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Rear Lifting Motor Circuit Inspection

WARNING: This page is about a different car, the 2007 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK REAR SEAT LIFTING MECHANISM 

    Check the following.

    • Operation malfunction caused by lifting mechanism deformation or pinched harness or other foreign materials
    • Operation malfunction caused by foreign materials adhered to the lifting motor or lead screws
    • Operation malfunction and interference with other parts by poor installation

    OK or NG 

    OK: GO TO 2.

    NG: Repair the malfunctioning part and check again.

  2. CHECK FUNCTION 

    With CONSULT-II 

    Check operation with "SEAT LIFTER RR" in ACTIVE TEST.

    SEAT LIFTER RR TEST ITEM DESCRIPTION

    Test item Description
    SEAT LIFTER R R The rear lifting motor is activated by receiving the drive signal.

    Without CONSULT-II 

    GO TO 3.

    Fig 1: CONSULT-II Display - ACTIVE TEST
    G04902984Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Rear lifting motor circuit is OK.

    NG: GO TO 3.

  3. CHECK REAR LIFTING MOTOR HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit and rear lifting motor.
    3. Check continuity between driver seat control unit connector B402 (A) terminals 38, 39 and rear lifting motor connector B407 (B) terminals 1,2.

      38 - 2: Continuity should exist. 

      39 - 1: Continuity should exist. 

    4. Check continuity between driver seat control unit B402 (A) terminals 38, 39 and ground.

      38 - Ground: Continuity should not exist. 

      39 - Ground: Continuity should not exist. 

    Fig 2: Checking Rear Lifting Motor Harness Continuity
    G04917352Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness.

  4. CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL 
    1. Connect the driver seat control unit and rear lifting motor.
    2. Check voltage between driver seat control unit connector and ground.
      DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL

      Connector Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      B402 38 Ground Rear lifting switch ON (UP operation) Battery voltage
      Other than above 0
      39 Rear lifting switch ON (DOWN operation) Battery voltage
      Other than above 0
      Fig 3: Checking Voltage Between Driver Seat Control Unit Connector And Ground
      G04917353Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace rear lifting motor. Refer to "FRONT SEAT ".

    NG: Replace driver seat control unit. Refer to "FRONT SEAT ".

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