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DTC C1841-27

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DTC C1841-27  : Differential Fluid Temperature Sensor Circuit Range/Performance Problem

NOTE:  Before you troubleshoot, review the General Troubleshooting Information .

DTC Description DTC Freeze Frame
C1841-27 Differential Fluid Temperature Sensor Circuit Range/Performance Problem    

DTC (Real Time AWD)

  1. DTC check

    -1. Turn the vehicle to the ON mode.

    -2. Check for DTCs with the HDS.

    DTC Description DTC Freeze Frame
    C1841-11 Differential Fluid Temperature Sensor Circuit Low Voltage    
    C1841-13 Differential Fluid Temperature Sensor Circuit High Voltage    
    C1841-27 Differential Fluid Temperature Sensor Circuit Range/Performance Problem    

    Is DTC C1841-11, C1841-13, or C1841-27 indicated?

    DTC C1841-11 is indicated

    Go to the DTC C1841-11 troubleshooting .

    DTC C1841-13 is indicated

    Go to the DTC C1841-13 troubleshooting .

    DTC C1841-27 is indicated

    Go to step 2.

  2. Problem verification

    -1. Clear the DTC with the HDS.

    -2. Turn the vehicle to the OFF (LOCK) mode.

    -3. Enter the maintenance mode and start the engine , and let it idle for 1 minute.

    -4. Check for DTCs with the HDS.

    DTC Description DTC Freeze Frame
    C1841-27 Differential Fluid Temperature Sensor Circuit Range/Performance Problem    

    Is DTC C1841-27 indicated?

    YES 

    The failure is duplicated. Go to step 3.

    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.

  3. Rear differential fluid temperature sensor check

    -1. Check the parameter(s) below with the HDS. Make note of this value as it will be needed in the following steps.

    Signal Current conditions
    Values Unit
    Voltage of the oil temperature sensor for rear differential    

    -2. Turn the vehicle to the OFF (LOCK) mode.

    -3. Turn the vehicle to the ON mode.

    -4. Check the parameter(s) below with the HDS then compare with the value checked in step 3

    Signal Current conditions
    Values Unit
    Voltage of the oil temperature sensor for rear differential    

    Did the sensor value change?

    YES 

    The rear differential fluid temperature sensor is OK. Check for an intermittent open or short in the TOH and/or TOL wires between the rear differential fluid temperature sensor and the AWD control unit, and recheck.

    NO 

    Replace the rear differential fluid temperature sensor .