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 to ON (II).
- Clear the DTC with the HDS.
- Turn the ignition switch to LOCK (0).
- Turn the ignition switch to ON (II).
- Wait 40 seconds.
- Check for Temporary DTCs or DTCs with the HDS. Is DTC P0606 indicated? YES -Go to step 7. NO -Intermittent failure, the system is OK at this time.
- Update the ECM/PCM if it does not have the latest software (see ECM/PCM UPDATE ), or substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).
- Turn the ignition switch to LOCK (0).
- Turn the ignition switch to ON (II).
- Wait 40 seconds.
- Check for Temporary DTCs or DTCs with the HDS. Is DTC P0606 indicated? YES -If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 8 . 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 ). If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.