As amended: March 22, 2012

Board Hearing: January 26-27, 2012

State of California

AIR RESOURCES BOARD

CALIFORNIA REFUELING EMISSION STANDARDS AND TEST PROCEDURES

FOR 2001 AND SUBSEQUENT MODEL MOTOR VEHICLES

Adopted: August 5, 1999

Amended: September 5, 2003

Amended: June 22, 2006

Amended: October 17, 2007

Amended: December 2, 2009

Amended: September 27, 2010

Amended: March 22, 2012

Note: Proposed amendments to this document are shown in underline to

indicate additions and strikeouts to indicate deletions compared to the test

procedures as last amended September 27, 2010. 
As amended: March 22, 2012

Board Hearing: January 26-27, 2012

NOTE: This document is incorporated by reference in section 1978(b), title 13, 

California Code of Regulations (CCR). Additional requirements necessary to complete

an application for certification of motor vehicles are contained in other documents that

are designed to be used in conjunction with this document. These other documents

include:

1. “California 2001 through 2014 Model Criteria Pollutant Exhaust Emission 

Standards and Test Procedures for 2001 and Subsequent and 2009 through 2016

Model Greenhouse Gas Exhaust Emission Standards and Test Procedures for

Passenger Cars, Light-Duty Trucks and Medium-Duty Vehicles” (incorporated by 

reference in section 1961(d), title 13, CCR).

2. “California 2015 and Subsequent Model Criteria Pollutant Exhaust Emission 

Standards and Test Procedures and 2017 and Subsequent Model Greenhouse Gas 

Exhaust Emission Standards and Test Procedures for Passenger Cars, Light-Duty 

Trucks and Medium-Duty Vehicles” (incorporated by reference in section 1961.2 (d), 

title 13, CCR).

32. “California Exhaust Emission Standards and Test Procedures for 2009 and

Subsequent Model Zero-Emission Vehicles and Hybrid Electric Vehicles, in the

Passenger Car, Light-Duty Truck, and Medium-Duty Vehicle Classes” (incorporated by 

reference in section 1962.1(h), title 13, CCR).

43. “California Evaporative Emission Standards and Test Procedures Forfor 2001 and

Subsequent Model Motor Vehicles” (incorporated by reference in section 1976(c), title 

13, CCR).

54. “Malfunction and Diagnostic System Requirements – 1994 and Subsequent ModelYear Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles and Engines” 

(incorporated by reference in section 1968.1, title 13, CCR).

65. “Malfunction and Diagnostic System Requirements – 2004 and Subsequent ModelYear Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles and Engines” 

(incorporated by reference in section 1968.2, title 13, CCR).

76. “Specifications for Fill Pipes and Openings of Motor Vehicle Fuel Tanks”

(incorporated by reference in section 2235, title 13, CCR).
G-1-1

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

CALIFORNIA REFUELING EMISSION STANDARDS AND TEST PROCEDURES

FOR 2001 AND SUBSEQUENT MODEL MOTOR VEHICLES

The provisions of Title 40, Code of Federal Regulations (CFR), Part 86, Subparts B (as 

adopted or amended by the U.S. Environmental Protection Agency (U.S. EPA) on the 

date listed) and S (as adopted on May 4, 1999, or as last amended on such other date 

set forth next to the 40 CFR Part 86 section title listed below) to the extent they pertain 

to the testing and compliance of vehicle refueling emissions for passenger cars, lightduty trucks and medium-duty vehicles, are hereby adopted as the “California Refueling 

Emission Standards and Test Procedures for 2001 and Subsequent Model Motor 

Vehicles,” with the following exceptions and additions.

