each event where the vehicle speed drops below 30 km/h.

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1

| 2.14. | ‘Tyre Pressure Refill System (TPRS)’ means a system fitted on a vehicle which refills underinflated tyres fitted to an axle of the vehicle with air pressure from a vehicle mounted reservoir (infrastructure) while the vehicle is running but not limited to. |
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2.14.

‘Tyre Pressure Refill System (TPRS)’ means a system fitted on a vehicle which refills underinflated tyres fitted to an axle of the vehicle with air pressure from a vehicle mounted reservoir (infrastructure) while the vehicle is running but not limited to.

| 2.15. | ‘Central Tyre Inflation System (CTIS)’ means a system fitted on a vehicle which controls the air pressure in each tyre fitted to an axle of the vehicle with air pressure from a vehicle mounted reservoir (infrastructure) while the vehicle is running but not limited to. |
| --- | --- |

2.15.

‘Central Tyre Inflation System (CTIS)’ means a system fitted on a vehicle which controls the air pressure in each tyre fitted to an axle of the vehicle with air pressure from a vehicle mounted reservoir (infrastructure) while the vehicle is running but not limited to.

3.   Application for approval

| 3.1. | The application for approval of a vehicle type with regard to its tyre pressure monitoring system shall be submitted by the vehicle manufacturer or by his duly accredited representative; |
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3.1.

The application for approval of a vehicle type with regard to its tyre pressure monitoring system shall be submitted by the vehicle manufacturer or by his duly accredited representative;

| 3.2. | It shall be accompanied, in triplicate, by a description of the vehicle type with regard to the items specified in Annex 1 to this Regulation: |
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3.2.

It shall be accompanied, in triplicate, by a description of the vehicle type with regard to the items specified in Annex 1 to this Regulation:

| 3.3. | A vehicle representative of the vehicle type to be approved shall be submitted to the Type Approval Authority or the Technical Service responsible for conducting the approval tests. |
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3.3.

A vehicle representative of the vehicle type to be approved shall be submitted to the Type Approval Authority or the Technical Service responsible for conducting the approval tests.

| 3.4. | The Type Approval Authority shall verify the existence of satisfactory arrangements for ensuring effective control of the conformity of production before type approval is granted. |
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3.4.

The Type Approval Authority shall verify the existence of satisfactory arrangements for ensuring effective control of the conformity of production before type approval is granted.

4.   Approval

| 4.1. | If the vehicle submitted for approval pursuant to this Regulation meets all the requirements of paragraph 5 below, approval of that vehicle type shall be granted. |
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4.1.

If the vehicle submitted for approval pursuant to this Regulation meets all the requirements of paragraph 5 below, approval of that vehicle type shall be granted.

| 4.2. | An approval number shall be assigned to each type approved. Its first two digits (at present 01 for the Regulation as amended by the 01 series of amendments) shall indicate the series of amendments incorporating the most recent major technical amendments made to the regulation at the time of issue of the approval. The same Contracting Party may not assign the same number to another type of vehicle. |
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4.2.

An approval number shall be assigned to each type approved. Its first two digits (at present 01 for the Regulation as amended by the 01 series of amendments) shall indicate the series of amendments incorporating the most recent major technical amendments made to the regulation at the time of issue of the approval. The same Contracting Party may not assign the same number to another type of vehicle.

| 4.3. | Notice of approval or of extension or of refusal of approval of a vehicle type pursuant to this Regulation shall be communicated to the Contracting Parties to the Agreement which apply this Regulation by means of a form conforming to the model in Annex 1 to this Regulation. |
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4.3.

Notice of approval or of extension or of refusal of approval of a vehicle type pursuant to this Regulation shall be communicated to the Contracting Parties to the Agreement which apply this Regulation by means of a form conforming to the model in Annex 1 to this Regulation.

| 4.4. | There shall be affixed, conspicuously and in a readily accessible place specified on the approval form, to every vehicle conforming to a vehicle type approved under this Regulation an international approval mark consisting of: |
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4.4.

There shall be affixed, conspicuously and in a readily accessible place specified on the approval form, to every vehicle conforming to a vehicle type approved under this Regulation an international approval mark consisting of:

| 4.4.1. | A circle surrounding the letter ‘E’ followed by the distinguishing number of the country which granted approval; (2) |
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4.4.1.

A circle surrounding the letter ‘E’ followed by the distinguishing number of the country which granted approval; (2

| 4.4.2. | The number of this Regulation, followed by the letter ‘R’, a dash and the approval number to the right of the markings prescribed in paragraph 4.4.1. |
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4.4.2.

The number of this Regulation, followed by the letter ‘R’, a dash and the approval number to the right of the markings prescribed in paragraph 4.4.1.

| 4.5. | If the vehicle conforms to a vehicle type approved, under one or more regulations annexed to the Agreement, in the country which granted approval under this Regulation, the symbol prescribed in paragraph 4.4.1. need not be repeated; in such a case, the regulation and approval numbers and the additional symbols for all the regulations under which approval has been granted in the country which granted approval under this Regulation shall be placed in vertical columns to the right of the symbol prescribed in paragraph 4.4.1. |
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4.5.

If the vehicle conforms to a vehicle type approved, under one or more regulations annexed to the Agreement, in the country which granted approval under this Regulation, the symbol prescribed in paragraph 4.4.1. need not be repeated; in such a case, the regulation and approval numbers and the additional symbols for all the regulations under which approval has been granted in the country which granted approval under this Regulation shall be placed in vertical columns to the right of the symbol prescribed in paragraph 4.4.1.

| 4.6. | The approval mark shall be clearly legible and be indelible. |
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4.6.

The approval mark shall be clearly legible and be indelible.

| 4.7. | The approval mark shall be placed close to or on the vehicle data plate affixed by the manufacturer. |
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4.7.

The approval mark shall be placed close to or on the vehicle data plate affixed by the manufacturer.

| 4.8. | Annex 2 to this Regulation gives examples of approval marks. |
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4.8.

Annex 2 to this Regulation gives examples of approval marks.

5.   Specifications and tests

| 5.1. | General |
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5.1.

General

| 5.1.1. | Any vehicle of categories M1 up to a maximum mass of 3 500 kg, M2, M3, N1, N2, N3, O3 and O4, in all cases fitted with a Tyre Pressure Monitoring System (TPMS) complying with the definition of paragraph 2.8, shall meet the performance requirements contained in paragraphs 5.1.2 to 5.6 of this Regulation over a wide range of road and environmental conditions encountered within the territory of the Contracting Parties. |
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5.1.1.

Any vehicle of categories M1

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| 5.1.1.1. | A Tyre Pressure Refill System (TPRS) shall be deemed to be equivalent to a Tyre Pressure Monitoring System (TPMS) when the test criteria of Annex 4 to this Regulation are met. In this case TPMS is not required to be installed. |
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5.1.1.1.

A Tyre Pressure Refill System (TPRS) shall be deemed to be equivalent to a Tyre Pressure Monitoring System (TPMS) when the test criteria of Annex 4 to this Regulation are met. In this case TPMS is not required to be installed.

| 5.1.1.2. | A Central Tyre Inflation System (CTIS) shall be deemed to be equivalent to a Tyre Pressure Monitoring System (TPMS) when the test criteria of Annex 4 to this Regulation are met. In this case TPMS is not required to be installed. |
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5.1.1.2.

A Central Tyre Inflation System (CTIS) shall be deemed to be equivalent to a Tyre Pressure Monitoring System (TPMS) when the test criteria of Annex 4 to this Regulation are met. In this case TPMS is not required to be installed.

| 5.1.1.3. | If more than one system as defined in paragraphs 2.8, 2.14 or 2.15 has been installed, all systems shall be approved according to the requirements of this Regulation. |
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5.1.1.3.

If more than one system as defined in paragraphs 2.8, 2.14 or 2.15 has been installed, all systems shall be approved according to the requirements of this Regulation.

| 5.1.2. | The effectiveness of the tyre pressure monitoring system, the tyre pressure refill system or the central tyre inflation system fitted on a vehicle shall not be adversely affected by magnetic or electrical fields. This shall be demonstrated by fulfilling the technical requirements and respecting the transitional provisions of UN Regulation No 10 by applying:






  (a) | The 03 series of amendments for vehicles without a coupling system for charging the Rechargeable Electric Energy Storage System (traction batteries); |
| --- | --- | --- |

5.1.2.

The effectiveness of the tyre pressure monitoring system, the tyre pressure refill system or the central tyre inflation system fitted on a vehicle shall not be adversely affected by magnetic or electrical fields. This shall be demonstrated by fulfilling the technical requirements and respecting the transitional provisions of UN Regulation No 10 by applying:

(a)

The 03 series of amendments for vehicles without a coupling system for charging the Rechargeable Electric Energy Storage System (traction batteries);

| (b) | The 06 series of amendments for vehicles with a coupling system for charging the Rechargeable Electric Energy Storage System (traction batteries). |
| --- | --- |

(b)

The 06 series of amendments for vehicles with a coupling system for charging the Rechargeable Electric Energy Storage System (traction batteries).

| 5.1.3. | For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, the system shall operate from a speed of 40 km/h or below, up to the vehicle’s maximum design speed.
  For vehicles of categories M2, M3, N2, N3, O3 and O4, the system shall operate from a speed of 30 km/h or below, up to the vehicle’s maximum design speed. |
| --- | --- |

5.1.3.

For vehicles of category M1

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For vehicles of categories M2, M3, N2, N3, O3 and O4, the system shall operate from a speed of 30 km/h or below, up to the vehicle’s maximum design speed.

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| 5.1.4. | The vehicle shall fulfil the tests (puncture, diffusion and malfunction) as specified in Annex 3 to this Regulation. |
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5.1.4.

The vehicle shall fulfil the tests (puncture, diffusion and malfunction) as specified in Annex 3 to this Regulation.

| 5.1.5. | If a variant of any vehicle submitted for approval is fitted with twin wheels, that variant shall be used for the tests defined in Annex 3 to this Regulation and one of the tyres on a twin wheel (the ‘test tyre’) must be deflated for the puncture test in 2.5 of Annex 3 to this Regulation. |
| --- | --- |

5.1.5.

If a variant of any vehicle submitted for approval is fitted with twin wheels, that variant shall be used for the tests defined in Annex 3 to this Regulation and one of the tyres on a twin wheel (the ‘test tyre’) must be deflated for the puncture test in 2.5 of Annex 3 to this Regulation.

| 5.1.6. | For vehicles of categories M1 up to a maximum mass of 3 500 kg and N1

  In case of a given warning and if the tyre pressure monitoring system is equipped with a reset function but does not detect a minimum pressure as defined in paragraphs 5.2 and 5.3 after executing the reset function, the reset control shall be designed and/or located inside the vehicle in such a way that the risk of an inadvertent reset by vehicle occupants or cargo is reduced.
  For vehicles where the tyre pressure monitoring system does not detect if the pressure is above a minimum pressure as defined in paragraphs 5.2 and 5.3 after executing the reset function, the tyre pressure monitoring system shall include at least measures avoiding a reset if the vehicle did not become stationary after a pressure warning was issued, and either






  (a) | Measures avoiding inadvertent reset control operation (e.g. shortly touching on the reset control or continuous blocking of the reset control by vehicle occupants or cargo), or |
| --- | --- | --- |

5.1.6.

For vehicles of categories M1

1

In case of a given warning and if the tyre pressure monitoring system is equipped with a reset function but does not detect a minimum pressure as defined in paragraphs 5.2 and 5.3 after executing the reset function, the reset control shall be designed and/or located inside the vehicle in such a way that the risk of an inadvertent reset by vehicle occupants or cargo is reduced.

For vehicles where the tyre pressure monitoring system does not detect if the pressure is above a minimum pressure as defined in paragraphs 5.2 and 5.3 after executing the reset function, the tyre pressure monitoring system shall include at least measures avoiding a reset if the vehicle did not become stationary after a pressure warning was issued, and either

(a)

Measures avoiding inadvertent reset control operation (e.g. shortly touching on the reset control or continuous blocking of the reset control by vehicle occupants or cargo), or

| (b) | An activation by at least two deliberate actions (e.g. in a menu based system). |
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(b)

An activation by at least two deliberate actions (e.g. in a menu based system).

The manufacturer shall provide in the vehicle owner’s handbook, or by any other communication means in the vehicle, the necessary information.

| 5.2. | Tyre pressure detection for incident-related pressure loss. |
| --- | --- |

5.2.

