P0603 (60)

DTC P0603 (60): Motor Control Module (MCM) Internal Circuit Keep Alive Memory (KAM) Error




General Description
The motor control processor stores the control data for the keep-alive memory (KAM).

The motor control processor compares the data input to and read out from the KAM, and when the data does not match, a malfunction is detected and a DTC is stored.




Monitor Execution, Sequence, Duration, DTC Type, OBD Status




Enable Conditions

Malfunction Threshold
One of these conditions occurs.
- The data input to or read out from the KAM is bad.
- The check sum of the data readout is abnormal three times.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the PCM and MCM memory.

Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.