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DTC P0603: Engine Control Module (ECM)/Powertrain Control Module (PCM) Internal Circuit Malfunction (Keep Alive Memory (KAM) Error)
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DTC P0603: Engine Control Module (ECM)/Powertrain Control Module (PCM) Internal Circuit Malfunction (Keep Alive Memory (KAM) Error): Notes
Fig 1: ECM/PCM Internal Malfunction Circuit Diagram