81-1

DTC 81-1: Left Search Coil Sensor Malfunction

NOTE: Before you troubleshoot, review the general troubleshooting information.

1. Disconnect SH-AWD control unit connector A (20P).
2. Make sure the HDS communicates with vehicle and the SH-AWD control unit. If it doesn't, troubleshoot the DLC circuit.
3. Check for continuity between SH-AWD control unit connector terminals A1 and A11.





Is there continuity?

YES - Go to step 4.

NO - Go to step 7.

4. Check the REAR DIFFERENTIAL FLUID TEMPERATURE in the DATA LIST is above 68°F (20°C) with the HDS before proceeding to the next step. 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).
5. Measure resistance between SH-AWD control unit connector terminals A1 and A11.





Is there 2.0 Ohms or more?

YES - Go to step 6.

NO - Go to step 8.

6. Check for continuity between SH-AWD control unit connector terminal A1 and body ground.





Is there continuity?

YES - Repair short in the wire between SH-AWD control unit connector terminal A1 and body ground.

NO - Check for loose connector terminals at the SH-AWD control unit and repair if necessary. If the connections are OK, update the SH-AWD control unit if it does not have the latest software, or substitute a known-good SH-AWD control unit 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.

7. Connect SH-AWD control unit connector terminals A1 and A11 with a jumper wire. Disconnect the left solenoid 4P connector, then check for continuity between left solenoid 4P connector terminals No. 3 and No. 4.





Is there continuity?

YES - Replace the rear differential left side case.

NO - Repair open in the wire between left solenoid 4P connector terminals No. 3 and No. 4.

8. Disconnect the left solenoid 4P connector.
9. Check for continuity between left solenoid 4P connector terminals No. 3 and No. 4.





Is there continuity?

YES - Repair short in the wires between SH-AWD control unit connector A and the left search coil sensor connector.

NO - Replace the rear differential left side case.