Tyre pressure detection for incident-related pressure loss.

| 5.2.1. | For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of the tyre class C1, the TPMS shall illuminate the warning signal described in paragraph 5.5 within not more than 10 minutes of cumulative driving time after the in service operating pressure in one of the vehicle’s tyres has been reduced by twenty per cent or it is at a minimum pressure of 150 kPa, whichever is higher. |
| --- | --- |

5.2.1.

For vehicles of category M1

1

| 5.2.2. | For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of the tyre class C2, the TPMS shall illuminate the warning signal described in paragraph 5.5 within 10 minutes of cumulative driving time after the in service operating pressure in one of the vehicle’s tyres has been reduced by 20 per cent or it is at a minimum pressure of 220 kPa, whichever is higher. |
| --- | --- |

5.2.2.

For vehicles of category M1

1

| 5.2.3. | For vehicles of category M2, M3, N2 and N3, fitted with tyres of the tyre class C2 or C3, the TPMS shall illuminate the warning signal described in paragraph 5.5 within not more than 10 minutes of cumulative driving time after the in-service operating pressure in one of the vehicle’s rolling tyres in contact with the ground has been reduced by 20 per cent. |
| --- | --- |

5.2.3.

For vehicles of category M2

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2

3

| 5.2.4. | For vehicles of category O3 and O4, fitted with tyres of the tyre class C2 or C3, the TPMS shall illuminate the warning signal described in paragraph 5.5 within not more than 10 minutes of cumulative driving time after the in service operating pressure in one of the vehicle’s rolling tyres in contact with the ground has been reduced by 20 per cent. |
| --- | --- |

5.2.4.

For vehicles of category O3

4

| 5.2.5. | The low tyre pressure warning signal described in paragraph 5.5 shall be illuminated whenever the towed vehicle TPMS provides low tyre pressure warning information via the communication interface described in paragraph 5.6. |
| --- | --- |

5.2.5.

The low tyre pressure warning signal described in paragraph 5.5 shall be illuminated whenever the towed vehicle TPMS provides low tyre pressure warning information via the communication interface described in paragraph 5.6.

| 5.3. | Detection for a tyre pressure level significantly below the recommended pressure for optimum performance including fuel consumption and safety. |
| --- | --- |

5.3.

Detection for a tyre pressure level significantly below the recommended pressure for optimum performance including fuel consumption and safety.

| 5.3.1. | For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of the tyre class C1, the TPMS shall illuminate the warning signal described in paragraph 5.5. within not more than 60 minutes of cumulative driving time after the in service operating pressure in any of the vehicle’s tyres, has been reduced by twenty per cent or it is at a minimum pressure of 150 kPa, whichever is higher. |
| --- | --- |

5.3.1.

For vehicles of category M1

1

| 5.3.2. | For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of the tyre class C2, the TPMS shall illuminate the warning signal described in 5.5 within not more than 60 minutes of cumulative driving time after the in-service operating pressure in any of the vehicle’s tyres has been reduced by 20 per cent or it is at a minimum pressure of 220 kPa, whichever is higher. |
| --- | --- |

5.3.2.

For vehicles of category M1

1

| 5.3.3. | For vehicles of category M2, M3, N2 and N3, fitted with tyres of the tyre class C2 or C3, the TPMS shall illuminate the warning signal within not more than 60 minutes of cumulative driving time after the in-service operating pressure in any of the vehicle’s rolling tyres in contact with the ground has been reduced by 20 per cent. |
| --- | --- |

5.3.3.

For vehicles of category M2

3

2

3

| 5.3.4. | For vehicles of category O3 and O4, fitted with tyres of the tyre class C2 or C3, the TPMS shall transmit an appropriate warning signal described in 5.5 within not more than 60 minutes of cumulative driving time after the in-service operating pressure in any of the vehicle’s rolling tyres in contact with the ground has been reduced by 20 per cent. |
| --- | --- |

5.3.4.

For vehicles of category O3

4

| 5.3.5. | The low tyre pressure warning signal described in paragraph 5.5 shall be illuminated whenever the towed vehicle TPMS provides low tyre pressure warning information via the communication interface described in paragraph 5.6. |
| --- | --- |

5.3.5.

The low tyre pressure warning signal described in paragraph 5.5 shall be illuminated whenever the towed vehicle TPMS provides low tyre pressure warning information via the communication interface described in paragraph 5.6.

| 5.4. | Malfunction detection. |
| --- | --- |

5.4.

Malfunction detection.

| 5.4.1. | The TPMS shall illuminate the warning signal described in paragraph 5.5 not more than 10 minutes after the occurrence of a malfunction that affects the generation or transmission of control or response signals in the vehicle’s tyre pressure monitoring system. |
| --- | --- |

5.4.1.

The TPMS shall illuminate the warning signal described in paragraph 5.5 not more than 10 minutes after the occurrence of a malfunction that affects the generation or transmission of control or response signals in the vehicle’s tyre pressure monitoring system.

| 5.4.2. | The malfunction indication warning signal described in paragraph 5.5 shall be illuminated whenever the towed vehicle TPMS provides a malfunction indication via the communication interface described in paragraph 5.6. |
| --- | --- |

5.4.2.

The malfunction indication warning signal described in paragraph 5.5 shall be illuminated whenever the towed vehicle TPMS provides a malfunction indication via the communication interface described in paragraph 5.6.

| 5.4.3. | The malfunction indication warning signal described in paragraph 5.5 shall be illuminated whenever no valid TPMS information is available from a connected towed vehicle, that is required to have TPMS, via any communication interface described in paragraph 5.6. |
| --- | --- |

5.4.3.

The malfunction indication warning signal described in paragraph 5.5 shall be illuminated whenever no valid TPMS information is available from a connected towed vehicle, that is required to have TPMS, via any communication interface described in paragraph 5.6.

| 5.5. | Warning indication. |
| --- | --- |

5.5.

Warning indication.

| 5.5.1. | The warning indication shall be by means of an optical warning signal conforming to UN Regulation No 121. |
| --- | --- |

5.5.1.

The warning indication shall be by means of an optical warning signal conforming to UN Regulation No 121.

| 5.5.2 | In the case of a vehicle of category N2 or N3 towing at least one vehicle of category O3 or O4, the optical warning signal referred to in paragraph 5.5.1 must indicate whether any warning relates to the individual towing or to the towed vehicle(s). |
| --- | --- |

5.5.2

In the case of a vehicle of category N2

3

3

4

| 5.5.3. | The warning signal shall be activated when the ignition (start) switch is in the ‘on’ (run) position (bulb check). This requirement does not apply to tell-tales shown in a common space. |
| --- | --- |

5.5.3.

The warning signal shall be activated when the ignition (start) switch is in the ‘on’ (run) position (bulb check). This requirement does not apply to tell-tales shown in a common space.

| 5.5.4. | The warning signal must be visible even by daylight; the satisfactory condition of the signal must be easily verifiable by the driver from the driver’s seat. |
| --- | --- |

5.5.4.

The warning signal must be visible even by daylight; the satisfactory condition of the signal must be easily verifiable by the driver from the driver’s seat.

| 5.5.5 | For vehicles of category O3 and O4, the optical warning signal referred to in paragraph 5.5.1 must be displayed to the driver of the towing vehicle of category N2 or N3, as specified in paragraph 5.5.4. |
| --- | --- |

5.5.5

For vehicles of category O3

4

2

3

| 5.5.6. | The malfunction indication may be the same warning signal as the one used to indicate under-inflation. If the warning signal described in paragraph 5.5.1 is used to indicate both under-inflation and a malfunction of the TPMS, the following shall apply: with the ignition (start) switch in the ‘on’ (run) position the warning signal shall flash to indicate a malfunction. After a short period of time the warning signal shall remain continuously illuminated as long as the malfunction exists and the ignition (start) switch is in the ‘on’ (run) position. The flashing and illumination sequence shall be repeated each time the ignition (start) switch is in the ‘on’ (run) position until the malfunction has been corrected. |
| --- | --- |

5.5.6.

The malfunction indication may be the same warning signal as the one used to indicate under-inflation. If the warning signal described in paragraph 5.5.1 is used to indicate both under-inflation and a malfunction of the TPMS, the following shall apply: with the ignition (start) switch in the ‘on’ (run) position the warning signal shall flash to indicate a malfunction. After a short period of time the warning signal shall remain continuously illuminated as long as the malfunction exists and the ignition (start) switch is in the ‘on’ (run) position. The flashing and illumination sequence shall be repeated each time the ignition (start) switch is in the ‘on’ (run) position until the malfunction has been corrected.

| 5.5.7. | The tell-tale of the warning described in paragraph 5.5.1 may be used in a flashing mode in order to provide information about the reset status of the tyre pressure monitoring system in accordance with the owner’s manual of the vehicle. |
| --- | --- |

5.5.7.

The tell-tale of the warning described in paragraph 5.5.1 may be used in a flashing mode in order to provide information about the reset status of the tyre pressure monitoring system in accordance with the owner’s manual of the vehicle.

| 5.6. | Communications interface between towing and towed vehicles |
| --- | --- |

5.6.

Communications interface between towing and towed vehicles

| 5.6.1 | Vehicles of category N2 or N3 towing at least one vehicle of category O3 or O4 and vehicles of category O3 and O4 shall be equipped with a communication interface to exchange TPMS data information between towing and towed vehicles. This may be achieved as a wired or a wireless interface, provided that the TPMS equipment in the towing vehicle and in the towed vehicle(s) are compatible. |
| --- | --- |

5.6.1

Vehicles of category N2

3

3

4

3

4

| 5.6.1.1. | The data communication with wired equipment shall be based on the braking electric control line conforming to ISO 11992-1:2019 and ISO 11992-2:2014 and be a point-to-point type using the seven pin connector according to ISO 7638-1:2018 or ISO 7638-2:2018 or an appropriate automated connector.
  Other wired specifications may be used, provided that the TPMS equipment in the towing vehicle and in the towed vehicle(s) are compatible and fulfil the same functional requirements. |
| --- | --- |

5.6.1.1.

The data communication with wired equipment shall be based on the braking electric control line conforming to ISO 11992-1:2019 and ISO 11992-2:2014 and be a point-to-point type using the seven pin connector according to ISO 7638-1:2018 or ISO 7638-2:2018 or an appropriate automated connector.

Other wired specifications may be used, provided that the TPMS equipment in the towing vehicle and in the towed vehicle(s) are compatible and fulfil the same functional requirements.

| 5.6.1.1.1. | The support of messages is specified within Part A of Annex 5 to this Regulation for the towing vehicle and the towed vehicle(s). |
| --- | --- |

5.6.1.1.1.

The support of messages is specified within Part A of Annex 5 to this Regulation for the towing vehicle and the towed vehicle(s).

| 5.6.1.1.2. | The functional compatibility of towing and towed vehicles equipped with data communication lines as described in paragraph 5.6.1.1. above shall be assessed at the time of type approval by checking that the relevant provisions as specified in Part A of Annex 5 are fulfilled.
  Annex 6 to this Regulation provides a procedure for tests that may be used to perform this assessment. |
| --- | --- |

5.6.1.1.2.

The functional compatibility of towing and towed vehicles equipped with data communication lines as described in paragraph 5.6.1.1. above shall be assessed at the time of type approval by checking that the relevant provisions as specified in Part A of Annex 5 are fulfilled.

Annex 6 to this Regulation provides a procedure for tests that may be used to perform this assessment.

| 5.6.1.2. | In the case of a point-to-point link between a towing vehicle ECU and a towed vehicle ECU, there shall be an open standard specification to allow an ECU providing TPMS functionality, which does not constitute part of the point-to-point link, to connect, communicate and operate via the towed vehicle ECU which constitutes part of the point-to-point link, i.e. standardised gatewaying. This data communication interface is specified in Part B of Annex 5. |
| --- | --- |

5.6.1.2.

In the case of a point-to-point link between a towing vehicle ECU and a towed vehicle ECU, there shall be an open standard specification to allow an ECU providing TPMS functionality, which does not constitute part of the point-to-point link, to connect, communicate and operate via the towed vehicle ECU which constitutes part of the point-to-point link, i.e. standardised gatewaying. This data communication interface is specified in Part B of Annex 5.

| 5.6.1.3. | In the case of data communication with wireless equipment, the communication link shall be an open standard specification. Provision shall be made to ensure that the wireless link is set up between the physically connected vehicles (as opposed to other vehicles in the vicinity), and that information shared over this link is secure against outside interference. The same functional requirements as required in paragraph 5.6.1.1 shall be fulfilled. |
| --- | --- |

5.6.1.3.