Subpart S Requirements

I. General Certification Requirements for Refueling Emissions

A. Applicability

1. These refueling standards and test procedures are applicable to all new

2001 and subsequent model gasoline-fueled, alcohol-fueled, diesel-fueled, liquefied

petroleum gas-fueled, natural gas-fueled, and hybrid electric passenger cars (including

2012 and subsequent model-year off-vehicle charge capable hybrid electric vehicles),

light-duty trucks and medium-duty vehicles with a gross vehicle weight rating of less

than 8,501 lbs., and to all new complete 2015 and subsequent model gasoline-fueled, 

alcohol-fueled, diesel-fueled, liquefied petroleum gas-fueled, natural gas-fueled, and 

hybrid electric (including 2012 and subsequent model-year off-vehicle charge capable 

hybrid electric vehicles) medium-duty vehicles with a gross vehicle weight rating of 

8,501 through 14,000 lbs. A manufacturer may elect to certify 2009 through 2011 

model-year off-vehicle charge capable hybrid electric vehicles using these provisions. In 

cases where a provision applies only to a certain vehicle group based on its model year, 

vehicle class, motor fuel, engine type, or other distinguishing characteristics, the limited

applicability is cited in the appropriate section or paragraph.

2. For general certification purposes, the requirements set forth in the

"California 2001 through 2014 Model Criteria Pollutant Exhaust Emission Standards and 

Test Procedures for 2001 and Subsequent and 2009 through 2016 Model Greenhouse 

Gas Exhaust Emission Standards and Test Procedures for Passenger Cars, Light-Duty 

Trucks and Medium-Duty Vehicles;” the “California 2015 and Subsequent Model Criteria 

Pollutant Exhaust Emission Standards and Test Procedures and 2017 and Subsequent 

Model Greenhouse Gas Exhaust Emission Standards and Test Procedures for 

Passenger Cars, Light-Duty Trucks and Medium-Duty Vehicles;” the “California Exhaust 

Emission Standards and Test Procedures for 2009 and Subsequent Model ZeroEmission Vehicles and Hybrid Electric Vehicles, in the Passenger Car, Light-Duty Truck, 

and Medium-Duty Vehicle Classes;” and the “California Evaporative Emission

Standards and Test Procedures For 2001 and Subsequent Model Motor Vehicles,” shall

apply, except as otherwise noted in these test procedures.
G-1-2

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

3. Reference to vehicle sales throughout the United States shall mean

vehicle sales in California, except when certifying to the refueling standards, in which

case, vehicle sales shall mean throughout the United States.

4. A small volume manufacturer is defined as any vehicle manufacturer with

California actual sales less than or equal to 4,500 new vehicles per model year based

on the average number of vehicles sold by the manufacturer in the previous three

consecutive years.

5. Regulations concerning U.S. EPA hearings, inspections, specific language

on the Certificate of Conformity, alternative useful life, and selective enforcement audit

shall not be applicable to these procedures, except where specifically noted.

6. In those instances where testing conditions or parameters are not practical 

or feasible for vehicles certified to the refueling standards, the manufacturer shall 

provide a test plan that provides equal or greater confidence in comparison to these test 

refueling procedures. The test plan must be approved in advance by the Executive 

Officer.

7. The term “[no change]” means that these test procedures do not modify

the applicable federal requirement.

8. The specifications for the fuel used in testing are set forth in 40 CFR 

§86.113-94 [February 18, 2000]. Alternatively, California certification fuel specified in 

Part II, A.100.3.1.2 (test fuel with 10 percent ethanol) of the “California 2015 and 

Subsequent Model Criteria Pollutant Exhaust Emission Standards and Test Procedures 

and 2017 and Subsequent Model Greenhouse Gas Exhaust Emission Standards and 

Test Procedures for Passenger Cars, Light-Duty Trucks and Medium-Duty Vehicles” 

may be used for 2015 and subsequent model vehicles is not allowed for certification or 

in-use testing as long as California temperatures are applied as described in Subpart B,

section II.B.5.2.

