DTC Troubleshooting
DTC Troubleshooting: P0AE1 (62)
DTC P0AE1 (62):
Bypass Connector Malfunction
CAUTION
Be careful not to touch high voltage cables and parts when you turn the battery module switch ON, or while the battery module switch is ON.
NOTE: Before you troubleshoot, record all freeze data, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
1. Turn the ignition switch to ON (II).
2. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0A78 (32) or P1570 (66) indicated?
YES -
Do the troubleshooting for DTC P0A78 (32) P0A78, or DTC P1570 (66) P1570.
NO -
Go to step 3.
3. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
4. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0AE1 (62) indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the junction board, the DC-DC converter, the MCM, and the BCM module.�
5. Turn the ignition switch to LOCK (0).
6. Turn the battery module switch OFF High Voltage Safety.
7. Remove the IPU lid IPU Lid Removal/Installation.
8. Check the busbars (A) on the DC-DC converter and the MCM for bending or damaged insulation.
Are the busbars OK?
YES -
Go to step 9.
NO -
Replace the busbar, then go to step 29.
9. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
10. Turn the battery module switch ON High Voltage Safety.
NOTE: Wear insulated gloves to protect yourself from electrical shock.
11. Turn the ignition switch to ON (II), and listen for a clicking sound from the relay inside the battery module.
Is there a clicking sound?
YES -
Go to step 12.
NO -
Go to step 19.
12. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
13. Turn the ignition switch to LOCK (0).
14. Turn the ignition switch to ON (II), then measure the voltage between the battery module terminals (A).
Is there momentary voltage when the ignition switch is turned to ON (II)?
YES -
Go to step 15.
NO -
Replace the battery module Service and Repair, then go to step 29.
15. Turn the ignition switch to LOCK (0).
16. Remove the DC-DC converter Service and Repair.
17. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
18. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0AE1 (62) indicated?
YES -
Go to step 41.
NO -
Replace the DC-DC converter Service and Repair, then go to step 29.
19. Disconnect BCM module connector A (40P).
20. Measure the resistance between BCM module connector terminals A13 and A28.
Is there 92.7-113.3 Ohms?
YES -
Go to step 26.
NO -
Go to step 21.
21. Measure the resistance between BCM module connector terminals A13 and A28.
Is it lower (NO) or higher (YES) than a 92.7-113.3 Ohms?
YES -
Go to step 24.
NO -
Go to step 22.
22. Disconnect the junction board 12P connector.
23. Check for continuity between BCM module connector terminals A13 and A28.
Is there continuity?
YES -
Repair short in the wire between the junction board 12P connector and the BCM module (A13, A28) then go to step 30.
NO -
Replace the battery module Service and Repair, then go to step 30.
24. Disconnect the junction board 12P connector.
25. Check for continuity between these terminals:
- BCM module connector terminal A13 and junction board 12P connector terminal No. 7.
- BCM module connector terminal A28 and junction board 12P connector terminal No. 2.
Is there continuity?
YES -
Replace the battery module Service and Repair, then go to step 30.
NO -
Repair open in the wire between the junction board 12P connector and the BCM module (A13, A28), then go to step 30.
26. Check for continuity between BCM module connector terminal A13 and body ground.
Is there continuity?
YES -
Go to step 27.
NO -
Check for poor connections or loose terminals at the junction board and the BCM module, then go to step 36.
27. Disconnect the junction board 12P connector.
28. 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 30.
NO -
Replace the battery module Service and Repair.
29. Turn the ignition switch to LOCK (0).
30. Reconnect all connectors.
31. Reinstall the IPU lid IPU Lid Removal/Installation, then turn the battery module switch ON High Voltage Safety.
32. Turn the ignition switch to ON (II).
33. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
34. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0AE1 (62) indicated?
YES -
Check for poor connections or loose terminals at the high voltage connector, the bypass connector, the DC-DC converter, the MCM, and the BCM module, then go to step 1.
NO -
Go to step 35.
35. Monitor the OBD STATUS for DTC P0AE1 (62) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES -
Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 34, go to the indicated DTC's troubleshooting.�
NO -
If the screen indicates FAILED, check for poor connections or loose terminals at the high voltage connector, the bypass connector, the DC-DC converter, the MCM, and the BCM module, then go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.
36. Reconnect all connectors.
37. Reinstall the IPU lid IPU Lid Removal/Installation, then turn the battery module switch ON High Voltage Safety.
38. Update the BCM module if it does not have the latest software Testing and Inspection, or substitute a known-good BCM module Initial Inspection and Diagnostic Overview.
39. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0AE1 (62) indicated?
YES -
Check for poor connections or loose terminals at the high voltage connector, the bypass connector, the DC-DC converter, the MCM, and the BCM module. If the BCM module was updated, substitute a known-good BCM module Initial Inspection and Diagnostic Overview, then recheck. If the BCM module was substituted, go to step 41.
NO -
Go to step 40.
40. Monitor the OBD STATUS for DTC P0AE1 (62) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES -
If the BCM module was updated, troubleshooting is complete. If the BCM module was substituted, replace the original BCM module Service and Repair. If any other Pending or Confirmed DTCs were indicated in step 39, go to the indicated DTC's troubleshooting.�
NO -
If the screen indicates FAILED, check for poor connections or loose terminals at the high voltage connector, the bypass connector, the DC-DC converter, the MCM, and the BCM module. If the BCM module was updated, substitute a known-good BCM module Initial Inspection and Diagnostic Overview, then recheck. If the BCM module was substituted, go to step 41. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.
41. Update the MCM if it does not have the latest software Testing and Inspection, or substitute a known-good MCM Initial Inspection and Diagnostic Overview.
42. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0AE1 (62) indicated?
YES -
Check for poor connections or loose terminals at the high voltage connector, the bypass connector, the DC-DC converter, the MCM, and the BCM module. If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then recheck. If the MCM was substituted, go to step 1.
NO -
Go to step 43.
43. Monitor the OBD STATUS for DTC P0AE1 (62) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES -
If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM MCM Replacement. If any other Pending or Confirmed DTCs were indicated in step 42, go to the indicated DTC's troubleshooting.�
NO -
If the screen indicates FAILED, check for poor connections or loose terminals at the high voltage connector, the bypass connector, the DC-DC converter, the MCM, and the BCM module. If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then recheck. If the MCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.