Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION .
Scheme 69
Scheme 70
Scheme 71
- Turn the ignition switch to ON (II).
- Check the MAP SENSOR in the DATA LIST with the HDS. Is about 3 kPa (1.0 in.Hg, 26 mmHg), or 0.23 V or less indicated? YES: Go to step 3 . NO: Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and the ECM/PCM.
- Turn the ignition switch to LOCK (0).
- Disconnect the MAP sensor 3P connector.
- Turn the ignition switch to ON (II).
- Check the MAP SENSOR in the DATA LIST with the HDS. Is about 3 kPa (1.0 in.Hg, 26 mmHg), or 0.23 V or less indicated? YES: Go to step 12 . NO: Go to step 7 .
- Measure the voltage between MAP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES: Go to step 16 . NO: Go to step 8 .
- Turn the ignition switch to LOCK (0).
- Jump the SCS line with the HDS.
- Disconnect ECM/PCM connector C (49P).
- Check for continuity between ECM/PCM connector terminal C13 and MAP sensor 3P connector terminal No. 1. Is there continuity? YES: Go to step 23 . NO: Repair open in the wire between the ECM/PCM (C13) and the MAP sensor, then go to step 18 .
- Turn the ignition switch to LOCK (0).
- Jump the SCS line with the HDS.
- Disconnect ECM/PCM connector C (49P).
- Check for continuity between MAP sensor 3P connector terminal No. 2 and body ground. Is there continuity? YES: Repair short in the wire between the ECM/PCM (C11) and the MAP sensor, then go to step 18 . NO: Go to step 23 .
- Turn the ignition switch to LOCK (0).
- Replace the MAP sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-320426-S41968704082009071400000) ).
- Reconnect all connectors.
- Turn the ignition switch to ON (II).
- Reset the ECM/PCM with the HDS.
- Do «ECM/PCM IDLE LEARN PROCEDURE»(ref-320447-S03803966382009071400000) .
- Check for Pending or Confirmed DTCs with the HDS. Is DTC P0107 indicated? YES: Check for poor connections or loose terminals at the MAP sensor 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.
- Reconnect all connectors.
- Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-320426-S22945234462009071400000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-320425-S18610926012009071400000) ).
- Check for Pending or Confirmed DTCs with the HDS. Is DTC P0107 indicated? YES: Check for poor connections or loose terminals at the MAP sensor and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-320425-S18610926012009071400000) ), 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 (see «ECM/PCM REPLACEMENT»(ref-320426-S21651098282009071400000) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.