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 ECM.


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

6. Disconnect the intake air duct from the throttle body. Removal and Replacement

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 ECM connector C (44P).

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

Is there continuity?
YES - Repair short in the wires between the ECM connector terminals C20 (TPSA line) and 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 ECM with the HDS.

20. Do the ECM idle learn procedure. ECM 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 ECM, 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 ECM if it does not have the latest software, ECM Update or substitute a known-good ECM. 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 ECM. If the ECM was updated, substitute a known-good ECM, Initial Inspection and Diagnostic Overview then recheck. If the ECM was substituted, go to step 1.

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