In the case of data communication with wireless equipment, the communication link shall be an open standard specification. Provision shall be made to ensure that the wireless link is set up between the physically connected vehicles (as opposed to other vehicles in the vicinity), and that information shared over this link is secure against outside interference. The same functional requirements as required in paragraph 5.6.1.1 shall be fulfilled.

6.   Supplementary information

| 6.1. | The owner’s manual, if any, of the vehicle shall contain at least the following information: |
| --- | --- |

6.1.

The owner’s manual, if any, of the vehicle shall contain at least the following information:

| 6.1.1. | A statement that the vehicle is equipped with such a system (and information how to reset the system, if the actual system includes such a feature). |
| --- | --- |

6.1.1.

A statement that the vehicle is equipped with such a system (and information how to reset the system, if the actual system includes such a feature).

| 6.1.2. | An image of the tell-tale symbol described in paragraph 5.5.1 (and an image of the malfunction tell-tale symbol, if a dedicated tell-tale is used for this function). |
| --- | --- |

6.1.2.

An image of the tell-tale symbol described in paragraph 5.5.1 (and an image of the malfunction tell-tale symbol, if a dedicated tell-tale is used for this function).

| 6.1.3. | Additional information about the significance of the low tyre pressure warning tell-tale illuminating and a description of the corrective action to be undertaken if this happens, including the reset procedure if the actual system includes such a feature. |
| --- | --- |

6.1.3.

Additional information about the significance of the low tyre pressure warning tell-tale illuminating and a description of the corrective action to be undertaken if this happens, including the reset procedure if the actual system includes such a feature.

| 6.2. | If no owner’s manual is supplied with the vehicle, the information required in paragraph 6.1 above shall be displayed in a prominent place on the vehicle. |
| --- | --- |

6.2.

If no owner’s manual is supplied with the vehicle, the information required in paragraph 6.1 above shall be displayed in a prominent place on the vehicle.

7.   Modifications and extension of approval of the vehicle type

| 7.1. | Every modification of the vehicle type as defined in paragraph 2.2 of this Regulation shall be notified to the Type Approval Authority which approved the vehicle type. The Type Approval Authority may then either: |
| --- | --- |

7.1.

Every modification of the vehicle type as defined in paragraph 2.2 of this Regulation shall be notified to the Type Approval Authority which approved the vehicle type. The Type Approval Authority may then either:

| 7.1.1. | Consider that the modifications made do not have an adverse effect on the conditions of the granting of the approval and grant an extension of approval; |
| --- | --- |

7.1.1.

Consider that the modifications made do not have an adverse effect on the conditions of the granting of the approval and grant an extension of approval;

| 7.1.2. | Consider that the modifications made affect the conditions of the granting of the approval and require further tests or additional checks before granting an extension of approval. |
| --- | --- |

7.1.2.

Consider that the modifications made affect the conditions of the granting of the approval and require further tests or additional checks before granting an extension of approval.

| 7.2. | Confirmation or refusal of approval, specifying the alterations, shall be communicated by the procedure specified in paragraph 4.3 above to the Contracting Parties to the Agreement applying this Regulation. |
| --- | --- |

7.2.

Confirmation or refusal of approval, specifying the alterations, shall be communicated by the procedure specified in paragraph 4.3 above to the Contracting Parties to the Agreement applying this Regulation.

| 7.3. | The Type Approval Authority shall inform the other Contracting Parties of the extension by means of the communication form which appears in Annex 1 to this Regulation. It shall assign a serial number to each extension, to be known as the extension number. |
| --- | --- |

7.3.

The Type Approval Authority shall inform the other Contracting Parties of the extension by means of the communication form which appears in Annex 1 to this Regulation. It shall assign a serial number to each extension, to be known as the extension number.

8.   Conformity of production

| 8.1. | The conformity of production procedures shall comply with those set out in Schedule 1 to the Agreement (E/ECE/TRANS/505/Rev.3), with the following requirements: |
| --- | --- |

8.1.

The conformity of production procedures shall comply with those set out in Schedule 1 to the Agreement (E/ECE/TRANS/505/Rev.3), with the following requirements:

| 8.2. | The Type Approval Authority which has granted type approval, may at any time verify the conformity of production in each production facility. The normal frequency of these verifications shall be at least once per year. |
| --- | --- |

8.2.

The Type Approval Authority which has granted type approval, may at any time verify the conformity of production in each production facility. The normal frequency of these verifications shall be at least once per year.

9.   Penalties for non-conformity of production

| 9.1. | The approval granted in respect of a vehicle type pursuant to this Regulation may be withdrawn if the requirements laid down in paragraph 8 are not complied with. |
| --- | --- |

9.1.

The approval granted in respect of a vehicle type pursuant to this Regulation may be withdrawn if the requirements laid down in paragraph 8 are not complied with.

| 9.2. | If a Contracting Party to the Agreement, which applies this Regulation, withdraws an approval it has previously granted, it shall forthwith so notify the other Contracting Parties applying this Regulation, by means of a copy of the approval form bearing at the end, in large letters, the signed and dated annotation ‘APPROVAL WITHDRAWN’. |
| --- | --- |

9.2.

If a Contracting Party to the Agreement, which applies this Regulation, withdraws an approval it has previously granted, it shall forthwith so notify the other Contracting Parties applying this Regulation, by means of a copy of the approval form bearing at the end, in large letters, the signed and dated annotation ‘APPROVAL WITHDRAWN’.

10.   Production definitively discontinued

If the holder of the approval completely ceases to manufacture a type of vehicle approved in accordance with this Regulation, he shall so inform the authority which granted the approval. Upon receiving the relevant communication that authority shall inform thereof the other Contracting Parties to the Agreement applying this Regulation by means of a copy of the approval form bearing at the end, in large letters, the signed and dated annotation ‘PRODUCTION DISCONTINUED’.

11.   Names and addresses of Technical Services responsible for conducting approval tests, and of Type Approval Authorities

The Contracting Parties to the Agreement which apply this Regulation shall communicate to the United Nations Secretariat the names and addresses of the Technical Services responsible for conducting approval tests and of the Type Approval Authorities which grant approval and to which forms certifying approval or extension or refusal or withdrawal of approval, issued in other countries, are to be sent.

12.   Transitional provisions

| 12.1. | As from the official date of entry into force of the 01 series of amendments, no Contracting Party applying this Regulation shall refuse to grant or refuse to accept type approvals under this Regulation as amended by the 01 series of amendments. |
| --- | --- |

12.1.

As from the official date of entry into force of the 01 series of amendments, no Contracting Party applying this Regulation shall refuse to grant or refuse to accept type approvals under this Regulation as amended by the 01 series of amendments.

| 12.2. | As from 6 July 2022, for vehicle types of category M1 and as from 6 July 2024 for vehicle types of other categories than M1, Contracting Parties applying this Regulation shall not be obliged to accept type approvals to the preceding series of amendments, first issued after 6 July 2022. |
| --- | --- |

12.2.

As from 6 July 2022, for vehicle types of category M1

1

| 12.3. | Until 6 July 2022, for vehicle types of category M1 and until 6 July 2024 for vehicle types of other categories than M1, Contracting Parties applying this Regulation shall accept type approvals to the preceding series of amendments, first issued before 6 July 2022. |
| --- | --- |

12.3.

Until 6 July 2022, for vehicle types of category M1

1

| 12.4. | As from 6 July 2022, for vehicle types of category M1 and as from 6 July 2024 for vehicle types of other categories than M1, Contracting Parties applying this Regulation shall not be obliged to accept type approvals issued to the preceding series of amendments to this Regulation. |
| --- | --- |

12.4.

As from 6 July 2022, for vehicle types of category M1

1

| 12.5. | Notwithstanding the transitional provisions above, Contracting Parties who start to apply this Regulation after the date of entry into force of the most recent series of amendments are not obliged to accept type approvals which were granted in accordance with any of the preceding series of amendments to this Regulation/are only obliged to accept type approval granted in accordance with the 01 series of amendments. |
| --- | --- |

12.5.

Notwithstanding the transitional provisions above, Contracting Parties who start to apply this Regulation after the date of entry into force of the most recent series of amendments are not obliged to accept type approvals which were granted in accordance with any of the preceding series of amendments to this Regulation/are only obliged to accept type approval granted in accordance with the 01 series of amendments.

| 12.6. | Notwithstanding paragraph 12.4., Contracting Parties applying this Regulation shall continue to accept type approvals issued according to the preceding series of amendments to this Regulation, for the vehicles/vehicle systems which are not affected by the changes introduced by the 01 series of amendments. |
| --- | --- |

12.6.

Notwithstanding paragraph 12.4., Contracting Parties applying this Regulation shall continue to accept type approvals issued according to the preceding series of amendments to this Regulation, for the vehicles/vehicle systems which are not affected by the changes introduced by the 01 series of amendments.

| 12.7. | Contracting Parties applying this Regulation may grant type approvals according to any preceding series of amendments to this Regulation. (3) |
| --- | --- |

12.7.

Contracting Parties applying this Regulation may grant type approvals according to any preceding series of amendments to this Regulation. (3

| 12.8. | Contracting Parties applying this Regulation shall continue to grant extensions of existing approvals to any preceding series of amendments to this Regulation.3 |
| --- | --- |

12.8.

Contracting Parties applying this Regulation shall continue to grant extensions of existing approvals to any preceding series of amendments to this Regulation.3

---

(1)  As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document ECE/TRANS/WP.29/78/Rev.6, para. 2 – www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html

1

(2)  The distinguishing numbers of the Contracting Parties to the 1958 Agreement are reproduced in Annex 3 to the Consolidated Resolution on the Construction of Vehicles (R.E.3), document ECE/TRANS/WP.29/78/Rev.6, Annex 3 – www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html

2

.

(3)  Note by the secretariat: the wording was adjusted in line with the decision of WP.29 at its November 2020 session (ECE/TRANS/WP.29/1155, paras. 92 and 93, and informal document WP.29-182-11).

3

---

ANNEX 1

Communication

(maximum format: A4 (210 × 297 mm))

| (1) | Issued by: | Name of administration:
  ...
  ...
  ... |
| --- | --- | --- |

Image 1

Issued by:

Name of administration:

...

...

...

| concerning: (2) | Approval |
| --- | --- |
| | Approval extended |
| | Approval refused |
| | Approval withdrawn |
| | Production definitively discontinued |

concerning: (2)

Approval

Approval extended

Approval refused

Approval withdrawn

Production definitively discontinued

of a vehicle type with regard to its tyre pressure monitoring system pursuant to UN Regulation No 141.

| Approval No: ... | Extension No: ... |
| --- | --- |

Approval No: ...

Extension No: ...

| 1. | Trade name or mark of the vehicle:
  ... |
| --- | --- |

1.

...

| 2 | Vehicle type (if applicable, variants that are included):... |
| --- | --- |

2

| 3. | Manufacturer’s name and address:... |
| --- | --- |

3.

| 4. | If applicable, name and address of the manufacturer’s representative:
  ... |
| --- | --- |

4.

...

| 5. | Vehicle submitted for approval on:... |
| --- | --- |

5.

| 6. | Technical Service responsible for conducting approval tests:... |
| --- | --- |

6.

| 7. | Date of test report:... |
| --- | --- |

7.

| 8. | Number of test report:... |
| --- | --- |

8.

| 9. | Brief description of the vehicle type:... |
| --- | --- |

9.

| 9.1. | Mass of the vehicle when tested:
  Front axle:...
  Second axle:...
  Third axle:...
  Fourth axle:...
  Fifth axle:...
  Sixth axle:...
  etc.
  Total:... |
| --- | --- |

9.1.

Front axle:...

Second axle:...

Third axle:...

Fourth axle:...

Fifth axle:...

Sixth axle:...

etc.

Total:...

| 9.2. | Tyre Class, Marking and wheel size(s) of standard unit equipment:... |
| --- | --- |

9.2.

| 9.3. | Brief description of the tyre pressure monitoring system2/tyre pressure refill system2/central tyre inflation system2 including implemented measures to avoid inadvertent reset control operation according to paragraph 5.1.6., if applicable... |
| --- | --- |

9.3.

| 10. | Result of the tests: |
| --- | --- |

10.

| 10.1. | According to Annex 3 to this Regulation (TPMS), if applicable2: | Measured
  Time to warning
  (mm:ss) |
| --- | --- | --- |
| ‘Puncture test’ | |
| ‘Diffusion test’ | |
| ‘Malfunction test’ | |

10.1.

