DTC Troubleshooting

DTC Troubleshooting: P2135

DTC P2135: TP Sensor A/B Incorrect Voltage Correlation

CAUTION
Do not insert your fingers into the installed throttle body when you turn the ignition switch to ON (II) or while the ignition switch is ON (II). If you do, you will seriously injure your fingers if the throttle valve is activated.

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Do the ETCS TEST in the INSPECTION MENU with the HDS.

4. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2135 indicated?
YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body and the PCM.


5. Turn the ignition switch to LOCK (0).

6. Remove the charge air cooler Service and Repair and intake air duct (charge air cooler outlet tube). Service and Repair

7. Turn the ignition switch to ON (II).

8. Visually check the throttle valve operation while you clear the DTC with the HDS.

Does the valve temporarily move to its fully closed position?
YES - Go to step 15.

NO - Go to step 9.


9. Turn the ignition switch to LOCK (0).

10. Jump the SCS line with the HDS.

11. Disconnect PCM connector C (44P).

12. Check for continuity between PCM connector terminals C20 and C21.

Is there continuity?
YES - Go to step 13.

NO - Go to step 22.






13. Disconnect the throttle body 6P connector.

14. Check for continuity between PCM connector terminals C20 and C21.

Is there continuity?
YES - Repair short in the wires between the PCM C20 (TPSA line) and the C21 (TPSB line), then go to step 17.

NO - Go to step 15.






15. Turn the ignition switch to LOCK (0).

16. Replace the throttle body. Removal and Replacement

17. Reconnect all connectors.

18. Turn the ignition switch to ON (II).

19. Reset the PCM with the HDS.

20. Do the PCM idle learn procedure. PCM Idle Learn Procedure

21. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2135 indicated?
YES - Check for poor connections or loose terminals at the throttle body and the PCM, then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.


22. Reconnect all connectors.

23. Update the PCM if it does not have the latest software, PCM Update or substitute a known-good PCM. Initial Inspection and Diagnostic Overview

24. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2135 indicated?
YES - Check for poor connections or loose terminals at the throttle body and the PCM. If the PCM was updated, substitute a known-good PCM, Initial Inspection and Diagnostic Overview then recheck. If the PCM was substituted, go to step 1.

NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. Service and Repair If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.