Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
- Turn the ignition switch ON (II).
- Clear the DTC with the HDS (see «HDS CLEAR COMMAND»(ref-220569-S34447482972006022000000) ).
- Check for Temporary DTCs or DTCs with the HDS. Is DTC P2610 indicated? YES- Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see «ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING»(ref-220569-S23624043112006022000000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «MAP SENSOR REPLACEMENT»(ref-220570-S17955277902006022000000) ). NO- Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the ECM/PCM.