Measured

Time to warning

(mm:ss)

‘Puncture test’

‘Diffusion test’

‘Malfunction test’

| 10.2 | According to Annex 4 to this Regulation (TPRS/CTIS), if applicable2: | Start of refilling
  Time [s] | Refill Process completed
  Time [s] | Malfunction warning ON
  Time [s] |
| --- | --- | --- | --- | --- |
| ‘Refill functionality’ | | | |
| ‘Malfunction warning’ | | | |

10.2

Start of refilling

Time [s]

Refill Process completed

Time [s]

Malfunction warning ON

Time [s]

‘Refill functionality’

‘Malfunction warning’

| 11. | Position of approval mark:... |
| --- | --- |

11.

| 12. | Reason(s) of extension (if applicable):... |
| --- | --- |

12.

| 13. | Approval granted/refused/extended/withdrawn2... |
| --- | --- |

13.

| 14. | Place:... |
| --- | --- |

14.

| 15. | Date:... |
| --- | --- |

15.

| 16. | Signature:... |
| --- | --- |

16.

| 17. | The list of documents deposited with the Type Approval Authority which has granted approval is annexed to this communication and can be obtained upon request. |
| --- | --- |

17.

---

(1)  Distinguishing number of the country which has granted/extended/refused/withdrawn approval (see approval provisions in the regulation).

(2)  Strike out what does not apply.

---

ANNEX 2

Arrangements of approval marks

(See paragraph 4.4. of this Regulation)

Image 2

a = 8 mm min.

The above approval mark affixed to a vehicle shows that the vehicle type concerned has, with regard to the equipment of a tyre pressure monitoring system, been approved in the Netherlands (E 4), pursuant to UN Regulation No 141 under approval number 012439. The two digits of the approval number indicates that the approval was granted in accordance with the requirements of UN Regulation No 141 as amended by the 01 series of amendments.

---

ANNEX 3

Tests requirements for Tyre Pressure Monitoring Systems (TPMS)

| 1. | Test conditions |
| --- | --- |

1.

| 1.1. | General
  In the case that both TPRS and TPMS are fitted to a vehicle, when TPMS is tested according to the tests outlined in this Annex, then TPRS shall be deactivated before commencing tests of TPMS. TPRS shall remain deactivated during tests of TPMS and can be reactivated after TPMS tests have been completed.
  In the case that both CTIS and TPMS are fitted to a vehicle, when TPMS is tested according to the tests outlined in this Annex, then CTIS shall be deactivated before commencing tests of TPMS. CTIS shall remain deactivated during tests of TPMS and can be reactivated after TPMS tests have been completed. |
| --- | --- |

1.1.

In the case that both TPRS and TPMS are fitted to a vehicle, when TPMS is tested according to the tests outlined in this Annex, then TPRS shall be deactivated before commencing tests of TPMS. TPRS shall remain deactivated during tests of TPMS and can be reactivated after TPMS tests have been completed.

In the case that both CTIS and TPMS are fitted to a vehicle, when TPMS is tested according to the tests outlined in this Annex, then CTIS shall be deactivated before commencing tests of TPMS. CTIS shall remain deactivated during tests of TPMS and can be reactivated after TPMS tests have been completed.

| 1.2. | Ambient temperature.
  The ambient temperature shall be between 0 °C and 40 °C. |
| --- | --- |

1.2.

The ambient temperature shall be between 0 °C and 40 °C.

| 1.3. | Road test surface.
  The road shall have a surface affording good adhesion. The road surface shall be dry during testing. |
| --- | --- |

1.3.

The road shall have a surface affording good adhesion. The road surface shall be dry during testing.

| 1.4. | The tests shall be conducted in an environment free of interferences from radio wave. |
| --- | --- |

1.4.

| 1.5. | Vehicle conditions. |
| --- | --- |

1.5.

| 1.5.1. | Test weight.
  The vehicle may be tested at any condition of load, the distribution of the mass among the axles being that stated by the vehicle manufacturer without exceeding any of the maximum permissible mass for each axle.
  However, in the case where there is no possibility to set or reset the system, the vehicle shall be unladen. For vehicles of category M1 up to a maximum mass of 3 500 kg, M2, M3, N1, N2, and N3 there may be, in addition to the driver, a second person on the front seat (if fitted) who is responsible for noting the results of the tests.
  The load condition shall not be modified during the test. |
| --- | --- |

1.5.1.

The vehicle may be tested at any condition of load, the distribution of the mass among the axles being that stated by the vehicle manufacturer without exceeding any of the maximum permissible mass for each axle.

However, in the case where there is no possibility to set or reset the system, the vehicle shall be unladen. For vehicles of category M1 up to a maximum mass of 3 500 kg, M2, M3, N1, N2, and N3 there may be, in addition to the driver, a second person on the front seat (if fitted) who is responsible for noting the results of the tests.

The load condition shall not be modified during the test.

| 1.5.2. | Vehicle speed.
  The TPMS shall be calibrated and tested for vehicles of category M1 up to a maximum mass of 3 500 kg and N1:






  (a) | In a speed range from forty km/h and 120 km/h or the vehicle’s maximum design speed if it is less than 120 km/h for the puncture test to verify the requirements of paragraph 5.2 to this Regulation; and |
| --- | --- | --- |

1.5.2.

The TPMS shall be calibrated and tested for vehicles of category M1 up to a maximum mass of 3 500 kg and N1:

(a)

In a speed range from forty km/h and 120 km/h or the vehicle’s maximum design speed if it is less than 120 km/h for the puncture test to verify the requirements of paragraph 5.2 to this Regulation; and

| (b) | In a speed range from forty km/h and 100 km/h or the vehicle’s maximum design speed if it is less than 100 km/h for the diffusion test to verify the requirements of paragraph 5.3 to this Regulation and for the malfunction test to verify the requirements of paragraph 5.4 to this Regulation. |
| --- | --- |

(b)

In a speed range from forty km/h and 100 km/h or the vehicle’s maximum design speed if it is less than 100 km/h for the diffusion test to verify the requirements of paragraph 5.3 to this Regulation and for the malfunction test to verify the requirements of paragraph 5.4 to this Regulation.

The TPMS shall be calibrated and tested for vehicles of categories M2, M3, N2, N3, O3 and O4:

| (c) | In a speed range from 30 km/h and 90 km/h (or the vehicle’s maximum design speed if it is less than 90 km/h) for the puncture test to verify the requirements of paragraph 5.2 to this Regulation; and |
| --- | --- |

(c)

In a speed range from 30 km/h and 90 km/h (or the vehicle’s maximum design speed if it is less than 90 km/h) for the puncture test to verify the requirements of paragraph 5.2 to this Regulation; and

| (d) | In a speed range from 30 km/h and 90 km/h (or the vehicle’s maximum design speed if it is less than 90 km/h) for the diffusion test to verify the requirements of paragraph 5.3 to this Regulation and for the malfunction test to verify the requirements of paragraph 5.4 to this Regulation. |
| --- | --- |

(d)

In a speed range from 30 km/h and 90 km/h (or the vehicle’s maximum design speed if it is less than 90 km/h) for the diffusion test to verify the requirements of paragraph 5.3 to this Regulation and for the malfunction test to verify the requirements of paragraph 5.4 to this Regulation.

The whole speed range shall be covered during the test.

For vehicles equipped with cruise control, the cruise control shall not be engaged during testing.

| 1.5.3. | Rim position.
  The vehicle rims may be positioned at any wheel position, consistent with any related instructions or limitations from the vehicle’s manufacturer. |
| --- | --- |

1.5.3.

The vehicle rims may be positioned at any wheel position, consistent with any related instructions or limitations from the vehicle’s manufacturer.

| 1.5.4. | Stationary location.
  When the vehicle is parked, the vehicle’s tyres shall be shaded from direct sun. The location shall be shielded from any wind that may affect the results. |
| --- | --- |

1.5.4.

When the vehicle is parked, the vehicle’s tyres shall be shaded from direct sun. The location shall be shielded from any wind that may affect the results.

| 1.5.5. | Brake pedal application.
  Driving time shall not accumulate during service brake application while the vehicle is moving. |
| --- | --- |

1.5.5.

Driving time shall not accumulate during service brake application while the vehicle is moving.

| 1.5.6. | Tyres.
  The vehicle shall be tested with the tyres installed on the vehicle according to the vehicle manufacturer’s recommendation. However, the spare tyre may be utilised for testing TPMS malfunction. |
| --- | --- |

1.5.6.

The vehicle shall be tested with the tyres installed on the vehicle according to the vehicle manufacturer’s recommendation. However, the spare tyre may be utilised for testing TPMS malfunction.

| 1.5.7. | Lift axle(s)
  If the vehicle is equipped with lift axle(s), the lift axle(s) shall be fully lowered such that the tyres shall have contact with the ground during testing. |
| --- | --- |

1.5.7.

If the vehicle is equipped with lift axle(s), the lift axle(s) shall be fully lowered such that the tyres shall have contact with the ground during testing.

| 1.6. | Accuracy of pressure measurement equipment.
  Pressure measurement equipment to be used for the tests contained in this Annex shall be accurate to at least +/– 3 kPa. |
| --- | --- |

1.6.

Pressure measurement equipment to be used for the tests contained in this Annex shall be accurate to at least +/– 3 kPa.

| 2. | Test procedure
  The test shall be performed at a test speed within the range in accordance with paragraph 1.5.2 to this Annex, at least once for the test case according to paragraph 2.6.1 to this Annex (‘puncture test’), and at least once for each test case according to paragraph 2.6.2 to this Annex (‘diffusion test’). |
| --- | --- |

2.

The test shall be performed at a test speed within the range in accordance with paragraph 1.5.2 to this Annex, at least once for the test case according to paragraph 2.6.1 to this Annex (‘puncture test’), and at least once for each test case according to paragraph 2.6.2 to this Annex (‘diffusion test’).

| 2.1. | Before inflating the vehicle’s tyres, leave the vehicle stationary outside at ambient temperature with the engine off shaded from direct sunlight and not exposed to wind or other heating or chilling influences for at least 1 hour for vehicles of category M1 and N1 and at least 4 hours for vehicles of category M2, M3, N2, N3, O3 and O4. Inflate the vehicle’s tyres to the vehicle manufacturer’s recommended cold inflation pressure (Prec), in accordance with the vehicle manufacturer’s recommendation for the speed and load conditions, and tyre positions. All pressure measurements shall be carried out using the same test equipment. |
| --- | --- |

2.1.

| 2.2. | With the vehicle stationary and the ignition locking system in the ‘Lock’ or ‘Off’ position, activate the ignition locking system to the ‘On’ or ‘Run’ position. The tyre pressure monitoring system shall perform a check of lamp function for the low tyre pressure tell-tale as specified in paragraph 5.5.2 of this Regulation. This last requirement does not apply to tell-tales shown in a common space. |
| --- | --- |

2.2.

| 2.3. | If applicable, set or reset the tyre pressure monitoring system in accordance with the vehicle manufacturer’s recommendations and verify in particular the measures avoiding inadvertent reset control operation according to paragraph 5.1.6. |
| --- | --- |

2.3.

| 2.4. | Learning/Tyre warming phase. |
| --- | --- |

2.4.

| 2.4.1. | For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, drive the vehicle for a minimum of 20 minutes within the speed range in paragraph 1.5.2 to this Annex, and with an average speed of 80 km/h (±10 km/h). It is allowed to be outside the speed range for a maximum cumulative time of 2 minutes during this phase.
  For vehicles of category M2, M3, N2, N3, O3 and O4, drive the vehicle for a minimum of 120 minutes within the speed range in paragraph 1.5.2 to this Annex, and with an average speed of 60 km/h (±10 km/h). It is allowed to be outside the speed range for a maximum cumulative time of 2 minutes during this phase. |
| --- | --- |

2.4.1.

For vehicles of category M2, M3, N2, N3, O3 and O4, drive the vehicle for a minimum of 120 minutes within the speed range in paragraph 1.5.2 to this Annex, and with an average speed of 60 km/h (±10 km/h). It is allowed to be outside the speed range for a maximum cumulative time of 2 minutes during this phase.

| 2.4.2. | At the discretion of the Technical Service, where the driving test is undertaken on a track (circle/oval) with only turns in a single direction, then the driving test in paragraph 2.4.1 above should be equally split (+/– 2 minutes) in both directions. |
| --- | --- |

2.4.2.

| 2.4.3. | Within the 5 minutes of completing the learning phase, measure the warm pressure of the tyre(s) to be deflated. The warm pressure shall be taken as the value Pwarm. This value will be used for subsequent operations. |
| --- | --- |

2.4.3.

| 2.5. | Deflation phase. |
| --- | --- |

2.5.

| 2.5.1. | Procedure for the puncture test to verify the requirements of paragraph 5.2 to this Regulation.
  Following the requirements specified in 5.1.5, deflate one of the vehicle’s tyres within 5 minutes of measuring the warm pressure as described in paragraph 2.4.3 above, until it is at Pwarm – 20 per cent, or it is at a minimum pressure:






  (a) | of 150 kPa for vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of tyre class C1;
  or |
| --- | --- | --- |

2.5.1.

