DTC Troubleshooting
DTC Troubleshooting: P15A5 (85)
DTC P15A5 (85):
Motor Current Sensor Circuit Malfunction
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. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
3. Start the engine, and let it idle for 10 seconds.
4. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0A5E (24), P0A5F (25), P0A61 (26), P0A62 (27), P0A64 (28), P1440 (57), P0A3F (89), and/or P0A65 (29) indicated?
YES -
Go to the indicated DTC's troubleshooting.�
NO -
Go to step 5.
5. Test-drive the vehicle using wide open throttle for at least 2 seconds, then decelerate with light braking.
6. Monitor the OBD STATUS for DTC P15A5 (85) in the DTCs MENU with the HDS.
Does the screen indicate FAILED?
YES -
Go to step 7.
NO -
If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the motor power cable, the motor stator, and the MCM. If the screen indicates NOT COMPLETED, go to step 5.
7. Do the MOTOR ROTOR POSITION CALIBRATION in the IMA ADJUSTMENT MENU with the HDS.
Does the screen indicate COMPLETE?
YES -
Go to step 8.
NO -
Do the MOTOR ROTOR POSITION CALIBRATION Initial Inspection and Diagnostic Overview.�
8. At idle, individually check the U PHASE MOTOR CURRENT SENSOR, V PHASE MOTOR CURRENT SENSOR, and W PHASE MOTOR CURRENT SENSOR in the DATA LIST with the HDS.
Do the values vary from 0 A?
YES -
Go to step 27.
NO -
Go to step 9.
9. Turn the ignition switch to LOCK (0).
10. Turn the battery module switch OFF High Voltage Safety.
11. Remove the IPU lid IPU Lid Removal/Installation.
12. Lift the harness holder. Remove the PDU cover (A) and the motor power cables (B) from the MCM.
NOTE: Wrap the motor power cables with insulating tape.
13. Disconnect the motor power cable connector (A) from the motor stator High Voltage Safety.
NOTE:
- Disconnecting the motor power cable connector from the motor stator High Voltage Safety.
- If the motor power cable terminals are wet, dry them with a clean towel. Do not use compressed air.
14. Measure the resistance between motor power cable terminals A and B, B and C, and C and A individually.
NOTE: Use the 250 V range of your insulated resistance tester, and wear gloves.
Is there more than 350 kOhms?
YES -
Go to step 15.
NO -
Replace the motor power cable Service and Repair, then go to step 20.
15. Reconnect all connectors.
16. Reinstall the IPU lid IPU Lid Removal/Installation, then turn the battery module switch ON High Voltage Safety.
17. 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.
18. Test-drive the vehicle using wide open throttle for at least 2 seconds, then decelerate with light braking.
19. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P15A5 (85) indicated?
YES -
If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then go to step 18. If the MCM was substituted, replace the motor stator Removal and Replacement, then go to step 1.
NO -
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 are indicated, go to the indicated DTC's troubleshooting.�
20. Reconnect all connectors.
21. Reinstall the IPU lid IPU Lid Removal/Installation, then turn the battery module switch ON High Voltage Safety.
22. Turn the ignition switch to ON (II).
23. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
24. Test-drive the vehicle using wide open throttle for at least 2 seconds, then decelerate using light braking.
25. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P15A5 (85) indicated?
YES -
Check for poor connections or loose terminals at the motor power cable, the MCM, and the motor stator, then go to step 1.
NO -
Go to step 26.
26. Monitor the OBD STATUS for DTC P15A5 (85) 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 25, go to the indicated DTC's troubleshooting.�
NO -
If the screen indicates FAILED, check for poor connections or loose terminals at the motor power cable, the MCM, and the motor stator, then go to step 1. If the screen indicates NOT COMPLETED, go to step 24.
27. 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.
28. Test-drive the vehicle using wide open throttle for at least 2 seconds, then decelerate using light braking.
29. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P15A5 (85) indicated?
YES -
Check for poor connections or loose terminals at the motor power cable, the MCM, and the motor stator, If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then go to step 28. If the BCM module was substituted, go to step 1.
NO -
Go to step 30.
30. Monitor the OBD STATUS for DTC P15A5 (85) 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 step 29, go to the indicated DTC's troubleshooting.�
NO -
If the screen indicates FAILED, check for poor connections or loose terminals at the motor power cable, the MCM, and the motor stator. If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then go to step 28. If the MCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 28.