B. Definitions, Acronyms, Terminology

1. These test procedures incorporate by reference the definitions set forth in

the Code of Federal Regulations; and, the definitions as set forth in the "California 2001 

through 2014 Model Criteria Pollutant Exhaust Emission Standards and Test 

Procedures for 2001 and Subsequent and 2009 through 2016 Model Greenhouse Gas 

Exhaust Emission Standards and Test Procedures for Passenger Cars, Light-Duty 

Trucks and Medium-Duty Vehicles,” the “California 2015 and Subsequent Model Criteria 

Pollutant Exhaust Emission Standards and Test Procedures and 2017 and Subsequent 

Model Greenhouse Gas Exhaust Emission Standards and Test Procedures for 

Passenger Cars, Light-Duty Trucks and Medium-Duty Vehicles,” in the “California

Exhaust Emission Standards and Test Procedures for 2009 and Subsequent Model

Zero-Emission Vehicles and Hybrid Electric Vehicles, in the Passenger Car, Light-Duty
G-1-3

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

Truck, and Medium-Duty Vehicle Classes,” and in the “California Evaporative Emission

Standards and Test Procedures For 2001 and Subsequent Model Motor Vehicles.”

C. Useful Life

1. Delete §86.1805-01; §86.1805-04 and replace with:

“Useful life” shall have the same meaning as provided in title 13, CCR, §2112.

D. On-Board Diagnostics

1. Delete §86.1806 and replace with:

The applicable sections of the “Malfunction and Diagnostic System Requirements 

– 1994 and Subsequent Model-Year Passenger Cars, Light-Duty Trucks, and MediumDuty Vehicles and Engines,” as set forth in title 13, CCR, section 1968.1; and, the 

“Malfunction and Diagnostic System Requirements – 2004 and Subsequent Model-Year 

Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles and Engines,” as set 

forth in title 13, CCR, section 1968.2, are hereby incorporated by reference into this test 

procedure. For purposes of this test procedure, all references to evaporative system 

monitoring, malfunction criteria, and MIL illumination and fault code storage shall also 

apply to refueling systems.

E. General Standards, increase in emissions; unsafe conditions; waivers

1. Amend §86.1810-01 [July 12, 2001] as follows:

1.1. (a) through (j). [See the "California 2001 through 2014 Model 

Criteria Pollutant Exhaust Emission Standards and Test Procedures for 2001 and 

Subsequent and 2009 through 2016 Model Greenhouse Gas Exhaust Emission 

Standards and Test Procedures for Passenger Cars, Light-Duty Trucks and MediumDuty Vehicles;” the “California 2015 and Subsequent Model Criteria Pollutant Exhaust 

Emission Standards and Test Procedures and 2017 and Subsequent Model 

Greenhouse Gas Exhaust Emission Standards and Test Procedures for Passenger 

Cars, Light-Duty Trucks and Medium-Duty Vehicles;” or the “California Evaporative 

Emission Standards and Test Procedures for 2001 and Subsequent Model Motor 

Vehicles.”]

1.2. (k) [No change.]

1.3. (l) Substitute certification to the applicable refueling emission

standards set forth in section I.I.F. of these test procedures instead of with the

standards set forth in §86.1811-04(e); §86.1812-01(e); §86.1813-01(e); and, §86.1816-

05(e).

1.4. (m) Substitute compliance with applicable refueling emission

standards set forth in section I.I.F. of these test procedures instead of with the

standards set forth in §86.1811-04(e); §86.1812-01(e); §86.1813-01(e); and, §86.1816-

05(e).
G-1-4

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

1.5. (n) [No change.]

1.6. (o) and (p) [See the "California 2001 through 2014 Model Criteria 

Pollutant Exhaust Emission Standards and Test Procedures for 2001 and Subsequent

and 2009 through 2016 Model Greenhouse Gas Exhaust Emission Standards and Test 

Procedures for Passenger Cars, Light-Duty Trucks and Medium-Duty Vehicles,” and the

“California 2015 and Subsequent Model Criteria Pollutant Exhaust Emission Standards 

and Test Procedures and 2017 and Subsequent Model Greenhouse Gas Exhaust 

Emission Standards and Test Procedures for Passenger Cars, Light-Duty Trucks and 

Medium-Duty Vehicles.”]

1.7. A manufacturer must demonstrate compliance with the fuel spillage

test requirements in the “Specifications for Fill Pipes and Openings of Motor Vehicle 

Fuel Tanks," which is hereby incorporated by reference herein.

