P1437

DTC P1437 (41): MPI Module Short Circuit
1. Reset the MCM.
2. Turn the ignition switch OFF.
3. Turn the ignition switch ON (II).
Is DTC P1437 indicated?
YES - Go to step 4.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MPI module and at the MCM.
4. Turn the ignition switch OFF.
5. Turn the battery module switch OFF.
6. Remove the IPU lid.





7. Remove the PDU cover B (A).
8. Remove the motor power cables from the busbar.





9. Measure resistance between body ground and the motor power cable terminals (A) individually.
Is there more than 350 k Ohms?
YES - Update the MCM if it does not have the latest software, or substitute a known-good MCM, then recheck. If the symptom/indication goes away with a known-good MCM, replace the original MCM.
NO - Go to step 10.
10. Remove the motor power cables from the motor stator terminals.





11. Measure resistance between motor power cable terminals (A) and body ground individually.
Is there less than 350 k Ohms
YES - Replace the motor stator.
NO - Replace the motor power cable.