ECU - State Emission Test Failure

91acura05

October 28, 1991

BULLETIN NO.
91-046


YEAR MODEL VIN APPLICATION
1986-1987 INTEGRA ALL


State Emission Test Failure


SYMPTOM

Some 1986-1987 Integras may fail the tailpipe emission test of certain states' inspection and maintenance programs.


PROBABLE CAUSE

Abnormally high under-hood temperature due to high ambient temperature causes an interruption of the emission control feedback system at idle.

NOTE: All Acura automobiles meet the E.P.A. and California emission standards when tested under the E.P.A. certification procedure.


CORRECTIVE ACTION

Check to make sure that the emission control system key areas are functioning properly by performing the following tests:

1. Prior to testing, drive the car until the radiator fans come on. This ensures proper operation of the catalytic converter.

2. Check the ECU for any stored failure codes, and repair as necessary. Refer to page 11-10 of the service manual.

3. Connect a fuel pressure gauge, and verify that the fuel pressure is within the standards. Refer to page 11-51 of the service manual.

4. If the car still fails the test after completing any necessary repairs, install the ECU listed in PARTS INFORMATION.

5. If the car continues to fail the test even after installing the new ECU, then contact Tech Line for further assistance.


PARTS INFORMATION

Electronic Control Unit (ECU):

49 State - M/T P/N 37820-PG7-405RM
49 State - A/T P/N 37820-PG7-406RM

California - M/T P/N 37820-PG7-407RM
California - A/T P/N 37820-PG7-408RM


WARRANTY INFORMATION

In warranty: The normal warranty applies.

Out-of-warranty: Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Service Manager. You must request consideration, and get the DSM's decision, before starting work.

Operation
Description Flat Rate
Number Time

123551 Drive the car, check the 0.7 hour
ECU for codes, and
check fuel pressure.

121100 Replace the ECU. 0.3 hour


Failed P/N: Use the part number of the ECU
being tested or replaced.

Defect code: 068

Contention code: D99