2. In addition to the provisions set forth in these test procedures, the ARB

reserves the authority to require testing to enforce compliance and to prevent

noncompliance with the refueling emission standard.

3. Vehicles certified to the refueling emission standards set forth in Section 

I.F.2.2. below, shall not be counted in the phase-in sales percentage compliance 

determinations.

F. Emission Standards

1. Delete 40 CFR §§86.1811 through 86.1816 (all years).

2. The maximum refueling emissions for 2001 and subsequent model

passenger cars, light-duty trucks and medium-duty vehicles with a gross vehicle weight

rating less than 8,501 lbs., and 2015 and subsequent model complete medium-duty 

vehicles with a gross vehicle weight rating 8,501 through 14,000 lbs. for the full useful 

life are:

2.1. For gasoline-fueled, alcohol-fueled, diesel-fueled, fuel-flexible, and

hybrid electric vehicles: 0.20 grams hydrocarbons per gallon of fuel dispensed. [For

purposes of these test procedures, hydrocarbons shall mean organic material

hydrocarbon equivalent for alcohol-fueled vehicles.] For liquefied petroleum gas-fueled

vehicles: 0.15 grams hydrocarbons per gallon of fuel dispensed.

2.2. Vehicles powered by diesel fuel are not required to conduct testing

to demonstrate compliance with the refueling emission standards set forth above,

provided that all of the following provisions are met:

(A) The manufacturer can attest to the following evaluation:

“Due to the low vapor pressure of diesel fuel and the vehicle tank temperatures,

hydrocarbon vapor concentrations are low and the vehicle meets the 0.20 grams/gallon

refueling emission standard without a control system.”

(B) The certification requirement described in section I.F.2.2.(A) 

is provided in writing and applies for the full useful life of the vehicle.

2.3. Incomplete vehicles of 14,000 pounds gross vehicle weight rating 

or less that are certified as incomplete vehicles for the purposes of evaporative 
G-1-5

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

emissions testing as set forth in the “California Evaporative Emission Standards and 

Test Procedures for 2001 and Subsequent Model Motor Vehicles,” are not required to 

demonstrate compliance with the refueling emission standards set forth in 2.1.

G. Durability Demonstration procedures for refueling emissions.

1. §86.1825-01 Durability Demonstration procedures for refueling emissions 

[October 6, 2000] [No change.] Amend as follows: Add the following sentences to the

first paragraph:

2. 
G-2-1

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

Subpart B - Emission Regulations for 1977 and Later Model Year New Light-Duty

Vehicles and New Light-Duty Trucks; Test Procedures

40 CFR §§ 86.101 through 86.145 and Appendix I (UDDS Schedule) of this Subpart B,

as incorporated by reference and amended in the "California 2001 through 2014 Model 

Criteria Pollutant Exhaust Emission Standards and Test Procedures for 2001 and 

Subsequent and 2009 through 2016 Model Greenhouse Gas Exhaust Emission 

Standards and Test Procedures for Passenger Cars, Light-Duty Trucks and MediumDuty Vehicles;” the “California 2015 and Subsequent Model Criteria Pollutant Exhaust 

Emission Standards and Test Procedures and 2017 and Subsequent Model 

Greenhouse Gas Exhaust Emission Standards and Test Procedures for Passenger 

Cars, Light-Duty Trucks and Medium-Duty Vehicles;” the “California Exhaust Emission

Standards and Test Procedures for 2009 and Subsequent Model Zero-Emission

Vehicles and Hybrid Electric Vehicles, in the Passenger Car, Light-Duty Truck, and

Medium-Duty Vehicle Classes;” and, the “California Evaporative Emission Standards

and Test Procedures for 2001 and Subsequent Model Motor Vehicles,” are hereby

incorporated by reference herein.

II. Refueling Emissions Test Procedures

A. Fuel Spitback Emissions

1. §86.146-96 Fuel dispensing spitback procedure [August 23, 1995] [No 

change.]