Following the requirements specified in 5.1.5, deflate one of the vehicle’s tyres within 5 minutes of measuring the warm pressure as described in paragraph 2.4.3 above, until it is at Pwarm – 20 per cent, or it is at a minimum pressure:

(a)

of 150 kPa for vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of tyre class C1;

or

| (b) | of 220 kPa for vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of tyre class C2,
  whichever is higher, namely Ptest. Following a stabilisation period of between 2 and 5 minutes the pressure Ptest shall be rechecked and adjusted if necessary. |
| --- | --- |

(b)

of 220 kPa for vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of tyre class C2,

whichever is higher, namely Ptest. Following a stabilisation period of between 2 and 5 minutes the pressure Ptest shall be rechecked and adjusted if necessary.

| 2.5.2. | Procedure for the diffusion test to verify the requirements of paragraph 5.3 to this Regulation.
  For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of tyre class C1 deflate all tyres within 5 minutes of measuring the warm pressure as described in paragraph 2.4.3 above, until the deflated tyres are at Pwarm – 20 per cent plus a further deflation of 7 kPa, namely Ptest or it is at a minimum pressure of 150 kPa. Following a stabilisation period of between 2 and 5 minutes the pressure Ptest shall be rechecked and adjusted if necessary.
  For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of tyre class C2 deflate all tyres within 5 minutes of measuring the warm pressure as described in paragraph 2.4.3 above, until the deflated tyres are at Pwarm – 20 per cent plus a further deflation of 7 kPa, namely Ptest or it is at a minimum pressure of 220 kPa. Following a stabilisation period of between 2 and 5 minutes the pressure Ptest shall be rechecked and adjusted if necessary.
  For vehicles of category M2, M3, N2, N3, O3 and O4 deflate all tyres within 15 minutes of measuring the warm pressure as described in paragraph 2.4.3 above, until the deflated tyres are at Pwarm – 20 per cent plus a further deflation of 7 kPa, namely Ptest. Following a stabilisation period of between 5 and 10 minutes the pressure Ptest shall be rechecked and adjusted if necessary. |
| --- | --- |

2.5.2.

For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of tyre class C1 deflate all tyres within 5 minutes of measuring the warm pressure as described in paragraph 2.4.3 above, until the deflated tyres are at Pwarm – 20 per cent plus a further deflation of 7 kPa, namely Ptest or it is at a minimum pressure of 150 kPa. Following a stabilisation period of between 2 and 5 minutes the pressure Ptest shall be rechecked and adjusted if necessary.

For vehicles of category M1 up to a maximum mass of 3 500 kg and N1, fitted with tyres of tyre class C2 deflate all tyres within 5 minutes of measuring the warm pressure as described in paragraph 2.4.3 above, until the deflated tyres are at Pwarm – 20 per cent plus a further deflation of 7 kPa, namely Ptest or it is at a minimum pressure of 220 kPa. Following a stabilisation period of between 2 and 5 minutes the pressure Ptest shall be rechecked and adjusted if necessary.

For vehicles of category M2, M3, N2, N3, O3 and O4 deflate all tyres within 15 minutes of measuring the warm pressure as described in paragraph 2.4.3 above, until the deflated tyres are at Pwarm – 20 per cent plus a further deflation of 7 kPa, namely Ptest. Following a stabilisation period of between 5 and 10 minutes the pressure Ptest shall be rechecked and adjusted if necessary.

| 2.6. | Low tyre pressure detection phase. |
| --- | --- |

2.6.

| 2.6.1. | Procedure for the puncture test to verify the requirements of paragraph 5.2 to this Regulation. |
| --- | --- |

2.6.1.

| 2.6.1.1. | Drive the vehicle along any portion of the test course (not necessarily continuously). The sum of the total cumulative drive time shall be the lesser of 10 minutes or the time at which the low tyre pressure tell-tale illuminates. |
| --- | --- |

2.6.1.1.

| 2.6.2. | Procedure for the diffusion test to verify the requirements of paragraph 5.3 to this Regulation. |
| --- | --- |

2.6.2.

| 2.6.2.1. | Drive the vehicle along any portion of the test course. After not less than twenty (20) minutes and not more than forty (40) minutes bring the vehicle to a complete standstill with the engine switched off and the ignition key removed for not less than one (1) minute or more than three (3) minutes. Resume the test. The sum of the total cumulative drive time shall be the lesser of sixty (60) minutes of cumulative driving under the conditions set out in paragraph 1.5.2 above or the time at which the low tyre pressure tell-tale illuminates. |
| --- | --- |

2.6.2.1.

| 2.6.3. | If the low tyre pressure signal did not illuminate, discontinue the test. |
| --- | --- |

2.6.3.

| 2.7. | Low pressure tell-tale illumination |
| --- | --- |

2.7.

| 2.7.1. | For vehicles of category M1 up to a maximum mass of 3 500 kg and N1

  If the low tyre pressure tell-tale illuminated during the procedure in paragraph 2.6 above, deactivate the ignition locking system to the ‘Off’ or ‘Lock’ position. After a 5 minutes period, reactivate the vehicle’s ignition locking system to the ‘On’ (‘Run’) position. The tell-tale must illuminate and remain illuminated as long as the ignition locking system is in the ‘On’ (‘Run’) position. |
| --- | --- |

2.7.1.

If the low tyre pressure tell-tale illuminated during the procedure in paragraph 2.6 above, deactivate the ignition locking system to the ‘Off’ or ‘Lock’ position. After a 5 minutes period, reactivate the vehicle’s ignition locking system to the ‘On’ (‘Run’) position. The tell-tale must illuminate and remain illuminated as long as the ignition locking system is in the ‘On’ (‘Run’) position.

| 2.7.2. | For vehicles of category M2, M3, N2, N3, O3 and O4

  If the low tyre pressure tell-tale illuminated during the procedure in paragraph 2.6 above, deactivate the ignition locking system to the ‘Off’ or ‘Lock’ position. After a 5 minutes period, reactivate the vehicle’s ignition locking system to the ‘On’ (‘Run’) position. The tell-tale must illuminate within 10 minutes and remain illuminated as long as the ignition locking system is in the ‘On’ (‘Run’) position. |
| --- | --- |

2.7.2.

If the low tyre pressure tell-tale illuminated during the procedure in paragraph 2.6 above, deactivate the ignition locking system to the ‘Off’ or ‘Lock’ position. After a 5 minutes period, reactivate the vehicle’s ignition locking system to the ‘On’ (‘Run’) position. The tell-tale must illuminate within 10 minutes and remain illuminated as long as the ignition locking system is in the ‘On’ (‘Run’) position.

| 2.8. | Inflate all of the vehicle’s tyres to the vehicle manufacturer’s recommended cold inflation pressure. Reset the system in accordance with the instructions of the vehicle manufacturer. Determine whether the tell-tale has extinguished. If necessary, drive the vehicle until the tell-tale has been extinguished. If the tell-tale does not extinguish, discontinue the test. |
| --- | --- |

2.8.

| 2.9. | Repetition of the deflation phase.
  The test may be repeated, at the same or different loads, using the relevant test procedures in paragraphs 2.1 to 2.8 above, with the relevant tyre(s) on the vehicle under-inflated, in accordance with the provisions of paragraph 5.2 or 5.3 to this Regulation, whichever is relevant. |
| --- | --- |

2.9.

The test may be repeated, at the same or different loads, using the relevant test procedures in paragraphs 2.1 to 2.8 above, with the relevant tyre(s) on the vehicle under-inflated, in accordance with the provisions of paragraph 5.2 or 5.3 to this Regulation, whichever is relevant.

| 3. | TPMS malfunction detection |
| --- | --- |

3.

| 3.1. | Simulate a TPMS malfunction, for example, by disconnecting the power source to any TPMS component, disconnecting any electrical connection between TPMS components, or installing a tyre or wheel on the vehicle that is incompatible with the TPMS. When simulating a TPMS malfunction, the electrical connections for the tell-tale lamps shall not be disconnected. |
| --- | --- |

3.1.

| 3.2. | Drive the vehicle for up to 10 minutes of cumulative time (not necessarily continuously) along any portion of the test course. |
| --- | --- |

3.2.

| 3.3. | The sum of the total cumulative drive time under paragraph 3.2 shall be the lesser of 10 minutes or the time at which the TPMS malfunction tell-tale illuminates. |
| --- | --- |

3.3.

| 3.4. | If the TPMS malfunction indicator did not illuminate in accordance with paragraph 5.4 to this Regulation, as required, discontinue the test. |
| --- | --- |

3.4.

| 3.5. | For vehicles of category M1 up to a maximum mass of 3 500 kg and N1

  If the TPMS malfunction indicator is illuminated or illuminates during the procedure in paragraphs 3.1 to 3.3 above, deactivate the ignition locking system to the ‘Off’ or ‘Lock’ position. After 5 minutes, reactivate the vehicle’s ignition locking system to the ‘On’ (‘Run’) position. The TPMS malfunction indicator shall again signal a malfunction and remain illuminated as long as the ignition locking system is in the ‘On’ (‘Run’) position. |
| --- | --- |

3.5.

If the TPMS malfunction indicator is illuminated or illuminates during the procedure in paragraphs 3.1 to 3.3 above, deactivate the ignition locking system to the ‘Off’ or ‘Lock’ position. After 5 minutes, reactivate the vehicle’s ignition locking system to the ‘On’ (‘Run’) position. The TPMS malfunction indicator shall again signal a malfunction and remain illuminated as long as the ignition locking system is in the ‘On’ (‘Run’) position.

| 3.6. | For vehicles of category M2, M3, N2, N3, O3 and O4

  If the TPMS malfunction indicator is illuminated or illuminates during the procedure in paragraphs 3.1 to 3.3 above, deactivate the ignition locking system to the ‘Off’ or ‘Lock’ position. After 5 minutes, reactivate the vehicle’s ignition locking system to the ‘On’ (‘Run’) position. The TPMS malfunction indicator shall again signal a malfunction within 10 minutes and remain illuminated as long as the ignition locking system is in the ‘On’ (‘Run’) position. |
| --- | --- |

3.6.

If the TPMS malfunction indicator is illuminated or illuminates during the procedure in paragraphs 3.1 to 3.3 above, deactivate the ignition locking system to the ‘Off’ or ‘Lock’ position. After 5 minutes, reactivate the vehicle’s ignition locking system to the ‘On’ (‘Run’) position. The TPMS malfunction indicator shall again signal a malfunction within 10 minutes and remain illuminated as long as the ignition locking system is in the ‘On’ (‘Run’) position.

| 3.7. | Restore the TPMS to normal operation. If necessary, drive the vehicle until the warning signal has extinguished. If the warning lamp has not extinguished, discontinue the test. |
| --- | --- |

3.7.

| 3.8. | The test may be repeated using the test procedures in paragraphs 3.1 to 3.6 above, with each such test limited to simulation of a single malfunction. |
| --- | --- |

3.8.

---

ANNEX 4

Test requirements for Tyre Pressure Refilling Systems (TPRS) and for Central Tyre Inflation System (CTIS)

| 1. | Test conditions |
| --- | --- |

1.

| 1.1. | Ambient temperature.
  The ambient temperature shall be between 0 °C and 40 °C. |
| --- | --- |

1.1.

The ambient temperature shall be between 0 °C and 40 °C.

| 1.2. | Road test surface
  Testing shall be performed on even ground. |
| --- | --- |

1.2.

Testing shall be performed on even ground.

| 1.3. | Vehicle condition |
| --- | --- |

1.3.

| 1.3.1. | Test weight
  Any weight condition the vehicle is legally approved for. |
| --- | --- |

1.3.1.

Any weight condition the vehicle is legally approved for.

| 1.3.2. | Driving situation
  Tests are performed with the vehicle in standstill.
  In case of vehicles of category O3 and O4, electric and pneumatic supply shall be provided. |
| --- | --- |

1.3.2.

Tests are performed with the vehicle in standstill.

