DTC 42-2

DTC 42-2: Differential Oil Temperature Sensor (Short)

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF.
3. Turn the ignition switch ON (II).
4. Check for DTCs with the HDS.

Is DTC 42-2 indicated?

YES - Go to step 5.

NO - Intermittent failure, system is OK at this time.

5. Turn the ignition switch OFF.
6. Disconnect the rear differential oil temperature sensor 2P connector.
7. Disconnect SH-AWD control unit connector A (26P).
8. Check for continuity between SH-AWD control unit connector terminal A9 and rear differential oil temperature sensor 2P connector terminal No. 2.





Is there continuity?

YES - Go to step 9.

NO - Repair open in the wire between SH-AWD control unit connector A and the rear differential oil temperature sensor connector.

9. Check for continuity between SH-AWD control unit connector terminals A9 and A12.





Is there continuity?

YES - Repair short in the wire between SH-AWD control unit connector A and the rear differential oil temperature sensor connector.

NO - Go to step 10.

10. Check for continuity between SH-AWD control unit connector terminals A12 and A23.





Is there continuity?

YES - Repair short in the wire between SH-AWD control unit connector A and rear differential oil temperature sensor connector.

NO - Go to step 11.

11. Reconnect the rear differential oil temperature connector 2P connector.
12. Measure resistance between SH-AWD control unit connector terminals A9 and A23.





Is there 520 Ohms to 3.5 k Ohms with the rear differential fluid at normal temperature?

YES - Substitute a known-good SH-AWD control unit and recheck.

NO - Replace the rear differential oil temperature sensor.