Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). This DTC is indicated when an ECM/PCM update is not completed. Do not turn the ignition switch to ACC (I) or to LOCK (0) while updating the ECM/PCM. If you do, the ECM/PCM can be damaged.
- Do the ECM/PCM update procedure (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ).
- Check for Temporary DTCs or DTCs with the HDS. Is DTC P0602 indicated? YES -Replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). NO -The update is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.