In case of vehicles of category O3 and O4, electric and pneumatic supply shall be provided.

| 1.3.3. | Stationary location
  When the vehicle is parked, the vehicle’s tyres shall be shaded from direct sun. |
| --- | --- |

1.3.3.

When the vehicle is parked, the vehicle’s tyres shall be shaded from direct sun.

| 1.4. | Tyres
  The vehicle shall be tested with the tyres on the vehicle according to the vehicle manufacturer’s recommendation. |
| --- | --- |

1.4.

The vehicle shall be tested with the tyres on the vehicle according to the vehicle manufacturer’s recommendation.

| 1.5. | Accuracy of pressure measurement equipment
  Pressure measurement equipment to be used for the tests contained in this Annex shall be accurate to at least +/– 10 kPa.
  All pressure measurements shall be carried out using the same test equipment. |
| --- | --- |

1.5.

Pressure measurement equipment to be used for the tests contained in this Annex shall be accurate to at least +/– 10 kPa.

All pressure measurements shall be carried out using the same test equipment.

| 2. | Test procedure |
| --- | --- |

2.

| 2.1. | Vehicle conditioning
  The pressure reservoir (mounted infrastructure) has to be filled according to UN Regulation No 13, Series 11, Supplement 16, reservoir pressure limits. Prior to the testing, it has to be ensured that each vehicle wheel has rotated at least ten times. Leave the vehicle stationary outside at ambient temperature with the engine off shaded from direct sunlight and not exposed to wind or other heating or chilling influences for at least 1 hour. |
| --- | --- |

2.1.

The pressure reservoir (mounted infrastructure) has to be filled according to UN Regulation No 13, Series 11, Supplement 16, reservoir pressure limits. Prior to the testing, it has to be ensured that each vehicle wheel has rotated at least ten times. Leave the vehicle stationary outside at ambient temperature with the engine off shaded from direct sunlight and not exposed to wind or other heating or chilling influences for at least 1 hour.

| 2.2. | Check the systems refill functionality
  Inflate the vehicle’s tyres to the vehicle manufacturer’s recommended cold inflation pressure (Prec).
  Deflate the tyre pressure of one tyre by 20% but not more than 50 kPa below the manufacturers recommended cold inflation pressure (Prec). |
| --- | --- |

2.2.

Inflate the vehicle’s tyres to the vehicle manufacturer’s recommended cold inflation pressure (Prec).

Deflate the tyre pressure of one tyre by 20% but not more than 50 kPa below the manufacturers recommended cold inflation pressure (Prec).

| 2.2.1. | Check refilling according to Figure 1
  Check that within 2 minutes the TPRS/CTIS starts refilling and the optical signal for refilling as described by the manufacturer is ON.
  Refill process shall be completed within 8 min after the refill process has started and the optical signal for refilling as described by the manufacturer shall be OFF as soon as the refilling process is completed.
  After the refilling process has been completed, check that the tyre pressure is in a range of +/– 5% of manufacturers recommended cold inflation pressure Prec.




  Figure 1 Refilling check |
| --- | --- |

2.2.1.

Check that within 2 minutes the TPRS/CTIS starts refilling and the optical signal for refilling as described by the manufacturer is ON.

Refill process shall be completed within 8 min after the refill process has started and the optical signal for refilling as described by the manufacturer shall be OFF as soon as the refilling process is completed.

After the refilling process has been completed, check that the tyre pressure is in a range of +/– 5% of manufacturers recommended cold inflation pressure Prec.

Image 3

  Figure 1 Refilling check

| 2.3. | Check system malfunction warning functionality according to Figure 2.
  Inflate the vehicle’s tyres to the vehicle manufacturer’s recommended cold inflation pressure (Prec).
  Constantly deflate the system or the pressure of one tyre by 20% but not more than 50 kPa below the manufacturers recommended cold inflation pressure (Prec).
  Within 2 minutes the system shall start refilling and the optical signal as described by the manufacturer for refilling is be ON
  Within 8 minutes after the start of the refilling the optical signal for malfunction as described by the manufacturer shall be ON.




  Figure 2 Checking system malfunction warning functionality |
| --- | --- |

2.3.

Inflate the vehicle’s tyres to the vehicle manufacturer’s recommended cold inflation pressure (Prec).

Constantly deflate the system or the pressure of one tyre by 20% but not more than 50 kPa below the manufacturers recommended cold inflation pressure (Prec).

Within 2 minutes the system shall start refilling and the optical signal as described by the manufacturer for refilling is be ON

Within 8 minutes after the start of the refilling the optical signal for malfunction as described by the manufacturer shall be ON.

Image 4

  Figure 2 Checking system malfunction warning functionality

---

ANNEX 5

Compatibility between towing vehicles and towed vehicles with respect to ISO 11992 data communication

A.   TPMS data communication between towing vehicle and towed vehicle(s)

| 1. | General |
| --- | --- |

1.

| 1.1. | The requirements of Part A of this Annex shall only apply to towing vehicles and towed vehicles equipped with a communication interface as described in paragraph 5.6.1.1 of this Regulation. |
| --- | --- |

1.1.

| 1.2. | This Annex defines requirements applicable to the towing vehicle and towed vehicle with respect to the support of messages defined within ISO 11992-2:2014 |
| --- | --- |

1.2.

| 2. | The parameters defined within ISO 11992-2:2014 that are transmitted by the communication interface shall be supported as follows: |
| --- | --- |

2.

| 2.1. | The following functions and associated messages are those that shall be supported by the towing vehicle or towed vehicle as appropriate: |
| --- | --- |

2.1.

| 2.1.1. | Messages transmitted from the towing vehicle to the towed vehicle, if supported:






  Function/Parameter | ISO 11992-2: 2014 reference |
| --- | --- | --- |
| Reverse gear status | EBS12
  Byte 2 Bit 5-6 |
| Braking system wheel-based vehicle speed | EBS12
  Byte 7-8 |
| Time/Date – Seconds | TD11 Byte 1 |
| Time/Date – Minutes | TD11 Byte 2 |
| Time/Date – Hours | TD11 Byte 3 |
| Time/Date – Months | TD11 Byte 4 |
| Time/Date – Day | TD11 Byte 5 |
| Time/Date – Year | TD11 Byte 6 |
| Time/Date – Local minute offset | TD11 Byte 7 |
| Time/Date – Local hour offset | TD11 Byte 8 |
| Identification data index | RGE12 Byte 5 |
| Identification data content | RGE12 Byte 6 |

2.1.1.

Function/Parameter

ISO 11992-2: 2014 reference

Reverse gear status

EBS12

Byte 2 Bit 5-6

Braking system wheel-based vehicle speed

EBS12

Byte 7-8

Time/Date – Seconds

TD11 Byte 1

Time/Date – Minutes

TD11 Byte 2

Time/Date – Hours

TD11 Byte 3

Time/Date – Months

TD11 Byte 4

Time/Date – Day

TD11 Byte 5

Time/Date – Year

TD11 Byte 6

Time/Date – Local minute offset

TD11 Byte 7

Time/Date – Local hour offset

TD11 Byte 8

Identification data index

RGE12 Byte 5

Identification data content

RGE12 Byte 6

| Note: | Regarding the definition of the parameters of the TD11 message, there is a known inconsistency between the SAE J1939 and ISO 11992 standards. For the purposes of compliance to this Regulation, the TD11 message definition provided in the ISO 11992-2:2014 shall be used. |
| --- | --- |

Note:

| 2.1.2. | Mandatory messages transmitted from the towed vehicle to the towing vehicle:







  Function/Parameter | ISO 11992-2:2014 reference | Reference to paragraphs in this UN Regulation |
| --- | --- | --- | --- |
| Tyre Pressure Status | EBS23
  Byte 1 Bit 1-2 | Paragraph 5.2.4.
  Paragraph 5.3.5.
  Paragraph 5.4.3. |
| Tyre/wheel identification (pressure) | EBS23 Byte 2 | Paragraph 5.2.4.
  Paragraph 5.3.5.
  Paragraph 5.4.3. |

2.1.2.

Function/Parameter

ISO 11992-2:2014 reference

Reference to paragraphs in this UN Regulation

Tyre Pressure Status

EBS23

Byte 1 Bit 1-2

Paragraph 5.2.4.

Paragraph 5.3.5.

Paragraph 5.4.3.

Tyre/wheel identification (pressure)

EBS23 Byte 2

Paragraph 5.2.4.

Paragraph 5.3.5.

Paragraph 5.4.3.

| 2.1.3. | Messages transmitted from the towed vehicle to the towing vehicle, if supported:






  Function/Parameter | ISO 11992-2:2014 reference |
| --- | --- | --- |
| Tyre/wheel identification (for EBS23 pressure) | EBS23 Byte 2 |
| Tyre pressure | EBS23 Byte 5 |
| Tyre/wheel identification
  (for RGE23) | RGE23 Byte 1 |
| Tyre temperature | RGE23 Byte 2-3 |
| Air leakage detection | RGE23 Byte 4-5 |
| Tyre pressure threshold detection | RGE23
  Byte 6 Bit 1-3 |
| Tyre module power supply status | RGE23
  Byte 6 Bit 4-5 |
| Identification data index | RGE23 Byte 7 |
| Identification data content | RGE23 Byte 8 |

2.1.3.

Function/Parameter

ISO 11992-2:2014 reference

Tyre/wheel identification (for EBS23 pressure)

EBS23 Byte 2

Tyre pressure

EBS23 Byte 5

Tyre/wheel identification

(for RGE23)

RGE23 Byte 1

Tyre temperature

RGE23 Byte 2-3

Air leakage detection

RGE23 Byte 4-5

Tyre pressure threshold detection

RGE23

Byte 6 Bit 1-3

Tyre module power supply status

RGE23

Byte 6 Bit 4-5

Identification data index

RGE23 Byte 7

Identification data content

RGE23 Byte 8

| 2.1.4. | The towed vehicle ECU transmitting the EBS23 and RGE23 messages shall assemble the EBS23 and RGE23 messages from TPMS content received from the ECU providing TPMS functionality and data from other sources.
  Signals, other than Tyre Pressure Status (EBS23 Byte 1 Bit 1-2), within messages EBS23 and RGE23 shall be transmitted with the indication ‘not available’ in case the ECU providing TPMS functionality does not provide such data. |
| --- | --- |

2.1.4.

Signals, other than Tyre Pressure Status (EBS23 Byte 1 Bit 1-2), within messages EBS23 and RGE23 shall be transmitted with the indication ‘not available’ in case the ECU providing TPMS functionality does not provide such data.

| 2.2. | When the towed vehicle transmits the following messages, the towing vehicle shall provide a low tyre pressure warning to the driver:







  Function/Parameter | ISO 11992-2:2014 reference | Driver warning required |
| --- | --- | --- | --- |
| Tyre Pressure Status

  (For Low Tyre Pressure Warning Indication) | EBS23 Byte 1
  Bit 1-2
  (002 — tyre pressure insufficient) | References to paragraph 5.2.3, 5.2.4, 5.3.4, 5.3.5 and 5.5.2 in this UN Regulation |
| Tyre/wheel identification (corresponding to Tyre Pressure Status) | EBS23 Byte 2
  (XXXXXXXX2 — actual Tyre/Wheel ID)
  OR
  (000000002 —  Tyre/Wheel ID not defined or wheel not defined and axle > 1510)
  OR
  (111111112 —  Tyre/Wheel ID not available or wheel = 1510 and axle = 1510) | References to paragraph 5.2.3, 5.2.4, 5.3.4, 5.3.5 and 5.5.2 in this UN Regulation |

2.2.

Function/Parameter

ISO 11992-2:2014 reference

Driver warning required

Tyre Pressure Status

(For Low Tyre Pressure Warning Indication)

EBS23 Byte 1

Bit 1-2

(002 — tyre pressure insufficient)

References to paragraph 5.2.3, 5.2.4, 5.3.4, 5.3.5 and 5.5.2 in this UN Regulation

Tyre/wheel identification (corresponding to Tyre Pressure Status)

EBS23 Byte 2

(XXXXXXXX2 — actual Tyre/Wheel ID)

OR

(000000002 —  Tyre/Wheel ID not defined or wheel not defined and axle > 1510)

OR

(111111112 —  Tyre/Wheel ID not available or wheel = 1510 and axle = 1510)

References to paragraph 5.2.3, 5.2.4, 5.3.4, 5.3.5 and 5.5.2 in this UN Regulation

| 2.3. | When the towed vehicle transmits the following messages, the towing vehicle shall provide a TPMS malfunction indication to the driver:







  Function/Parameter | ISO 11992-2:2014 reference | Driver warning required |
| --- | --- | --- | --- |
| Tyre Pressure Status

  (For TPMS Malfunction Indication) | EBS23 Byte 1
  Bit 1-2
  (102 — error indicator) | Reference to paragraph 5.4.1, 5.4.2 and 5.5.2 in this UN Regulation |
| Tyre/wheel identification (corresponding to Tyre Pressure Status) | EBS23 Byte 2
  XXXXXXXX2 — actual Tyre/Wheel ID)
  OR
  (000000002 —  Tyre/Wheel ID not defined or wheel not defined and axle > 1510)
  OR
  (111111112 —  Tyre/Wheel ID not available or wheel = 1510 and axle = 1510) | Reference to paragraph 5.4.1, 5.4.2 and 5.5.2 in this UN Regulation |

2.3.

