MIL ON - DTC P1441 EVAP System Flow

99-036

July 6, 1999

Applies To:
1996-97 Passport - LX and EX

MIL ON With DTC P1441 Stored

SYMPTOM
After starting a cold engine in a warm garage, and then driving out into freezing weather, DTC P1441 (EVAP system flow during non-purge) is stored, and the MIL comes on.

PROBABLE CAUSE
During evaporative system self-diagnostics, a rapid temperature change in the fuel tank sets a false DTC.

CORRECTIVE ACTION
Update the PCM software with the Smart Cable.

REQUIRED TOOLS AND EQUIPMENT
PGM Tester with SN902 or later software.

For the other tools and equipment you'll need to update the PCM software, see Service Bulletin 99-005,Updating the Passport PCM, filed under Tools.





WARRANTY CLAIM INFORMATION

In warranty: The normal warranty applies.

Operation number: 121003
Flat rate time: 0.3 hour
Defect code: 039
Contention code: C99
Skill level: Repair Technician

Out of warranty: Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.

REPAIR PROCEDURE

1. Retrieve the PCM broadcast code with the PGM Tester or the Smart Cable (see Service Bulletin 99-005).

2. Compare the code you retrieved with the codes in the list below.

^ If the code is in the list, go to step 3.

^ If the code is not in the list, the PCM software has already been updated. Use the '96-97 Passport Fuel and Emissions Manual to troubleshoot the cause of DTC P1441.

PCM Broadcast Codes:

BNTT, BNTY
BTFJ
BUWP, BUWT, BUWU
BXCK, BXCL, BXCM, BXJW, BXTB, BXTC
BZLZ, BZMA, BZMB
CDMX, CDMZ, CDNM, CDNN, CDNP

3. Update the PCM software with the Smart Cable. For instructions, see Service Bulletin 99-005, Updating the Passport PCM, filed under Tools.





Disclaimer