B. Refueling Emissions

1. §86.150-98 Refueling test procedure; overview [September 21, 1994]

1.1. Revise subparagraph (a), first sentence, as follows: The

refueling emissions test procedure described in this and subsequent sections is used to

determine the conformity of vehicles with the refueling emissions standards set forth in

section I.F. of these test procedures for all of the vehicle types specified in section I.A.

2. §86.151-98 General requirements; refueling test [April 6, 1994]

2.1. Revise subparagraph (a), first sentence, as follows: The

refueling emissions procedure, shown in Figure B98-12, starts with the stabilizing of the

vehicle and the loading of the refueling emissions canister(s) and continues with the 

vehicle drive for purging of the canister, followed by the refueling emissions

measurement.

3. §86.152-98 Vehicle preparation; refueling test [December 8, 2005]

3.1. Amend subparagraph (a) to include: For 2012 and

subsequent off-vehicle charge capable hybrid electric vehicles equipped with 

nonintegrated refueling canister-only systems, the refueling canister shall not be 

removed from the vehicle.

3.2. Subparagraph (b) [No change.]
G-2-2

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

3.3. Subparagraph (c) [No change.]

4. §86.153-98 Vehicle and canister preconditioning; refueling test 

[December 8, 2005]

4.1. Amend subparagraph (a) to include: The vehicle

preconditioning drive for 2012 and later model-year off-vehicle charge capable hybrid

electric vehicles shall include at least one complete UDDS performed entirely under a

charge-sustaining mode of operation, The battery state-of-charge net change tolerance

provisions specified in section F.10., of the “California Exhaust Emission Standards and

Test Procedures for 2009 and Subsequent Model Zero-Emission Vehicles and Hybrid

Electric Vehicles, in the Passenger Car, Light-Duty Truck, and Medium-Duty Vehicle

Classes” shall not apply.

4.1.1. Add subparagraph (a)(1): 2012 and subsequent model-year

off-vehicle charge capable hybrid electric vehicles equipped with non-integrated

refueling canister-only systems. Such vehicles and vapor storage canisters shall be

preconditioned in accordance with the preconditioning procedures for the two-diurnal

evaporative emissions test specified in 40 CFR 86.132-96(a) through (j), with the

following exceptions.

4.1.2. Prior to conducting the applicable test sequence, the 

nonintegrated refueling canister shall have already achieved a stabilized state, such as 

is accomplished using the stabilization method described in section III.D.3.3.4, of the

“California Evaporative Emission Standards and Test Procedures Forfor 2001 and

Subsequent Model Motor Vehicles.” Within 60 minutes of completing the vehicle

preconditioning drive, a second fuel drain and fill step shall be performed, The fuel tank

shall be filled to the prescribed tank fuel volume of 95 percent of the manufacturer’s

nominal fuel tank capacity, determined to the nearest one-tenth of a U.S. gallon (0.38 

liter) with the specified fuel.

4.1.3. After the second fuel drain and tank refill step is completed,

the initial testing state of the canister shall be established by purging while performing

vehicle driving, using either the chassis dynamometer procedure or the test track

procedure, as described in subparagraphs (d)(1) and (d)(2) of 40 CFR 86.153-98. For

vehicles equipped with dual fuel tanks that can be individually selected or isolated, the

required volume of fuel shall be driven out of one tank, the second tank shall be

selected as the fuel source, and the required volume of fuel shall be driven out of the

second tank. A manufacturer shall plan for interruptions in the vehicle drivedowns due 

to factors such as work schedules, driver relief, and test equipment considerations,

using good engineering practice.

4.1.3.1. The vehicle drivedown will consume 85%, or less as

determined by the manufacturer, of the manufacturers’ nominal fuel tank capacity,

4.1.3.2. In order to reduce the amount of time required to consume

85 percent of the fuel tank capacity, as required by either subparagraph (d)(1) or (d)(2)

in 40 CFR 86.153-98, as applicable, a manufacturer may elect to set the battery stateof- charge at a level that maximizes the amount of engine operation, prior to conducting

either the chassis dynamometer or the test track driving procedure, as applicable.

