DTC 62
DTC P0AE1 (62): Bypass Contactor Malfunction1. Turn the ignition switch ON (II).
2. Check for IMA system Temporary DTCs or DTCs with the HDS.
Is DTC P0A78 (32) or P1570 (66) indicated?
YES - Do the troubleshooting for DTC P0A78 (32), or DTC P1570 (66).
NO - Go to step 3.
3. Compare the MPI VOLTAGE, and the TOTAL VOLTAGE OF ALL IMA BATTERY MODULES in the DATA LIST with the HDS. is there more than 21.37 V difference between MPI VOLTAGE and TOTAL VOLTAGE OF ALL IMA BATTERY MODULES?
YES - Go to step 4.
NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the high voltage contactor, the bypass contactor, the DC-DC converter, and the BCM module.
4. Check the battery module switch.
Is the battery module switch ON?
YES - Go to step 5.
NO - Turn the ignition switch ON (II), then turn battery module switch ON, and go to step 22.
5. Turn the ignition switch OFF.
6. Turn the battery module switch OFF.
7. Remove the IPU lid.
8. Turn the battery module switch ON.
9. Measure voltage between battery module terminals + (A) and - (B).
Is there more than 135 V?
YES - Go to step 10.
NO - Replace the battery module, then go to step 21.
10. Turn the battery module switch OFF, and disconnect the DC-DC converter 4P connector.
11. Turn the battery module switch ON.
12. Turn the ignition switch ON (II).
13. Compare the MPI VOLTAGE, and the TOTAL VOLTAGE OF ALL IMA BATTERY MODULES in the DATA LIST with the HDS.
Is there more than 21.37 V difference between MPI VOLTAGE and TOTAL VOLTAGE OF ALL IMA BATTERY MODULES?
YES - Go to step 14.
NO - Replace the DC-DC converter, then go to step 22.
14. Turn the ignition switch OFF.
15. Disconnect BCM module connector A (40P).
16. Check for continuity between BCM module connector terminals A13 and A28.
Is there continuity?
YES - Go to step 19.
NO - Go to step 17.
17. Disconnect the junction board 12P connector.
18. Check for continuity between these terminals: BCM module connector terminal A13 and junction board 12P connector terminal No. 1. BCM module connector terminal A28 and junction board 12P connector terminal No. 2.
Is there continuity?
YES - Replace the battery module, then go to step 22.
NO - Repair open in the wire between the junction board 12P connector and the BCM module (A13, A28), then go to step 22.
19. Check for continuity between BCM module connector terminal A13 and body ground.
Is there continuity?
YES - Go to step 20.
NO - Replace the battery module, then go to step 28.
20. Disconnect the junction board 12P connector.
21. Check for continuity between BCM module connector terminal A13 and body ground.
Is there continuity?
YES - Repair short in the wire between the junction board 12P connector and the BCM module (A13), then go to step 22.
NO - Replace the battery module.
22. Turn the ignition switch OFF.
23. Reconnect all connectors.
24. Reinstall the IPU lid, then turn the battery module switch ON.
25. Turn the ignition switch ON (II).
26. Reset the BCM module and MCM with the HDS.
27. Check for IMA system Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0AE1 (62) is indicated, check for poor connections or loose terminals at the high voltage connector, the bypass contactor, the DC-DC converter, the MCM, and the BCM module, 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.
28. Reinstall the IPU lid, then turn the battery module switch ON.
29. Update the BCM module if it does not have the latest software, or substitute a known-good BCM module.
30. Check for IMA system Temporary DTCs or DTCs with the HDS.
Is DTC P0AE1 (62) indicated?
YES - Check for poor connections or loose terminals at the high voltage contactor, the bypass contactor, the DC-DC converter, the MCM, and the BCM module. If the BCM module was updated, substitute a known-good BCM module, then recheck. If the BCM module was substituted, go to step 31.
NO - If the BCM module was updated, troubleshooting is complete. If the BCM module was substituted, replace the original BCM module. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
31. Update the MCM if it does not have the latest software, or substitute a known-good MCM.
32. Check for IMA system Temporary DTCs or DTCs with the HDS.
Is DTC P0AE1 (62) indicated?
YES - Check for poor connections or loose terminals at the high voltage contactor, the bypass contactor, the DC-DC converter, the MCM, and the BCM module. If the MCM was updated, substitute a known-good MCM, then recheck. If the MCM was substituted, go to step 1.
NO - If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.