81-2

SH AWD DTC Troubleshooting: 81-2

DTC 81-2:

Left Search Coil Sensor (Open or Short)

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

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

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

3. Check for continuity between SH-AWD control unit connector terminals A4 and A17.





Is there continuity?

YES -

Go to step 4.

NO -

Go to step 11.

4. Reconnect SH-AWD control unit connector A (26P).

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

6. Check the REAR DIFFERENTIAL FLUID TEMPERATURE in the DATA LIST with the HDS before proceeding to the next step. The temperature should be above 68 °F (20 °C). If the temperature is below 68 °F (20 °C), drive the vehicle to warm up the rear differential until the fluid temperature becomes above 68 °F (20 °C).

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

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

9. Measure the resistance between SH-AWD control unit connector terminals A4 and A17.





Is there 2.0 Ohms or more?

YES -

Go to step 10.

NO -

Go to step 14.

10. Check for continuity between SH-AWD control unit connector terminal A4 and body ground.





Is there continuity?

YES -

Repair a short in the wire between SH-AWD control unit and body ground.�

NO -

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.�

11. Disconnect the left search coil 2P connector.

12. Connect a jumper wire between SH-AWD control unit connector terminals A4 and A17.






13. Check for continuity between left search coil 2P connector terminals No. 1 and No. 2.





Is there continuity?

YES -

Replace the rear differential side case Rear Differential Side Case Replacement.�

NO -

Repair an open in the wire between the left search coil and the SH-AWD control unit.�

14. Disconnect the left search coil 2P connector.

15. Check for continuity between left search coil 2P connector terminals No. 1 and No. 2.





Is there continuity?

YES -

Repair a short in the wire between the SH-AWD control unit and the left search coil.�

NO -

Replace the rear differential side case Rear Differential Side Case Replacement.