P1437
DTC P1437 (41): Motor Power Inverter (MPI) Module Short Circuit1. Turn the ignition switch ON (II).
2. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0AA6, P1440, and/or P15A5 indicated?
YES - Go to the indicated DTC's troubleshooting.
NO - Go to step 3.
3. Reset the MCM.
4. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1437 indicated?
YES - Go to step 7.
NO - Go to step 5.
5. Start the engine, and let it idle.
6. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1437 indicated?
YES - Replace the MPI module, then go to step 13.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MPI module and the MCM.
7. Turn the ignition switch OFF.
8. Turn the battery module switch OFF.
9. Remove the IPU lid.
10. Disconnect the battery module 16P connector.
11. Turn the ignition switch ON (II).
12. Measure voltage between body ground and MPI module 16P connector terminal No. 8.
Is there battery voltage?
YES - Replace the MPI module, then go to step 13.
NO - Repair connection in the MPI module connector. Repair open or short in the wire between +B IMA (10 A) fuse, MCM relay 2 and the MPI module, then go to step 13.
13. Turn the ignition switch OFF.
14. Reconnect all connectors.
15. Reinstall the IPU lid, then turn the battery module switch ON.
16. Turn the ignition switch ON (II).
17. Reset the MCM.
18. Start the engine, and let it idle.
19. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P1437 is indicated, check for poor connections or loose terminals at the MPI module and the MCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - Troubleshooting is complete.