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Lifting Switch (Front) Circuit Inspection

WARNING: This page is about a different car, the 2005 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUNCTION 

    With CONSULT-II 

    With "LIFT FR SW-UP, LIFT FR SW-DN" on the DATA MONITOR, operate the lifting switch (front) to check ON/OFF operation.

    Fig 1: Identifying Display - Data Monitor
    G03600574Courtesy of NISSAN MOTOR CO., U.S.A.
    LIFT FR SW-DN & LIFT RR SW-UP DATA MONITOR

    Monitor item [OPERATION or UNIT] Contents
    LIFT FR SW- DN "ON/OFF" ON/OFF status judged from the FR lifter switch (DOWN) signal is displayed.
    LIFT RR SW- UP "ON/OFF" ON/OFF status judged from the RR lifter switch (UP) signal is displayed.

    Without CONSULT-II 

    1. Turn ignition switch OFF.
    2. Check voltage between driver seat control unit connector and ground.
      Fig 2: Checking Voltage Between Driver Seat Control Unit Connector And Ground
      G03600575Courtesy of NISSAN MOTOR CO., U.S.A.
      VOLTAGE BETWEEN DRIVER SEAT CONTROL UNIT CONNECTOR AND GROUND REFERENCE

      Connector Terminals (Wire color) Condition Voltage (V) (Approx.)
      (+) (-)
      P2 13 (L/B) Ground Lifting switch (front) ON (DOWN operation) 0
      Other than above Battery voltage
      28 (Y/B) Lifting switch (front) ON (UP operation) 0
      Other than above Battery voltage

    OK or NG

    • OK : Lifting switch (front) circuit is OK.
    • NG : GO TO 2.
  2. CHECK LIFTING SWITCH (FRONT) CIRCUIT HARNESS CONTINUITY 
    1. Disconnect driver seat control unit and power seat switch LH.
    2. Check continuity between driver seat control unit connector P2 terminals 13, 28 and power seat switch LH connector P2 terminals 5, 6.

      13 (L/B) - 5 (L/B) : Continuity should exist  .

      28 (Y/B) - 6 (Y/B) : Continuity should exist  .

    3. Check continuity between driver seat control unit connector P2 terminals 13, 28 and ground

      13 (L/B) - Ground : Continuity should not exist  .

      28 (Y/B) - Ground : Continuity should not exist. 

    Fig 3: Checking Continuity Between Driver Seat Control Unit Connector P2 Terminals 13, 28 And Power Seat Switch LH Connector P2 Terminals 5 And Ground
    G03600576Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK : GO TO 3.
    • NG : Repair or replace harness.
  3. CHECK LIFTING SWITCH (FRONT) 

    Check continuity between power seat switch LH as follows.

    Fig 4: Checking Continuity Between Power Seat Switch LH
    G03600577Courtesy of NISSAN MOTOR CO., U.S.A.
    CONTINUITY BETWEEN POWER SEAT SWITCH LH REFERENCE

    Connector Terminals Condition Continuity
    P8 5 3 Lifting switch (front) ON (DOWN operation) Yes
    Other than above No
    6 Lifting switch (front) ON (UP operation) Yes
    Other than above No

    OK or NG

    • OK : Check the condition of the harness and connector.
    • NG : Replace power seat switch LH. Refer to "REMOVAL AND INSTALLATION ".
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