Counter-Measure Procedure For DTC P2138 (TS 23 06110)

COUNTER-MEASURE PROCEDURE FOR DTC P2138

TECHNICAL SERVICE BULLETIN

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

Part Number	Description	Qty.	Notes
49400-85Z00	Pedal Assy, Accelerator	1	Do Not  replace the Accelerator Pedal Assy or the ECM, unless the failure is confirmed, such as physical damage to a terminal pin, or no signal detected in the circuit.

WARRANTY INFORMATION

Labor Operation	Description	Failed Part Number	Complaint Code	Defect Code	Labor Time
QC9999	Circuit inspection and repair	49400-85Z00	99	18	0.5 hrs.

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.
   Fig 1: Accelerator Pedal Position (APP) Sensor Circuit

   
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.
   Fig 2: APM Connector (Accelerator Pedal Module)

   
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.
   Fig 3: Body To Instrument Panel Harness Connector (94 Pin Inline Connector)

   
6. Inspect the Engine to Body harness connector (16 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.
   Fig 4: Engine To Body Harness Connector (16 Pin Inline Connector)

   
7. Inspect the six terminals at the ECM-C (64 pin connector), illustrated in Fig. 5  , looking for bent/deformed terminals, corrosion, etc., and clean or repair as needed and proceed to step 8.
   Fig 5: ECM-C (64 Pin Connector)

   
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 attached 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 DTC 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.

Product Line	Part Number	Retail locations
Carquest Auto Parts	52-1303	Carquest Auto Parts
Borg Warner Line	CL85	O'Reilly's Auto Parts, AutoZone, Pep Boys, Parts Plus
Echlin Line	CE-1	Napa Auto Parts
Standard Motor Products (Engine controls group, Remanufacturing Catalog)	SL5	AutoZone, Bumper to Bumper
Wurth USA	0893622	Wurth USA
G.P. Sorensen	LUB 5	Kragen Auto Parts
Neihoff	NL5	Unknown