MCM Internal Circuit KAM Error

DTC Troubleshooting: P0603 (60)

DTC P0603 (60):

MCM Internal Circuit KAM Error

NOTE: Before you troubleshoot, record all freeze data, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.

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

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

Is DTC P1629 (79) indicated?

YES -

Do the troubleshooting for DTC P1629 (79) P1629.

NO -

Go to step 3.

3. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.

4. Monitor the OBD STATUS for DTC P0603 (60) in the DTCs MENU with the HDS.

Does the screen indicate FAILED?

YES -

Go to step 5.

NO -

If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MCM. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.

5. Update the MCM if it does not have the latest software Testing and Inspection, or substitute a known-good MCM Initial Inspection and Diagnostic Overview.

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

Is DTC P0603 (60) indicated?

YES -

Check for poor connections or loose terminals at the MCM. If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then recheck. If the MCM was substituted, go to step 1.

NO -

Go to step 7.

7. Monitor the OBD STATUS for DTC P0603 (60) in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES -

If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM MCM Replacement. If any other Pending or Confirmed DTCs were indicated in step 6, go to the indicated DTC's troubleshooting.�

NO -

If the screen indicates FAILED, check for poor connections or loose terminals at the MCM. If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then recheck. If the MCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.