DTC Troubleshooting

Control System DTCs

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 How To Troubleshoot The Fuel And Emissions Systems.

1. Problem verification:

Problem verification
-1. Turn the ignition switch to ON (II).

-2. Clear the DTC with the HDS.

-3. Do the ETCS TEST with the HDS.

-4. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2135 indicated?
-YES- The failure is duplicated. Go to step 2.
-NO- Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body and the ECM.

2. Throttle body operation check:

Throttle body operation check
-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the intake air duct from the throttle body.

-3. Turn the ignition switch to ON (II).

-4. Clear the DTC with the HDS.

-5. Visually check the throttle valve operation.

Does the valve temporarily move to its fully closed position?
-YES- Replace the throttle body Removal and Replacement, then do the repair verification.
-NO- Go to step 3.

3. Determine possible failure area (ECM, others):

Determine possible failure area (ECM, others)
-1. Turn the ignition switch to LOCK (0).

-2. Jump the SCS line with the HDS.

-3. Disconnect the following connector.





-4. Check for continuity between test points 1 and 2.









Is there continuity?
-YES- Go to step 4.
-NO- Update the ECM ECM/PCM Update if it does not have the latest software, or substitute a known-good ECM Service and Repair, then do the repair verification.

4. Shorted wire check (TH_1 line to TH_2 line):

Shorted wire check (TH_1 line to TH_2 line)
-1. Disconnect the following connector.





-2. Check for continuity between test points 1 and 2.









Is there continuity?
-YES- Repair a short in the TH_1 wire to TH_2 wire between ECM connector terminals C30 (TH_1 line) and C31 (TH_2 line), then do the repair verification.
-NO- The TH_1 and TH_2 wires are OK. Replace the throttle body Removal and Replacement, then do the repair verification.

Repair verification:

-1. Turn the ignition switch to LOCK (0).

-2. Reconnect all connectors.

-3. Turn the ignition switch to ON (II).

-4. Reset the ECM with the HDS How To Troubleshoot The Fuel And Emissions Systems.

-5. Do the ECM idle learn procedure ECM/PCM Idle Learn Procedure.

-6. 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. If the ECM was updated, substitute a known-good ECM Service and Repair, then recheck. If the ECM was substituted, go to step 1.
-NO- Troubleshooting is complete. If the ECM was substituted, replace the original ECM Service and Repair. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.