Document ID: chunk:federal_register_of_legislation:F2008C00323:reg:20:p4
Version: federal_register_of_legislation:F2008C00323
Segment Type: reg
Provision Reference: reg 20 (pt 4/23)
Character Range: 149905–154145

4.2.11.2.7.1.  Written description and/or drawing of the malfunction indicator (MI):...
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               4.2.11.2.7.2.  List and purpose of all components monitored by the OBD system:.....
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               4.2.11.2.7.3. Written description (general working principles) for:
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               4.2.11.2.7.3.1.  Positive-ignition engines

               4.2.11.2.7.3.1.1.  Catalyst monitoring :.........................................

               4.2.11.2.7.3.1.2.  Misfire detection :............................................

               4.2.11.2.7.3.1.3.  Oxygen sensor monitoring:.....................................

               4.2.11.2.7.3.1.4.  Other components monitored by the OBD system:..................
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               4.2.11.2.7.3.2.  Compression-ignition engines

               4.2.11.2.7.3.2.1.  Catalyst monitoring:..........................................

               4.2.11.2.7.3.2.2.  Particulate trap monitoring :....................................

               4.2.11.2.7.3.2.3.  Electronic fuelling system monitoring :...........................

               4.2.11.2.7.3.2.4.  Other components monitored by the OBD system :..................

               4.2.11.2.7.4.  Criteria for MI activation (fixed number of driving cycles or statistical method):

               4.2.11.2.7.5.  List of all OBD output codes and formats used (with explanation of each):
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               4.2.11.2.7.6. The following additional information must be provided by the vehicle manufacturer for the purposes of enabling the manufacture of OBD-compatible replacement or service parts and diagnostic tools and test equipment, unless such information is covered by intellectual property rights or constitutes specific know-how of the manufacturer or the OEM supplier(s).

               4.2.11.2.7.6.1. A description of the type and number of the pre-conditioning cycles used for the original type approval of the vehicle.

               4.2.11.2.7.6.2. A description of the type of the OBD demonstration cycle used for the original type-approval of the vehicle for the component monitored by the OBD system.

               4.2.11.2.7.6.3. A comprehensive document describing all sensed components with the strategy for fault detection and MI activation (fixed number of driving cycles or statistical method), including a list of relevant secondary sensed parameters for each component monitored by the OBD system.  A list of all OBD output codes and format used (with an explanation of each) associated with individual emission related power-train components and individual non-emission related components, where monitoring of the component is used to determine MI activation.  In particular, a comprehensive explanation for the data given in service $05 Test ID $21 to FF and the data given in service $06 must be provided.  In the case of vehicle types that use a communication link in accordance with ISO 15765-4 'Road vehicles – Diagnostics on Controller Area Network (CAN) – Part 4: Requirements for emissions-related systems', a comprehensive explanation for the data given in service $06 Test ID $00 to FF, for each OBD monitor ID supported, must be provided.

               4.2.11.2.7.6.4. The information required by this paragraph may, for example, be defined by completing a table as follows, which shall be attached to this Annex:

Component  Fault code  Monitoring strategy            Fault detection criteria                          MI activation criteria  Secondary parameters                                       Precondi-tioning   Demonstration test
Catalyst   P0420       Oxygen sensor 1 and 2 signals  Difference between sensor 1 and sensor 2 signals  3rd cycle               Engine speed, engine load, A/F mode, catalyst temperature  Two Type I cycles  Type I

               4.2.12. LPG fuelling system: yes/no 1/