4.1.3.3. With advance Executive Officer approval, a manufacturer

may optionally elect to bench purge the canister either during the initial soak period,
G-2-3

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

specified in 40 CFR §86.132-96(c)(1), or after the vehicle preconditioning drive step

specified in section II.B.4.1., in lieu of performing the second fuel drain/fill and vehicle

drivedown steps specified in sections II.B.4.1.2. and II.B.4.1.3. Approval by the

Executive Officer shall be based upon assurance that the canister will be bench purged

by an equivalent volume of air corresponding to a consumption of 85%, or less as

determined by the manufacturer, of the manufacturers’ nominal fuel tank capacity, and

that the characteristics of the purge flow through the canister, such as flow rates, shall

be representative of flow that occurs under the specified vehicle drivedown UDDS

cycles. Within 60 minutes of completing the bench purging, the fuel drain and fill step

specified in section II.B.4.1.4., shall be performed.

4.1.4. Within 60 minutes of completing the vehicle drivedown, a

third fuel drain and fill step shall be performed in which the fuel tank shall be filled to a

prescribed tank fuel volume of 10 percent of the manufacturer’s nominal fuel tank

capacity, determined to the nearest one-tenth of a U.S. gallon (0.38 liter) with the

specified fuel. The manufacturer may isolate the canister using any method that does

not compromise the integrity of the system. A description of the canister isolation

method shall be included in the manufacturer’s certification application. When the

refueling canister is isolated from its system, fuel vapors shall be allowed to be vented

from the fuel tank, as appropriate, during this fill step.

4.1.5. In lieu of performing the third fuel drain and fill step specified

in section II.B.4.1.4., the required fuel tank volume of 10 percent may be established by

using a measured drain of the fuel tank, within 60 minutes of completing the vehicle

drivedown.

4.1.6. Fuel-tank-refill canister loading. Good engineering practice

and safety considerations, such as, but not limited to, adequate ventilation and

appropriate electrical groundings, shall apply.

4.1.7. The test vehicle shall be allowed to soak for a minimum of 6 

hours and a maximum of 24 hours, at 80oF ±3oF (27oC ±1.7oC), prior to starting the fueltank-fill canister-loading step.

4.1.7.1. Off-vehicle charging to increase the battery state-of-charge

to the highest level allowed by the manufacturer, prior to either the chassis

dynamometer or the test track driving procedures specified in section II.B.4.4., shall

occur during the soak period specified in section II.B.4.1.7.

4.1.8. The refueling canister shall not be isolated from its system

during the fuel-tank-refill canister-loading step.

4.1.9. The test vehicle’s fuel fill pipe cap shall be removed

4.1.10. The dispensed fuel temperature recording system shall be

started.

4.1.11. The fuel nozzle shall be inserted into the fill pipe neck of the

test vehicle, to its maximum penetration, and the tank refueling operation shall start.

The plane of the nozzle's handle shall be approximately perpendicular to the floor. The

fuel shall be dispensed at a temperature of 67oF ±3.0oF (19.4oC ±1.7oC), and at a

dispensing rate of 9.8 gal/min ±0.3 gal/min (37.1 liter/min ±1.1 liter/min). If using 

California certification fuel, the fuel shall be dispensed at a temperature of 79±1.5 0F 

(26.1±0.8 0C) and at a dispensing rate of 9.8±0.3 gal/min (37.1±1.1 liter/min). When 
G-2-4

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

this refueling operation is conducted by the Executive Officer, a dispensing rate that is 

not less than 4.0 gal/min (15.1 liter/min) may be used.

4.1.12. The fuel flow shall continue until the refueling nozzle

automatic shut-off is activated. The amount of fuel dispensed must be at least 85 

percent of the nominal fuel tank volume, determined to the nearest one-tenth of a U.S. 

gallon (0.38 liter). If an automatic nozzle shut-off occurs prior to this point, the

dispensing shall be reactivated within 15 seconds, and fuel dispensing continued as

needed. A minimum of 3 seconds shall elapse between any automatic nozzle shutoff

and the subsequent resumption of fuel dispensing.

