DTC Troubleshooting
DTC Troubleshooting: P0A3F (89)
DTC P0A3F:
Motor Rotor Position Sensor Circuit Malfunction
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
- If the DTC cannot be cleared, do the troubleshooting for DTC U1204.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine, and wait 30 seconds.
4. Monitor the OBD STATUS for DTC P0A3F in the DTCs MENU with the HDS.
Does the HDS indicate FAILED?
YES -
Go to step 5.
NO -
If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the IMA motor rotor position sensor and the MCM. If the HDS indicates NOT COMPLETED, go to step 1.
5. Turn the ignition switch to LOCK (0).
6. Turn the battery module switch OFF.
7. Remove the IPU cover IPU Cover Removal/Installation.
8. Remove the PCU lid, the PCU busplate, and the PCU cover Service and Repair.
9. Disconnect MCM connector B (24P).
10. Check for continuity between body ground and these MCM connector B (24P) terminals individually:
- B1
- B2
- B8
- B9
- B17
- B18
Is there continuity?
YES -
Go to step 11.
NO -
Go to step 13.
11. Disconnect the IMA motor rotor position sensor 6P connector (A).
12. Check for continuity between body ground and these MCM connector B (24P) terminals individually:
- B1
- B2
- B8
- B9
- B17
- B18
Is there continuity?
YES -
Repair a short to ground in the wire between the IMA motor rotor position sensor and the MCM (B1, B2, B8, B9, B17, B18), then go to step 16.
NO -
Replace the IMA motor rotor position sensor Service and Repair, then go to step 16.
13. Measure the resistance between these MCM connector B (24P) terminals individually:
- B1 and B2
- B8 and B9
- B17 and B18
Is there 11.0-17.4 Ohms (No. 1 and No. 2), 21.6- 34.4 Ohms (No. 8 and No. 9), 19.9-31.7 Ohms (No. 17 and No. 18)?
YES -
Check for poor connections or loose terminals at the MCM, then go to step 24.
NO -
Go to step 14.
14. Disconnect the IMA motor rotor position sensor 6P connector (A).
15. At the sensor side, measure the resistance between the following IMA motor rotor position sensor 6P connector terminals individually:
- No. 1 and No. 4
- No. 2 and No. 5
- No. 3 and No. 6
Is there 21.4-34.2 Ohms (No. 1 and No. 4), 19.7- 31.5 Ohms (No. 2 and No. 5), 10.8-17.2 Ohms (No. 3 and No. 6)?
YES -
Repair an open in the wire between the IMA motor rotor position sensor and the MCM (B1, B2, B8, B9, B17, B18), then go to step 16.
NO -
Replace the IMA motor rotor position sensor Service and Repair, then go to step 16.
16. Reconnect all connectors.
17. Reinstall the PCU cover, the PCU busplate, and the PCU lid Service and Repair.
18. Reinstall the IPU cover IPU Cover Removal/Installation, then turn the battery module switch ON.
19. Turn the ignition switch to ON (II).
20. Clear the DTC with the HDS.
21. Start the engine.
22. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0A3F indicated?
YES -
Check for poor connections or loose terminals at the IMA motor rotor position sensor and the MCM, then go to step 1.
NO -
Go to step 23.
23. Monitor the OBD STATUS for DTC P0A3F in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES -
Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 22, go to the indicated DTC's troubleshooting.
NO -
If the HDS indicates FAILED, check for poor connections or loose terminals at the IMA motor rotor position sensor and the MCM. If the HDS indicates NOT COMPLETED, keep idling until a result comes on.
24. Reconnect all connectors.
25. Reinstall the PCU cover, the PCU busplate, and the PCU lid Service and Repair.
26. Reinstall the IPU cover IPU Cover Removal/Installation, then turn the battery module switch ON.
27. Update the MCM if it does not have the latest software Testing and Inspection, or substitute a known-good MCM.
28. Start the engine.
29. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0A3F indicated?
YES -
Check for poor connections or loose terminals at the IMA motor rotor position sensor and the MCM. If the MCM was updated, substitute a known-good MCM, and recheck. If the MCM was substituted, go to step 1.
NO -
Go to step 30.
30. Monitor the OBD STATUS for DTC P0A3F in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES -
If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM Service and Repair. If any other Pending or Confirmed DTCs were indicated in step 29, go to the indicated DTC's troubleshooting.
NO -
If the HDS indicates FAILED, check for poor connections or loose terminals at the IMA motor rotor position sensor and the MCM. If the MCM was updated, substitute a known-good MCM, and recheck. If the MCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, keep idling until a result comes on.