44-12

SH AWD DTC Troubleshooting: 44-12

DTC 44-12:

SH-AWD Relay Stuck ON

NOTE: Before you troubleshoot, 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.

3. Start the engine.

4. Check for DTCs with the HDS.

Is DTC 44-12 indicated?

YES -

Go to step 5.

NO -

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

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

6. 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 7.

NO -

Replace the SH-AWD relay Service and Repair.�

7. Disconnect SH-AWD control unit connector A (20P).

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

9. Measure the voltage between SH-AWD control unit connector terminal A17 and body ground with the SH-AWD relay removed.





Is there battery voltage?

YES -

Repair a short to power in the wire between the SH-AWD control unit and the SH-AWD relay (FSR line).�

NO -

Go to step 10.

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

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

12. Measure the voltage between SH-AWD control unit connector terminals B1 and B2.





Is there battery voltage?

YES -

Repair a short to power in the wire between the SH-AWD control unit and the SH-AWD relay (PWR line).�

NO -

Update the SH-AWD control unit if it does not have the latest software SH-AWD Control Unit Update, or substitute a known-good SH-AWD control unit Service and Repair, and recheck. If the symptom/indication goes away with the updated SH-AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good SH-AWD control unit, replace the original SH-AWD control unit Service and Repair.