DTC C1841-13 (42-01): Differential Fluid Temperature Sensor Circuit High Voltage
NOTE: Before you troubleshoot, Refer to: HOW TO TROUBLESHOOT THE REAL TIME AWD SYSTEM (AWD) .
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| C1841-13: Differential Fluid Temperature Sensor Circuit High Voltage |
DTC (Real Time AWD)
- Problem verification
- 1. Turn the vehicle to the ON mode.
- 2. Check the parameter(s) below with the HDS.
Signal Threshold Current Conditions Values Unit Values Unit Voltage of the oil temperature sensor for rear differential More than 4.9 V Do the current condition(s) match the threshold?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.
- Determine possible failure area (short to power in TOH line, others)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Rear differential fluid temperature sensor 2P connector - 3. Turn the vehicle to the ON mode.
- 4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Rear differential fluid temperature sensor 2P connector: disconnected Test circuit TOH Test point 1 Rear differential fluid temperature sensor 2P connector No. 1 Test point 2 Body ground Is there about 4.9 V or more?
YES
Go to step 7.
NO
Go to step 3.
- Determine possible failure area (open in TOH line, others)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Connect terminals A and B with a jumper wire.
Terminal A Rear differential fluid temperature sensor 2P connector No. 1 Terminal B Body ground - 3. Turn the vehicle to the ON mode.
- 4. Check the parameter(s) below with the HDS.
Signal Threshold Current Conditions Values Unit Values Unit Voltage of the oil temperature sensor for rear differential Less than 0.1 V Do the current condition(s) match the threshold?
YES
Go to step 5.
NO
Go to step 4.
- Open wire check (TOH line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Remove the jumper wire.
- 3. Disconnect the following connector.
Real time AWD control unit 24P connector - 4. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF mode Rear differential fluid temperature sensor 2P connector: disconnected Real time AWD control unit 24P connector: disconnected Test point 1 Test point 2 Rear differential fluid temperature sensor 2P connector No. 1 Is there continuity?
YES
Update the real time AWD control unit if it does not have the latest software , or substitute a known-good real time AWD control unit , and recheck. If the symptom/indication goes away with the updated real time AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good real time AWD control unit, replace the original real time AWD control unit .
NO
Repair an open in the TOH wire between the rear differential fluid temperature sensor and the real time AWD control unit.
- Rear differential fluid temperature sensor check
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Remove the jumper wire.
- 3. Connect terminals A and B with a jumper wire.
Terminal A Rear differential fluid temperature sensor 2P connector No. 1 Terminal B Rear differential fluid temperature sensor 2P connector No. 2 - 4. Turn the vehicle to the ON mode.
- 5. Check the parameter(s) below with the HDS.
Signal Threshold Current Conditions Values Unit Values Unit Voltage of the oil temperature sensor for rear differential Less than 0.1 V Do the current condition(s) match the threshold?
YES
REAR DIFFERENTIAL FLUID TEMPERATURE SENSOR REMOVAL & INSTALLATION(AWD) .
NO
The rear differential fluid temperature sensor is OK. Go to step 6.
- Open wire check (TOL line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Remove the jumper wire.
- 3. Disconnect the following connector.
Real time AWD control unit 24P connector - 4. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Rear differential fluid temperature sensor 2P connector: disconnected Real time AWD control unit 24P connector: disconnected Test point 1 Test point 2 Rear differential fluid temperature sensor 2P connector No. 2 Is there continuity?
YES
Update the real time AWD control unit if it does not have the latest software , or substitute a known-good real time AWD control unit , and recheck. If the symptom/indication goes away with the updated real time AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good real time AWD control unit, replace the original real time AWD control unit .
NO
Repair an open in the TOL wire between the rear differential fluid temperature sensor and the real time AWD control unit.
- Shorted wire check (TOH line to power)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Real time AWD control unit 24P connector - 3. Turn the vehicle to the ON mode.
- 4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Rear differential fluid temperature sensor 2P connector: disconnected Real time AWD control unit 24P connector: disconnected Test point 1 Rear differential fluid temperature sensor 2P connector No. 1 Test point 2 Body ground Is there about 0.5 V or more?
YES
Repair a short to power in the TOH wire between the rear differential fluid temperature sensor and the real time AWD control unit.
NO
Update the real time AWD control unit if it does not have the latest software , or substitute a known-good real time AWD control unit , and recheck. If the symptom/indication goes away with the updated real time AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good real time AWD control unit, replace the original real time AWD control unit .
