44-31

SH-AWD DTC Troubleshooting: 44-31

DTC 44-31: SH-AWD Relay Stuck OFF

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

1. Make sure the battery is fully charged and the charging system is working properly.

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

3. Check these fuses:
- No. 22 (AS F/B) (70 A) fuse in the under-hood fuse/relay box.

- No. 1 (30 A) fuse in the passenger's under-hood fuse/relay box.

Are the fuses OK?
YES - Go to step 4.

NO - Replace the blown fuses and recheck. If the No. 22 (70A) and No. 1 (30A) fuses blows again, repair short to ground in the wire between the fuse and the SH-AWD relay, then replace the fuse and recheck.


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

5. 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

6. Clear the DTC with the HDS.

7. Start the engine.

8. Check for DTCs with the HDS.

Is DTC 44-31 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. Remove the SH-AWD relay, Service and Repair then test the SH-AWD relay. Power Relay Test

Is the SH-AWD relay OK?
YES - Go to step 11.

NO - Replace the SH-AWD relay. Service and Repair


11. Disconnect SH-AWD control unit connector B (8P).

12. Check for continuity between the SH-AWD relay 4P connector terminal No. 1 and SH-AWD control unit connector terminal B1.

Is there continuity?
YES - Go to step 13.

NO - Repair open in the wire between SH-AWD control unit connector A and the SH-AWD relay.






13. Check for continuity between the SH-AWD relay 4P connector terminal No. 3 and SH-AWD control unit connector terminal A3.

Is there continuity?
YES - Go to step 14.

NO - Repair open in the wire between SH-AWD control unit connector A and the SH-AWD relay.






14. Check for continuity between the SH-AWD relay 4P connector terminal No. 4 and body ground.

Is there continuity?
YES - Go to step 15.

NO - Repair open in the wire between the SH-AWD relay and body ground.






15. Measure the voltage between the SH-AWD relay 4P connector terminal No. 2 and body ground.

Is there battery voltage?
YES - Go to step 16.

NO - Repair open in the wire between the No. 1 fuse in the auxiliary under-hood fuse box and the SH-AWD relay.






16. Check for continuity between the SH-AWD relay 4P connector terminals No. 1 and No. 3 to body ground.

Is there voltage?
YES - Repair short in the wire between the SH-AWD relay and body ground.

NO - Check for loose connector terminals at the SH-AWD control unit. If the connections are OK, substitute a known-good SH-AWD control unit Service and Repair and recheck. If the symptom/indication goes away with the known-good SH-AWD control unit, replace the original SH-AWD control unit. Service and Repair