Advanced Diagnostics

DTC P1437 (41): Motor Control Module (MCM) Circuit Shorted




General Description
The motor control module (MCM) detects a short circuit malfunction in the 3-phase section in the motor power inverter (MPI) module which is detected with the MPI module. When the MPI module short circuit condition occurs for a specified cycle within a set time, a malfunction is detected and a DTC is stored.




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




Enable Conditions

Malfunction Threshold
The MPI module is short circuited eight times within 25 seconds.

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.