4.1.13. As soon as possible after completing the refilling step,

remove the fuel nozzle from the fill pipe neck, and replace the test vehicle’s fuel fill pipe

cap.

4.1.14. The refueling canister shall be isolated from its system as

soon as possible after completing the refilling step.

4.1.15. For vehicles equipped with more than one fuel tank, the

steps described in this section shall be performed for each fuel tank.

4.1.16. When the fuel-tank-refill canister-loading operation is

completed, the test vehicle shall proceed to the non-integrated system canister purging

procedures specified in section II.B.4.4. The canister shall not be isolated from its

system during these canister-purging procedures.

4.1.17. The Executive Officer may approve minor modifications to

this canister -loading method when such modifications are supported by good

engineering judgment, and do not reduce the stringency of the method.

4.2. Subparagraph (b) [No change.]

4.3. Subparagraph (c), amend subparagraph (c)(1) to include: A

2012 and later model-year off-vehicle charge capable hybrid electric vehicle that is 

tested either for exhaust emissions only or for refueling emissions, shall be processed in 

accordance with the provisions of section F, of the “California Exhaust Emission

Standards and Test Procedures for 2009 and Subsequent Model Zero-Emission

Vehicles and Hybrid Electric Vehicles, in the Passenger Car, Light-Duty Truck, and

Medium-Duty Vehicle Classes,” with the following exceptions.

4.3.1. For such vehicles, the battery state-of-charge setting prior to

the cold start exhaust test shall be at the highest level allowed by the manufacturer.

This requirement shall be applicable regardless of a vehicle’s ability to allow, or not to

allow, manual activation of the auxiliary power unit. If off-vehicle charging is required to

increase the battery state-of-charge for the proper setting, then this charging shall occur

during the canister preconditioning process.

4.3.2. The battery state-of-charge net change tolerance provisions

specified in section F.10., of the “California Exhaust Emission Standards and Test

Procedures for 2009 and Subsequent Model Zero-Emission Vehicles and Hybrid

Electric Vehicles, In Thein the Passenger Car, Light-Duty Truck, and Medium-Duty 

Vehicle Classes” shall not apply.

4.4. Amend subparagraph (d) as follows: Canister purging: 

nonintegrated systems. For all vehicles, except for 2012 and subsequent model-year 

off-vehicle charge capable hybrid electric vehicles equipped with non-integrated 

refueling canister-only systems, within one hour of completion of canister loading to
G-2-5

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

breakthrough, the fuel tank(s) shall be further filled to 95 percent of nominal tank

capacity determined to the nearest one-tenth of a U.S. gallon (0.38 liter) with the fuel

specified in Sec. 86.113-94. During this fueling operation, the refueling emissions

canister(s) shall be disconnected, unless the manufacturer specifies that the canister(s)

should not be disconnected. Following completion of refueling, the refueling emissions

canister(s) shall be reconnected, if the canister was disconnected during refueling.

Special care shall be taken during this step to avoid damage to the components and the

integrity of the fuel system. For all vehicles, including 2012 and subsequent model-year

off-vehicle charge capable hybrid electric vehicles equipped with non-integrated

refueling canister-only systems, vehicle driving to purge the refueling canister(s) shall

be performed using either the chassis dynamometer procedure or the test track

procedure, as described in subparagraphs (d)(1) and (d)(2) of 40 CFR 86.153-9. The 

Executive Officer may choose to shorten the vehicle driving for a partial refueling test as 

described in subparagraph (d)(3) of 40 CFR 86.153-98. For vehicles equipped with 

dual fuel tanks that can be individually selected or isolated, the required volume of fuel 

shall be driven out of one tank, the second tank shall be selected as the fuel source, 

and the required volume of fuel shall be driven out of the second tank. A manufacturer 

shall plan for interruptions in the vehicle drivedowns due to factors such as work 

schedules, driver relief, and test equipment considerations, using good engineering 

practice. 

