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 Pending or Confirmed 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 if it does not have the latest software (see «ECM UPDATE»(ref-355119-S38923566472010012000000) ), or substitute a known- good ECM (see «SUBSTITUTING THE ECM»(ref-379880-S34678618312010121600000) ).
- Turn the ignition switch to LOCK (0).
- Turn the ignition switch to ON (II).
- Wait 40 seconds.
- Check for Pending or Confirmed or DTCs with the HDS. Is DTC P0606 indicated? YES -If the ECM was updated, substitute a known- good ECM (see «SUBSTITUTING THE ECM»(ref-379880-S34678618312010121600000) ), then go to step 8 . If the ECM was substituted, go to step 1 . NO -If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM (see «ECM REPLACEMENT»(ref-355119-S26942562032010012000000) ). If any other Pending or Confirmed or DTCs are indicated, go to the «INDICATED DTC'S TROUBLESHOOTING»(ref-355119-S39784062052010012000000) .