42-2
SH AWD DTC Troubleshooting: 42-2
DTC 42-2:
Differential Fluid Temperature Sensor (Open/GND Short)
NOTE: Before you troubleshoot, review the general troubleshooting information Initial Inspection and Diagnostic Overview.
1. Raise and support the vehicle, and allow all four wheels to rotate freely Service and Repair.
2. Start the engine and turn the VSA off (the VSA OFF lamp in the gauge control module turns on). Run the engine until the vehicle speed reaches 35 mph (56 km/h) and maintain the speed for 10 minutes, then slow down and stop the wheels.
3. Turn the ignition switch to LOCK (0), then turn the ignition switch back to ON (II), or select the OFF mode, then the ON mode.
4. Clear the DTC with the HDS.
5. Check for DTCs with the HDS.
Is DTC 42-2 indicated?
YES -
Go to step 6.
NO -
Intermittent failure, the system is OK at this time.
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Disconnect the rear differential fluid temperature sensor 2P connector.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Measure the voltage between rear differential fluid temperature sensor 2P connector terminals No. 1 and No. 2.
Is there 4 V or more?
YES -
Replace the rear differential fluid temperature sensor Service and Repair.
NO -
Go to step 10.
10. Measure the voltage between rear differential fluid temperature sensor 2P connector terminal No. 1 and body ground.
Is there 4 V or more?
YES -
Go to step 15.
NO -
Go to step 11.
11. Measure the voltage between SH-AWD control unit connector terminal A8 and body ground.
Is there about 4 V?
YES -
Repair an open in the wire between SH-AWD control unit connector terminal A8 and rear differential fluid temperature sensor 2P connector terminal No. 1.
NO -
Go to step 12.
12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
13. Disconnect SH-AWD control unit connector A (20P).
14. Check for continuity between rear differential fluid temperature sensor 2P connector terminal No. 1 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between SH-AWD control unit connector terminal A8 and the rear differential fluid temperature sensor 2P connector.
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.
15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
16. Disconnect SH-AWD control unit connector A (20P).
17. Check for continuity between rear differential fluid temperature sensor 2P connector terminal No. 2 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between SH-AWD control unit connector terminal A18 and the rear differential fluid temperature sensor 2P connector.
NO -
Go to step 18.
18. Connect SH-AWD control unit connector terminal A18 to body ground with a jumper wire.
19. Check for continuity between rear differential fluid temperature sensor 2P connector terminal No. 2 and body ground.
Is there continuity?
YES -
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.
NO -
Repair an open in the wire between SH-AWD control unit connector terminal A18 and the rear differential fluid temperature sensor 2P connector.