4.4.1. A 2012 and subsequent model-year off-vehicle charge

capable hybrid electric vehicle shall be processed in accordance with the provisions of

section F of the “California Exhaust Emission Standards and Test Procedures for 2009

and Subsequent Model Zero-Emission Vehicles and Hybrid Electric Vehicles, in the

Passenger Car, Light-Duty Truck, and Medium-Duty Vehicle Classes,” with the following

exception.

4.4.2. For such vehicles, the battery state-of-charge setting prior to

either the chassis dynamometer or the test track driving procedures, as applicable, shall

be at the highest level allowed by the manufacturer. This requirement shall be

applicable regardless of a vehicle’s ability to allow, or not to allow, manual activation of

the auxiliary power unit. If off-vehicle charging is required to increase the battery stateof-charge for the proper setting, then this charging shall occur during the soak period

specified in section II.B.4.1.7., for 2012 and subsequent model-year off-vehicle charge

capable hybrid electric vehicles equipped with non-integrated refueling canister-only

systems, and during the canister preconditioning process for all other hybrid electric

vehicles.

4.4.2.1. In order to reduce the amount of time required to consume

85 percent of the fuel tank capacity, as required by either subparagraph (d)(1) or (d)(2)

in 40 CFR 86.153-98, as applicable, a manufacturer may elect to set the battery stateof- charge at a level that is less than specified in section II.B.4.4.2., prior to conducting

either the chassis dynamometer or the test track driving procedure, as applicable. Such

an election shall be allowed by the Executive Officer unless information, such as in-use

test results, or other applicable information that may become available, indicates that

such an election compromises the stringency of the test procedures.

4.4.3. The battery state-of-charge net change tolerance provisions

specified in section F.10., of the “California Exhaust Emission Standards and Test
G-2-6

As amended: March 22, 2012

Board Hearing: January 26-27, 2012

Procedures for 2009 and Subsequent Model Zero-Emission Vehicles and Hybrid

Electric Vehicles, Inin the Passenger Car, Light-Duty Truck, and Medium-Duty Vehicle

Classes” shall not apply.

4.4.4. The Executive Officer may use any of the following battery

state-of-charge levels for purposes of either certification confirmatory or in-use

compliance testing of such vehicles,

4.4.5. As specified in section II.B.4.4.2.

4.4.6. If applicable, at the level approved under section II.B.4.4.2.1.

4.4.7. If applicable, at any level in-between the levels indicated by

sections II.B.4.4.2. and II.B.4.4.2.1.

4.4.8. In lieu of performing the vehicle drivedown step specified in

section II.B.4.4., a manufacturer may, with advance Executive Officer approval,

optionally elect to bench purge the canister. Approval by the Executive Officer shall be

based upon assurance that the canister will be bench purged by an equivalent volume 

of air corresponding to a consumption of 85%, or less as determined by the

manufacturer, of the manufacturers’ nominal fuel tank capacity, and that the

characteristics of the purge flow through the canister, such as flow rates, shall be

representative of flow that occurs under the specified vehicle drivedown UDDS cycles.

4.4.9. The canister shall be isolated from its system after

completing the canister-purging procedures.

4.4.10. When the optional canister bench purge specified in section 

II.B.4.4.8. is elected, the 10-percent fuel tank volume specified in 40 CFR 86.153-98(e), 

may be established by using a measured drain of the fuel tank, within 60 minutes of 

completing the canister bench purge.

4.5. Subparagraph (e) [No change.]

5. §86.154-98 Measurement procedure; refueling test [August 23, 1995] [No 

change].

5.1. Subparagraphs (a) through (d) [No change.]

5.2. Amend subparagraph (e) (6) to include: If using California

certification fuel, the fuel shall be dispensed at a temperature of 79±1.5 0F (26.1±0.8 0C)

and at a dispensing rate of 9.8±0.3 gal/min (37.1±1.1 liter/min).

6. §86.155-98 Records required; refueling test [April 6, 1994] [No change].

7. §86.156-98 Calculations [April 6, 1994] [No change.]