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Check Rear Lifting Sensor Circuit

  1. CHECK FUNCTION 

    With CONSULT-III 

    Check operation with "LIFT RR PULSE" on the DATA MONITOR to make sure pulse changes.

    DATA MONITOR CONTENTS CHART

    Monitor item [OPERATION or UNIT]  
    LIFT RR PULSE - The rear lifting position (pulse) judged from the lifting sensor (rear) is displayed.

    Without CONSULT-III 

    1. Turn ignition switch OFF.
    2. Check signal between driver seat control unit connector and ground, with oscilloscope.
      CONNECTOR TERMINAL SIGNAL SPECIFICATION

      Driver seat control unit connector Terminals Condition Signal (Reference value)
      (+) (-)
      B204 10 Ground Rear lifting motor operation
      G04902547Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 1: Checking Signal Between Driver Seat Control Unit Connector And Ground
      G05212937Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Rear lifting sensor circuit is OK.

    NG: GO TO 2.

  2. CHECK REAR LIFTING MOTOR SENSOR CIRCUIT HARNESS CONTINUITY 
    1. Disconnect driver seat control unit and rear lifting sensor connector.
    2. Check continuity between driver seat control unit connector and rear lifting sensor connector.
      CONTINUITY SPECIFICATION

      A B Continuity
      Driver seat control unit connector Terminal Rear lifting sensor connector Terminal
      B204 10 B218 10 Yes
      31 31
    3. Check continuity between driver seat control unit connector and ground.
      Fig 2: Checking Continuity Between Driver Seat Control Unit Connector And Ground
      G05212938Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY SPECIFICATION

      A Ground Continuity
      Driver seat control unit connector Terminal
      B204 10 No
      31

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness.

  3. CHECK DRIVER SEAT CONTROL UNIT OUTPUT 
    1. Connect driver seat control unit connector.
    2. Check voltage between driver seat control unit connector and ground.
      VOLTAGE SPECIFICATION

      Terminals Voltage (V) (Approx.)
      (+) (-)
      Driver seat control unit connector Terminal
      B204 10 Ground 5

    OK or NG 

    OK: Replace rear lifting sensor.

    NG: Replace automatic drive positioner control unit.

    Fig 3: Checking Voltage Between Driver Seat Control Unit Connector And Ground
    G05212939Courtesy of NISSAN MOTOR CO., U.S.A.