DTC Troubleshooting: P0603 (131)
|DTC P0603:||ECM/PCM Internal Control Module Keep Alive Memory (KAM) Error|
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
|1.||Turn the ignition switch ON (II).|
|2.||Clear the DTC with the HDS.|
|3.||Check for Temporary DTCs or DTCs with the HDS.|
Are any Temporary DTCs or DTCs indicated?
YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n
NO - Intermittent failure, system is OK at this time.n