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

1. 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-dash fuse/relay box.

Are the fuses OK?

YES -

Go to step 2.

NO -

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

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

3. Clear the DTC with the HDS.

4. Start the engine.

5. Check for DTCs with the HDS.

Is DTC 44-31 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time.�

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

7. 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 8.

NO -

Replace the SH-AWD relay Service and Repair.�

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

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





Is there continuity?

YES -

Go to step 10.

NO -

Repair an open in the wire between SH-AWD control unit connector A and the SH-AWD relay.�

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





Is there continuity?

YES -

Go to step 11.

NO -

Repair an open in the wire between SH-AWD control unit connector A and the SH-AWD relay.�

11. Check for continuity between SH-AWD relay 4P connector terminal No. 3 and body ground.





Is there continuity?

YES -

Go to step 12.

NO -

Repair an open in the wire between the SH-AWD relay and body ground (G652).�

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





Is there battery voltage?

YES -

Go to step 13.

NO -

Repair an open in the wire between the No. 1 fuse in the passenger's under-dash fuse/relay box and the SH-AWD relay.�

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





Is there voltage?

YES -

Repair a 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.