IMA System

DTC P0603 (60): MCM Internal Circuit KAM Error
1. Turn the ignition switch ON (II).
2. Check for IMA system Temporary DTCs or DTCs with the HDS.
Is DTC P1629 (79) indicated?
YES - Do the troubleshooting for DTC P1629 (79).
NO - Go to step 3.

3. Clear the DTC with the HDS.
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, check for poor connections or loose terminals at the MCM, then go to step 1. If the screen indicates NOT COMPLETED, go to step 1 and recheck.

5. Update the MCM if it does not have the latest software, or substitute a known-good MCM.
6. Check for IMA system Temporary DTCs or DTCs with the HDS.
Is DTC P0603 (60) indicated?
YES - If the MCM was updated, substitute a known-good MCM, then recheck. If the MCM was substituted, go to step 1.
NO - If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.