Code No. P2138: Accelerator Pedal Position Sensor (Main and Sub) Range/Performance Problem


OPERATION



FUNCTION



TROUBLE JUDGMENT


Check Conditions
Judgment Criteria

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Connector check: B-115 accelerator pedal position connector

Q. Is the check result normal?

Go to Step 2 .

Repair or replace the connector.

STEP 2. Check accelerator pedal position sensor itself.

  • Check accelerator pedal position sensor itself (Refer to ).

Q. Is the check result normal?
Go to Step 3 .
Replace the accelerator pedal assembly.

STEP 3. Perform resistance measurement at B-115 accelerator pedal position sensor connector.


  • Disconnect connector, and measure at harness side.
  • Resistance between terminal No. 4 and earth.
OK: Continuity (2 Ω or less)

Q. Is the check result normal?

Go to Step 7 .

Go to Step 4 .

STEP 4. Connector check: A-35 engine-ECU connector

Q. Is the check result normal?

Go to Step 5 .

Repair or replace the connector.

STEP 5. Check harness between B-115 (terminal No. 4) accelerator pedal position sensor connector and A-35 (terminal No. 84) engine-ECU connector.



  • Check earthing line for damage.

Q. Is the check result normal?

Go to Step 6 .

Repair the damaged harness wire.

STEP 6. M.U.T.-III diagnosis code.

  • Reconfirmation of diagnosis code.

Q. Is the diagnosis code set?
Replace the engine-ECU then perform the variant coding (Refer to GROUP 00 - Precautions Before Service - How to Perform Variant Coding ).
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).

STEP 7. Perform resistance measurement at B-115 accelerator pedal position sensor connector.


  • Disconnect connector, and measure at harness side.
  • Resistance between terminal No. 5 and earth.
OK: Continuity (2 Ω or less)

Q. Is the check result normal?

Go to Step 10 .

Go to Step 8 .

STEP 8. Connector check: A-35 engine-ECU connector

Q. Is the check result normal?

Go to Step 9 .

Repair or replace the connector.

STEP 9. Check harness between B-115 (terminal No. 5) accelerator pedal position sensor connector and A-35 (terminal No. 87) engine-ECU connector.



  • Check earthing line for damage.

Q. Is the check result normal?

Go to Step 6 .

Repair the damaged harness wire.

STEP 10. Connector check: A-35 engine-ECU connector

Q. Is the check result normal?

Go to Step 11 .

Repair or replace the connector.

STEP 11. Check harness between B-115 (terminal No. 2) accelerator pedal position sensor connector and A-35 (terminal No. 85) engine-ECU connector.



  • Check power supply line for damage.

Q. Is the check result normal?

Go to Step 12 .

Repair the damaged harness wire.

STEP 12. Check harness between B-115 (terminal No. 1) accelerator pedal position sensor connector and A-35 (terminal No. 86) engine-ECU connector.



  • Check power supply line for damage.

Q. Is the check result normal?

Go to Step 13 .

Repair the damaged harness wire.

STEP 13. Check harness between B-115 (terminal No. 3) accelerator pedal position sensor connector and A-35 (terminal No. 83) engine-ECU connector.



  • Check output line for damage.

Q. Is the check result normal?

Go to Step 14 .

Repair the damaged harness wire.

STEP 14. Check harness between B-115 (terminal No. 6) accelerator pedal position sensor connector and A-35 (terminal No. 88) engine-ECU connector.



  • Check output line for damage.

Q. Is the check result normal?

Go to Step 6 .

Repair the damaged harness wire.