Function/Parameter

ISO 11992-2:2014 reference

Driver warning required

Tyre Pressure Status

(For TPMS Malfunction Indication)

EBS23 Byte 1

Bit 1-2

(102 — error indicator)

Reference to paragraph 5.4.1, 5.4.2 and 5.5.2 in this UN Regulation

Tyre/wheel identification (corresponding to Tyre Pressure Status)

EBS23 Byte 2

XXXXXXXX2 — actual Tyre/Wheel ID)

OR

(000000002 —  Tyre/Wheel ID not defined or wheel not defined and axle > 1510)

OR

(111111112 —  Tyre/Wheel ID not available or wheel = 1510 and axle = 1510)

Reference to paragraph 5.4.1, 5.4.2 and 5.5.2 in this UN Regulation

| 2.3.1. | The towed vehicle shall transmit a Tyre Pressure Status value of ‘error indicator’ within 10 minutes of cumulative driving (in accordance with paragraph 5.4.1. of this Regulation) for any scenario where a valid Tyre Pressure Status (i.e. tyre pressure sufficient or insufficient) cannot be transmitted.
  Note that before towed vehicles needed to comply with this Regulation, some of them transmitted Tyre Pressure Status ‘not available’ for some of these scenarios, including when the towed vehicle had no function to perform tyre pressure monitoring. Towed vehicles that are required to comply with this Regulation going forward shall instead transmit ‘error indicator’ for these scenarios.
  Note that the towing vehicle would not be required to display a towed vehicle TPMS malfunction indication in the case that valid towed vehicle TPMS information is available on an alternative communication interface. |
| --- | --- |

2.3.1.

Note that before towed vehicles needed to comply with this Regulation, some of them transmitted Tyre Pressure Status ‘not available’ for some of these scenarios, including when the towed vehicle had no function to perform tyre pressure monitoring. Towed vehicles that are required to comply with this Regulation going forward shall instead transmit ‘error indicator’ for these scenarios.

Note that the towing vehicle would not be required to display a towed vehicle TPMS malfunction indication in the case that valid towed vehicle TPMS information is available on an alternative communication interface.

| 2.4. | When a permanent failure is detected in the communication line, the towing vehicle shall illuminate the towed vehicle TPMS malfunction indication signal.
  Note that the towing vehicle would not be required to display a towed vehicle TPMS malfunction indication in the case that valid towed vehicle TPMS information is available on an alternative communication interface. |
| --- | --- |

2.4.

Note that the towing vehicle would not be required to display a towed vehicle TPMS malfunction indication in the case that valid towed vehicle TPMS information is available on an alternative communication interface.

| 2.5. | When a valid Tyre Pressure Status is temporarily not available (i.e. unavailable for less than 10 minutes of cumulative drive time), the towed vehicle shall transmit the following messages:







  Function/Parameter | ISO 11992-2:2014 reference | Driver warning required |
| --- | --- | --- | --- |
| Tyre Pressure Status

  (TPMS data temporarily unavailable) | EBS23 Byte 1
  Bit 1-2
  (112 — not available) | Not applicable |
| Tyre/wheel identification (corresponding to Tyre Pressure Status) | EBS23 Byte 2
  XXXXXXXX2 — actual Tyre/Wheel ID)
  OR
  (000000002 —  Tyre/Wheel ID not defined or wheel not defined and axle > 1510)
  OR
  (111111112 —  Tyre/Wheel ID not available or wheel = 1510 and axle = 1510) | Not applicable |

2.5.

Function/Parameter

ISO 11992-2:2014 reference

Driver warning required

Tyre Pressure Status

(TPMS data temporarily unavailable)

EBS23 Byte 1

Bit 1-2

(112 — not available)

Not applicable

Tyre/wheel identification (corresponding to Tyre Pressure Status)

EBS23 Byte 2

XXXXXXXX2 — actual Tyre/Wheel ID)

OR

(000000002 —  Tyre/Wheel ID not defined or wheel not defined and axle > 1510)

OR

(111111112 —  Tyre/Wheel ID not available or wheel = 1510 and axle = 1510)

Not applicable

| Note: | paragraph 2.3.1 of part A of this Annex specifies required transmitted values when valid Tyre Pressure Status is unavailable for any longer duration. |
| --- | --- |

Note:

| 2.6. | The support of all other messages defined within ISO 11992-2:2014 is optional for the towing vehicle and towed vehicle, unless required by other Regulations. |
| --- | --- |

2.6.

B.   Data communication between (i) a towed vehicle ECU constituting part of a point-to-point link with the towing vehicle (towed vehicle gateway ECU) and (ii) a towed vehicle ECU providing TPMS functionality

| 1. | General |
| --- | --- |

1.

| 1.1. | The requirements of Part B of this Annex shall only apply to towed vehicles with a communication interface as described in paragraph 5.6.1.2 of this Regulation. |
| --- | --- |

1.1.

| 1.2. | This Annex defines requirements applicable to the towed vehicle gateway ECU and the ECU providing TPMS functionality with respect to the provision of a standard ISO 11898:2015 interface and the support of messages defined within ISO 11992-2:2014. |
| --- | --- |

1.2.

| 2. | The towed vehicle gateway ECU that is part of the point-to-point link shall provide an interface with the ECU providing TPMS functionality complying with data link layer and physical layer in accordance with ISO 11898-1:2015 and ISO 11898-2:2016. |
| --- | --- |

2.

| 2.1. | The CAN bit-rate for the ISO 11898-1:2015 interface shall be 250 kbit/s. |
| --- | --- |

2.1.

| 2.2. | The ISO 11898-2:2015 bus termination shall be configured on the vehicle in accordance with the guidelines of the vehicle manufacturer for the given installation. |
| --- | --- |

2.2.

| 2.3. | A power connection shall be made available to the towed vehicle ECU providing TPMS functionality in accordance with the vehicle manufacturer. |
| --- | --- |

2.3.

| 2.4. | The towed vehicle gateway ECU shall transmit, towards the towed vehicle ECU providing TPMS functionality, all messages and signals required to realise a reliable TPMS function. |
| --- | --- |

2.4.

| 3. | The parameters that are transmitted by the ISO 11898-1:2015 communication interface shall be as defined within ISO 11992-2:2014 and shall be supported as follows: |
| --- | --- |

3.

| 3.1. | The following functions and associated messages are those that shall be supported by the towed vehicle gateway ECU or towed vehicle ECU providing TPMS functionality as appropriate: |
| --- | --- |

3.1.

| 3.1.1. | Messages transmitted, if supported, from the towed vehicle gateway ECU to the towed vehicle ECU providing TPMS functionality:







  Function/Parameter | ISO 11992-2:2014 reference | Reference to paragraphs in this UN Regulation |
| --- | --- | --- | --- |
| Reverse gear status (towing vehicle) | EBS12
  Byte 2 Bit 5-6 | Paragraph 5.6.1.2. |
| Braking system wheel-based vehicle speed (towing vehicle) | EBS12
  Byte 7-8 | Paragraph 5.6.1.2. |
| Identification data index
  (towing vehicle) | RGE12 Byte 5 | Paragraph 5.6.1.2. |
| Identification data content
  (towing vehicle) | RGE12 Byte 6 | Paragraph 5.6.1.2. |
| Time/Date – Seconds (towing vehicle) | TD11 Byte 1 | Paragraph 5.6.1.2. |
| Time/Date – Minutes (towing vehicle) | TD11 Byte 2 | Paragraph 5.6.1.2. |
| Time/Date – Hours (towing vehicle) | TD11 Byte 3 | Paragraph 5.6.1.2. |
| Time/Date – Months (towing vehicle) | TD11 Byte 4 | Paragraph 5.6.1.2. |
| Time/Date – Day (towing vehicle) | TD11 Byte 5 | Paragraph 5.6.1.2. |
| Time/Date – Year (towing vehicle) | TD11 Byte 6 | Paragraph 5.6.1.2. |
| Time/Date – Local minute offset (towing vehicle) | TD11 Byte 7 | Paragraph 5.6.1.2. |
| Time/Date – Local hour offset (towing vehicle) | TD11 Byte 8 | Paragraph 5.6.1.2. |
| Braking system wheel-based vehicle speed (towed vehicle) | EBS21
  Byte 3-4 | Paragraph 5.6.1.2. |
| Lift axle 1 position
  (towed vehicle) | RGE21
  Byte 2 Bit 1-2 | Paragraph 5.6.1.2. |
| Lift axle 2 position
  (towed vehicle) | RGE21
  Byte 2 Bit 3-4 | Paragraph 5.6.1.2. |

3.1.1.

Function/Parameter

ISO 11992-2:2014 reference

Reference to paragraphs in this UN Regulation

Reverse gear status (towing vehicle)

EBS12

Byte 2 Bit 5-6

Paragraph 5.6.1.2.

Braking system wheel-based vehicle speed (towing vehicle)

EBS12

Byte 7-8

Paragraph 5.6.1.2.

Identification data index

(towing vehicle)

RGE12 Byte 5

Paragraph 5.6.1.2.

Identification data content

(towing vehicle)

RGE12 Byte 6

Paragraph 5.6.1.2.

Time/Date – Seconds (towing vehicle)

TD11 Byte 1

Paragraph 5.6.1.2.

Time/Date – Minutes (towing vehicle)

TD11 Byte 2

Paragraph 5.6.1.2.

Time/Date – Hours (towing vehicle)

TD11 Byte 3

Paragraph 5.6.1.2.

Time/Date – Months (towing vehicle)

TD11 Byte 4

Paragraph 5.6.1.2.

Time/Date – Day (towing vehicle)

TD11 Byte 5

Paragraph 5.6.1.2.

Time/Date – Year (towing vehicle)

TD11 Byte 6

Paragraph 5.6.1.2.

Time/Date – Local minute offset (towing vehicle)

TD11 Byte 7

Paragraph 5.6.1.2.

Time/Date – Local hour offset (towing vehicle)

TD11 Byte 8

Paragraph 5.6.1.2.

Braking system wheel-based vehicle speed (towed vehicle)

EBS21

Byte 3-4

Paragraph 5.6.1.2.

Lift axle 1 position

(towed vehicle)

RGE21

Byte 2 Bit 1-2

Paragraph 5.6.1.2.

Lift axle 2 position

(towed vehicle)

RGE21

Byte 2 Bit 3-4

Paragraph 5.6.1.2.

| Note: | Regarding the definition of the parameters of the TD11 message, there is a known inconsistency between the SAE J1939 and ISO 11992 standards. For the purposes of compliance to this Regulation, the TD11 message definition provided in the ISO 11992-2:2014 shall be used. |
| --- | --- |

Note:

| 3.1.2. | Mandatory messages transmitted from the towed vehicle ECU providing TPMS functionality to the towed vehicle gateway ECU:







  Function/Parameter | ISO 11992-2:2014 reference | Reference to paragraphs in this UN Regulation |
| --- | --- | --- | --- |
| Tyre Pressure Status | EBS23
  Byte 1 Bit 1-2 | Paragraph 5.6.1.2. |
| Tyre/wheel identification (pressure) | EBS23 Byte 2 | Paragraph 5.6.1.2. |

3.1.2.

Function/Parameter

ISO 11992-2:2014 reference

Reference to paragraphs in this UN Regulation

Tyre Pressure Status

EBS23

Byte 1 Bit 1-2

Paragraph 5.6.1.2.

