IMA System (MCM)

Advanced Diagnostics - DTC P0562 (94): Motor Control Module (MCM) Power Source Circuit Unexpected Voltage






General Description
The motor control module (MCM) stores the actual voltage value of the back-up power source that is continuously supplied through the VBU terminal when the ignition switch is in LOCK (0). When the input voltage to the MCM is considerably lower than the normal range, the MCM cannot store the actual value. In that case, an open or short to GND in the signal wire is detected and a DTC is stored.

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






Enable Conditions






Malfunction Threshold
The VBU terminal voltage of the MCM is 4 V or less for at least 2 seconds.

Diagnosis Details

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

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.