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Front Lifter Motor Circuit Inspection

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FRONT SEAT LIFTING MECHANISM 

    Check the following.

    • Operation malfunction caused by lifter mechanism deformation or pinched harness or other foreign materials
    • Operation malfunction caused by foreign materials adhered to the lifter motor or lead screws
    • Operation malfunction and interference with other parts by 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 FR" in ACTIVE TEST.

    TEST ITEM DESCRIPTION

    Test item Description
    SEAT LIFTER FR The front lifter motor is activated by receiving the drive signal.
    Fig 1: ACTIVE TEST - CONSULT II Display Screen
    G02420590Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    GO TO 3.

    OK or NG

    • OK: Front lifter motor circuit is OK.
    • NG: GO TO 3.
  3. CHECK FRONT LIFTER MOTOR HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit connector and front lifter motor connector.
    3. Check continuity between driver seat control unit connector P3 terminals 37, 45 and front lifter motor connector P6 terminals 9, 11.

      37 (Y/G) - 11 (Y/G): Continuity should exist. 

      45 (GR) - 9 (GR): Continuity should exist. 

    4. Check continuity between driver seat control unit connector P3 terminals 37, 45 and ground.

      37 (Y/G) - Ground: Continuity should not exist. 

      45 (GR) - Ground: Continuity should not exist. 

    OK or NG

    • OK: GO TO 4.
    • NG: Repair or replace harness.
      Fig 2: Checking Front Lifter Motor Harness Continuity
      G02420591Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL 
    1. Connect the driver seat control unit and front lifter motor.
    2. Check voltage between driver seat control unit connector and ground.
      Fig 3: Terminals Voltage Reference Chart
      G02420592Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 4: Checking Voltage Between Driver Seat Control Unit Connector And Ground
      G02420593Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: Replace front lifter motor.
    • NG: Replace driver seat control unit.
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