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 in 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 Pending or Confirmed 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/PCM.


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

6. Disconnect the intake air duct from the throttle body.

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

8. Clear the DTC with the HDS.

9. Visually check the throttle valve operation.

Does the valve temporarily move to its fully closed position?
YES - Go to step 16.

NO - Go to step 10.


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

11. Jump the SCS line with the HDS.

12. Disconnect ECM/PCM connector C (44P).

13. Check for continuity between ECM/PCM connector terminals C20 and C21.

Is there continuity?
YES - Go to step 14.

NO - Go to step 23.






14. Disconnect the throttle body 6P connector.

15. Check for continuity between ECM/PCM connector terminals C20 and C21.

Is there continuity?
YES - Repair short in the wires between the ECM/PCM connector terminals C20 (TPSA line) and C21 (TPSB line), then go to step 18.

NO - Go to step 16.






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

17. Replace the throttle body. Removal and Replacement

18. Reconnect all connectors.

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

20. Reset the ECM/PCM with the HDS.

21. Do the ECM/PCM idle learn procedure. ECM/PCM Idle Learn Procedure

22. Check for Pending or Confirmed DTCs with the HDS.

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

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


23. Reconnect all connectors.

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

25. Check for Pending or Confirmed DTCs with the HDS.

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

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