DTC Troubleshooting

DTC Troubleshooting: P0603, P0603, P062F, P062F

DTC P0603:

ECM/PCM Internal Control Module Keep Alive Memory (KAM) Error ('06-08 models)

DTC P062F:

ECM/PCM Internal Control Module Keep Alive Memory (KAM) Error ('09-11 models)

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
- Information marked with an asterisk (*) applies to the '06-08 models.
- Information marked with a double asterisk (**) applies to the '09-11 models.

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0603* (P062F)** indicated?

YES -

Go to step 4.

NO -

Intermittent failure, the system is OK at this time.�

4. Update the ECM/PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good ECM/PCM.

5. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0603* (P062F)** indicated?

YES -

If the ECM/PCM was updated, substitute a known-good ECM/PCM, 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 Service and Repair. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.