43-1

SH-AWD DTC Troubleshooting: 43-1

DTC 43-1: Differential Fluid Temperature Sensor Circuit Malfunction

NOTE: Before you troubleshoot, review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II).

2. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn't, troubleshoot the DLC circuit. Testing and Inspection

3. Check for DTCs with the HDS.

Is DTC 42-1 or 42-2 indicated?
YES - Go to the indicated DTC's troubleshooting.

NO - Go to step 4.


4. Clear the DTC with the HDS.

5. Start the engine.

6. Let the engine idle 1 minute.

7. Test-drive the vehicle for 5 minutes.

8. Check for DTCs with the HDS.

Is DTC 43-1 indicated?
YES - Go to step 9.

NO - Intermittent failure, the system is OK at this time.


9. Turn the ignition switch to LOCK (0).

10. Disconnect SH-AWD control unit connector A (26P).

11. Disconnect the rear differential fluid temperature sensor 2P connector.

12. Check for continuity between the rear differential fluid temperature sensor 2P connector terminals No. 1 and No. 2.

Is there continuity?
YES - Repair short in the wire between rear differential fluid temperature sensor 2P connector terminals No. 1 and No. 2.

NO - Go to step 13.






13. Reconnect all connectors.

14. Substitute a known-good SH-AWD control unit. Service and Repair

15. Start the engine.

16. Let the engine idle 1 minute.

17. Check for DTCs with the HDS.

Is DTC 43-1 indicated?
YES - Replace the rear differential fluid temperature sensor. Service and Repair

NO - Replace the original SH-AWD control unit. Service and Repair