Engine Controls - DTC P2138 Stored/MIL ON

FORENZA

Section Title: Engine
TSB No. TS 23 08020R

Division: Automotive
Category: Technical

SUBJECT:
COUNTER-MEASURE PROCEDURE FOR DTC P2138

MODEL(S):
FORENZA, FORENZA WAGON, RENO (RQ420)

YEAR:
2006~2008

CONDITION:

MIL light is on, DTC P2138 stored, as reported by the vehicle owner.

CAUSE:

Failure of the connector and/or wiring circuits between the ECM and the Accelerator Pedal Position Sensor.

CORRECTION:

Please refer to, and follow, the diagnostic, repair, and precautionary steps, as outlined in the counter-measure procedure in this bulletin.





PART(S) INFORMATION:





WARRANTY INFORMATION

Repair Procedure

1. Connect the Tech 2 scan tool to the vehicle DLC (Data Link Connector), and access DTC's stored in the ECM (Engine Control Module). Is the DTC P2138? If yes, continue to step 2 of this instruction. If no, stop this instruction and refer to the Forenza Service Manual concerning the DTC found.

2. Make note of the customer's radio presets, disconnect the negative battery terminal.





3. Inspect the following harness connectors and wiring circuits associated with DTC P2138 (see fig.1), for any damage and/or improper seating/fastening.





4. Inspect all six terminals at the APM (Accelerator Pedal Module) as illustrated in fig. 2, looking for bent/deformed terminals, corrosion, etc., and clean or repair as needed and proceed to step 5.





5. Inspect the Body to Instrument Panel harness connector (94 pin inline connector) as illustrated in fig. 3, for any damage and/or improper seating/fastening, looking for bent/deformed terminals, corrosion, etc., and clean or repair as needed and proceed to step 6.





6. Inspect the Engine to Body harness connector (1 6 pin inline connector) as illustrated in fig. 4, for any damage and/or improper seating/fastening, looking for bent/deformed terminals, corrosion, etc., and clean or repair as needed and proceed to step 7.





7. Inspect the six terminals at the ECM-C (64 pin connector), illustrated in fig. 2, looking for bent/deformed terminals, corrosion, etc., and clean or repair as needed and proceed to step 8.

8. If there are no problems with any of the connectors, or their terminals, apply Stabilant 22, Electric Contact Enhancer, or equivalent (see list of AKA marketing names below, and MSDS, this is not a dielectric grease) and then re-connect the harnesses.

9. In the event that an issue is found with the harness that cannot be repaired (this is rare), the harness may need to be replaced.

10. Using the Tech 2 scan tool, clear the DIG and road test the vehicle.





Stabilant 22 is also packaged and sold as the following product lines, many of which may be readily available at local parts stores and jobbers.