Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
Scheme 377
Scheme 378
Scheme 379
Scheme 380
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Slowly press the accelerator pedal to the floor.
- Check for Pending or Confirmed DTCs with the HDS. Is DTC P2118 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.
- Turn the ignition switch to LOCK (0).
- Jump the SCS line with the HDS.
- Disconnect the throttle body 6P connector.
- Disconnect PCM connector C (44P).
- Check for continuity between PCM connector terminal C13 and throttle body 6P connector terminal No. 4. Is there continuity? YES -Go to step 10. NO -Repair an open in the wire between the throttle body and the PCM (C13), then Go to step 14 .
- Check for continuity between throttle body 6P connector terminals No. 5 and No. 6. Is there continuity? YES -Repair a short in the wires between throttle body 6P connector terminals No. 5 (ETCS- line) and No. 6 (ETCS+ line), then Go to step 14 . NO -Go to step 11.
- Check for continuity between body ground and throttle body 6P connector terminals No. 5 and No. 6 individually. Is there continuity? YES -Repair a short in the wire between the throttle body 6P connector and body ground, then Go to step 14 . NO -Go to step 12.
- At the throttle body side, measure the resistance between throttle body 6P connector terminals No. 5 and No. 6 with the throttle fully closed. Is there about 1.0 ohms or less? YES -Go to step 13. NO -Go to step 22 .
- Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-360274-S28268658552010042800000) ).
- Reconnect all connectors.
- Turn the ignition switch to ON (II).
- Reset the PCM with the HDS.
- Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360285-S23715037572010042800000) ).
- Turn the ignition switch to LOCK (0).
- Turn the ignition switch to ON (II).
- Slowly press the accelerator pedal to the floor.
- Check for Pending or Confirmed DTCs with the HDS. Is DTC P2118 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 Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
- Reconnect all connectors.
- Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ).
- Turn the ignition switch to LOCK (0).
- Turn the ignition switch to ON (II).
- Slowly press the accelerator pedal to the floor.
- Check for Pending or Confirmed DTCs with the HDS. Is DTC P2118 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 (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ), then Go to step 24 . 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 (see «PCM REPLACEMENT»(ref-360284-S39322714792010042800000) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.