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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 814 (Transfer Case - ATX14A) >> Transfer Fluid Temperature Sensor >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK TRANSFER FLUID TEMPERATURE SENSOR 

    Refer to "2-4WD Shift Solenoid Valve and Transfer Fluid Temperature Sensor", "COMPONENTS INSPECTION ".

    OK or NG 

    1. OK: GO TO 2.
    2. NG: Repair or replace fluid temperature sensor.
  2. CHECK CONTINUITY 

    Check the following.

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Repair or replace transfer sub-harness.
  3. CHECK INPUT SIGNAL 
    1. WITH CONSULT-II: GO TO 4.
    2. WITHOUT CONSULT-II: GO TO  5.
  4. CHECK INPUT SIGNAL 
    Fig 1: Identifying Transfer Fluid Temperature Sensor Circuit Diagram
    G02033723Courtesy of NISSAN MOTOR CO., U.S.A.

    With CONSULT-II 

    1. Start engine.
    2. Select "ECU INPUT SIGNALS" in Data Monitor.
    3. Read out the value of "FLUID TEMP SE".

      Voltage: 

      20°C (68°F): Approx. 1.5V 

      80°C (176°F): Approx. 0.5V 

      Fig 2: View Of Moving Vehicle
      G02033724Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: CONSULT-II Data Monitor Display
      G02033725Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO  6.
    2. NG: Check the following. 
      • Continuity between transfer control unit and transfer terminal cord assembly sub-harness connector
  5. CHECK INPUT SIGNAL 

    Without CONSULT-II 

    1. Turn ignition switch to "ON" position.
    2. Check voltage between transfer control unit harness connector terminals 28 and 31.

      Voltage: 

      20°C (68°F): Approx. 1.5V 

      80°C (176°F): Approx. 0.5V 

      Fig 4: Checking Input Signal Without CONSULT-II
      G02033726Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 6.
    2. NG: Check the following. 
      • Continuity between transfer control unit and transfer terminal cord assembly sub-harness connector
  6. PERFORM SELF-DIAGNOSIS AGAIN 

    After driving for a while, perform self-diagnosis again.

    Refer to "TROUBLE DIAGNOSIS WITHOUT CONSULT-II ".

    OK or NG 

    1. OK: INSPECTION END 
    2. NG:
      1. Perform transfer control unit input/output signal inspection. Refer to "TRANSFER CONTROL UNIT INSPECTION TABLE ", "TROUBLE DIAGNOSIS - GENERAL DESCRIPTION".
      2. If NG, recheck transfer control unit pin terminals for damage or loose connection with harness connector.
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