Tyre/wheel identification (pressure)

EBS23 Byte 2

Paragraph 5.6.1.2.

| 3.1.3. | Messages transmitted from the towed vehicle ECU providing TPMS functionality to the towed vehicle gateway ECU, if supported:







  Function/Parameter | ISO 11992-2:2014 reference | Reference to paragraphs in this UN Regulation |
| --- | --- | --- | --- |
| Tyre/wheel identification (for EBS23 pressure) | EBS23 Byte 2 | Paragraph 5.6.1.2. |
| Tyre pressure | EBS23 Byte 5 | Paragraph 5.6.1.2. |
| Tyre/wheel identification | RGE23 Byte 1 | Paragraph 5.6.1.2. |
| Tyre temperature | RGE23 Byte 2-3 | Paragraph 5.6.1.2. |
| Air leakage detection | RGE23 Byte 4-5 | Paragraph 5.6.1.2. |
| Tyre pressure threshold detection | RGE23
  Byte 6 Bit 1-3 | Paragraph 5.6.1.2. |
| Tyre module power supply status | RGE23
  Byte 6 Bit 4-5 | Paragraph 5.6.1.2. |
| Identification data index | RGE23 Byte 7 | Paragraph 5.6.1.2. |
| Identification data content | RGE23 Byte 8 | Paragraph 5.6.1.2. |

3.1.3.

Function/Parameter

ISO 11992-2:2014 reference

Reference to paragraphs in this UN Regulation

Tyre/wheel identification (for EBS23 pressure)

EBS23 Byte 2

Paragraph 5.6.1.2.

Tyre pressure

EBS23 Byte 5

Paragraph 5.6.1.2.

Tyre/wheel identification

RGE23 Byte 1

Paragraph 5.6.1.2.

Tyre temperature

RGE23 Byte 2-3

Paragraph 5.6.1.2.

Air leakage detection

RGE23 Byte 4-5

Paragraph 5.6.1.2.

Tyre pressure threshold detection

RGE23

Byte 6 Bit 1-3

Paragraph 5.6.1.2.

Tyre module power supply status

RGE23

Byte 6 Bit 4-5

Paragraph 5.6.1.2.

Identification data index

RGE23 Byte 7

Paragraph 5.6.1.2.

Identification data content

RGE23 Byte 8

Paragraph 5.6.1.2.

| 3.1.4. | For messages defined in Section 3.1 of Part B of this Annex, signals shall be transmitted with the indication ‘not available’ in case the ECU does not provide such data. |
| --- | --- |

3.1.4.

| 3.2. | The support of all other messages defined within ISO 11992-2:2014 is optional for the towed vehicle gateway ECU and the towed vehicle ECU providing TPMS functionality, unless required by other Regulations. |
| --- | --- |

3.2.

| 3.3. | The towed vehicle gateway ECU and the towed vehicle ECU providing TPMS functionality shall support diagnostics as per ISO 11992-4:2014. |
| --- | --- |

3.3.

| 4. | The towed vehicle ECU providing TPMS functionality shall use the source address of ‘Other Trailer Devices’ with respect to its position in the road train as per SAE J1939-71 standard i.e. TPMS of the first towed vehicle shall use source address 207 for ‘Other Trailer #1 Devices’. |
| --- | --- |

4.

---

ANNEX 6

Test procedure to assess the functional compatibility of vehicles equipped with ISO 11992 data communication interface

| 1. | General |
| --- | --- |

1.

| 1.1. | This Annex describes a procedure that may be used to check towing and towed vehicles equipped with a communication interface as described in paragraph 5.6.1.1 of this Regulation against the functional requirements referred to in paragraph 5.6.1.1.1 of this Regulation. Alternative procedures may be used at the discretion of the Technical Service if an equivalent level of checking integrity can be established. |
| --- | --- |

1.1.

| 1.2. | The references to ISO 7638 within this Annex apply to ISO 7638-1:2018 for 24V applications and ISO 7638-2:2018 for 12V applications. |
| --- | --- |

1.2.

| 2. | Towing vehicles |
| --- | --- |

2.

| 2.1. | ISO 11992 towed vehicle simulator
  The simulator shall: |
| --- | --- |

2.1.

The simulator shall:

| 2.1.1. | Have a connector meeting ISO 7638 (7 pin) to connect to the vehicle under test. Pins 6 and 7 of the connector shall be used to transmit and receive messages complying with ISO 11992-2:2014; |
| --- | --- |

2.1.1.

| 2.1.2. | Be capable of receiving all of the messages transmitted by the motor vehicle to be type approved and be capable of transmitting all towed vehicle messages defined within ISO 11992-2:2014; |
| --- | --- |

2.1.2.

| 2.1.3. | Provide a direct or indirect readout of messages, with the parameters in the data field shown in the correct order relative to time |
| --- | --- |

2.1.3.

| 2.2. | Checking procedure |
| --- | --- |

2.2.

| 2.2.1. | Check the following, with the simulator connected to the motor vehicle via the ISO 7638 interface and whilst all towed vehicle messages relevant to the interface are being transmitted: |
| --- | --- |

2.2.1.

| 2.2.1.1. | Low Tyre Pressure Warning: |
| --- | --- |

2.2.1.1.

| 2.2.1.1.1. | Simulate a towed vehicle low tyre pressure warning and check that the low tyre pressure warning signal specified in paragraph 5.5 of this regulation is displayed.
  The parameters defined in EBS 23 bytes 1 and 2 of ISO 11992-2:2014 shall be transmitted as follows:







  Control line signalling | EBS 23 Byte 1
  Bits 1-2 | EBS 23 Byte 2 |
| --- | --- | --- | --- |
| Low Tyre Pressure Warning for tyre/wheel identification number 1,7 (Axle 1, left inner) | 002

  (tyre pressure insufficient) | 000101112

  (Tyre/Wheel ‘1,7’) |

2.2.1.1.1.

The parameters defined in EBS 23 bytes 1 and 2 of ISO 11992-2:2014 shall be transmitted as follows:

Control line signalling

EBS 23 Byte 1

Bits 1-2

EBS 23 Byte 2

Low Tyre Pressure Warning for tyre/wheel identification number 1,7 (Axle 1, left inner)

002

(tyre pressure insufficient)

000101112

(Tyre/Wheel ‘1,7’)

| 2.2.1.1.2. | Simulate a towed vehicle low tyre pressure warning (without known tyre/wheel ID) and check that the low tyre pressure warning signal specified in paragraphs 5.5 of this Regulation is displayed.
  The parameters defined in EBS 23 bytes 1 and 2 of ISO 11992-2:2014 shall be transmitted as follows:







  Control line signalling | EBS 23 Byte 1
  Bits 1-2 | EBS 23 Byte 2 |
| --- | --- | --- | --- |
| Low Tyre Pressure Warning (without known tyre/wheel ID) | 002

  (tyre pressure insufficient) | 000000002

  (Tyre/Wheel ID not defined or wheel not defined and axle > 1510)
  OR
  111111112

  (Tyre/Wheel ID not available, available or wheel = 1510 and axle = 1510) |

2.2.1.1.2.

The parameters defined in EBS 23 bytes 1 and 2 of ISO 11992-2:2014 shall be transmitted as follows:

Control line signalling

EBS 23 Byte 1

Bits 1-2

EBS 23 Byte 2

Low Tyre Pressure Warning (without known tyre/wheel ID)

002

(tyre pressure insufficient)

000000002

(Tyre/Wheel ID not defined or wheel not defined and axle > 1510)

OR

111111112

(Tyre/Wheel ID not available, available or wheel = 1510 and axle = 1510)

| 2.2.1.2. | TPMS Malfunction Warning: |
| --- | --- |

2.2.1.2.

| 2.2.1.2.1. | Simulate a towed vehicle TPMS malfunction, signalled by the towed vehicle TPMS, and check that the towed vehicle TPMS malfunction indication warning signal specified in paragraph 5.5.6 of this Regulation is displayed.
  The parameters defined in EBS 23 bytes 1 and 2 of ISO 11992-2:2014 shall be transmitted as follows:







  Control line signalling | EBS 23 Byte 1
  Bits 1-2 | EBS 23 Byte 2 |
| --- | --- | --- | --- |
| TPMS Malfunction for tyre/wheel identification number 1,7 (Axle 1, left inner) | 102

  (Error indicator) | 000101112

  (Tyre/Wheel ‘1,7’) |

2.2.1.2.1.

The parameters defined in EBS 23 bytes 1 and 2 of ISO 11992-2:2014 shall be transmitted as follows:

Control line signalling

EBS 23 Byte 1

Bits 1-2

EBS 23 Byte 2

TPMS Malfunction for tyre/wheel identification number 1,7 (Axle 1, left inner)

102

(Error indicator)

000101112

(Tyre/Wheel ‘1,7’)

| 2.2.1.2.2. | Simulate a towed vehicle TPMS malfunction (without known tyre/wheel ID) and check that the towed vehicle TPMS malfunction indication warning signal specified in paragraph 5.5.6 of this Regulation is displayed.
  The parameters defined in EBS 23 bytes 1 and 2 of ISO 11992-2:2014 shall be transmitted as follows:







  Control line signalling | EBS 23 Byte 1
  Bits 1-2 | EBS 23 Byte 2 |
| --- | --- | --- | --- |
| TPMS Malfunction (without known tyre/wheel ID) | 102

  (Error indicator) | 000000002

  (Tyre/Wheel ID not defined or wheel not defined and axle > 1510)
  OR
  111111112

  (Tyre/Wheel ID not available or wheel = 1510 and axle = 1510) |

2.2.1.2.2.

The parameters defined in EBS 23 bytes 1 and 2 of ISO 11992-2:2014 shall be transmitted as follows:

Control line signalling

EBS 23 Byte 1

Bits 1-2

EBS 23 Byte 2

TPMS Malfunction (without known tyre/wheel ID)

102

(Error indicator)

000000002

(Tyre/Wheel ID not defined or wheel not defined and axle > 1510)

OR

111111112

(Tyre/Wheel ID not available or wheel = 1510 and axle = 1510)

| 2.2.1.2.3. | Simulate a permanent failure in the communication line and check that the towed vehicle TPMS malfunction indication warning signal specified in paragraph 5.5.6 of this Regulation is displayed. |
| --- | --- |

2.2.1.2.3.

| 2.2.1.2.4. | Note that the towed vehicle TPMS malfunction indication would not be displayed in the case that valid TPMS information is available on an alternative interface. |
| --- | --- |

2.2.1.2.4.

| 3. | Towed vehicles |
| --- | --- |

3.

| 3.1. | ISO 11992 towing vehicle simulator




  Figure 1 Arrangement of device under test and vehicle simulator where TPMS functionality is provided by ECU connected via ISO 11898-1:2015 and 11898-2:2016 interface








  Figure 2 Arrangement of device under test and vehicle simulator where TPMS functionality is provided by ECU connected to towing vehicle |
| --- | --- |

3.1.

Image 5

  Figure 1 Arrangement of device under test and vehicle simulator where TPMS functionality is provided by ECU connected via ISO 11898-1:2015 and 11898-2:2016 interface

Image 6

  Figure 2 Arrangement of device under test and vehicle simulator where TPMS functionality is provided by ECU connected to towing vehicle

The simulator shall:

| 3.1.1. | Have a connector meeting ISO 7638 (7 pin) to connect to the vehicle under test. Pins 6 and 7 of the connector shall be used to transmit and receive messages complying with ISO 11992-2:2014; |
| --- | --- |

3.1.1.

| 3.1.2 | Have a warning display and an electrical power supply for the towed vehicle; |
| --- | --- |

3.1.2

| 3.1.3. | Be capable of receiving all of the messages transmitted by the towed vehicle to be type approved and be capable of transmitting all motor vehicle messages defined within ISO 11992-2:2014; |
| --- | --- |

3.1.3.

| 3.1.4. | Provide a direct or indirect readout of messages, with the parameters in the data field shown in the correct order relative to time. |
| --- | --- |

3.1.4.

| 3.2. | Checking procedure |
| --- | --- |

3.2.

| 3.2.1 | Configure the ISO 11992-2:2014 towed vehicle ECU to use either VIN ‘AABBCCDDEE1234567’ or the actual VIN of the towed vehicle. |
| --- | --- |

3.2.1

| 3.2.2 | Check the following, with the simulator connected to the towed vehicle and whilst all towing vehicle messages relevant to the interface are being transmitted: |
| --- | --- |

3.2.2

| 3.2.2.1. | The transmitted VIN shall be the one configured in paragraph 3.2.1 of this Annex |
| --- | --- |

3.2.2.1.

| 3.2.2.2. | Follow the test procedure defined in Annex 3 to this Regulation and check that the TPMS warning and malfunction signals are transmitted as defined in paragraphs 2.2 and 2.3 of Part A of Annex 5 to this Regulation. |
| --- | --- |

3.2.2.2.

---