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Lifting Switch (Front) Circuit Inspection

WARNING: This page is about a different car, the 2005 Nissan Quest. 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: Monitor Item Contents Chart - LIFT FR SW
    G02449308Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: CONSULT-II Display - DATA MONITOR
    G02449309Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Turn ignition switch OFF.
    2. Check voltage between driver seat control unit connector and ground.
      Fig 3: Driver Seat Control Unit Connector P2 Terminal Voltage Reference Chart
      G02449310Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 4: Checking Voltage Between Driver Seat Control Unit Connector Terminals 13, 28 & Ground
      G02449311Courtesy of NISSAN MOTOR CO., U.S.A.

    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. 

      Fig 5: Checking Continuity Between Driver Seat Control Unit Connector P2 Terminals 13, 28 And Power Seat Switch LH Connector P2 Terminals 5, 6
      G02449312Courtesy of NISSAN MOTOR CO., U.S.A.
    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. 

    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 6: Power Seat Switch LH Connector P8 Terminals Continuity Reference Chart
    G02449313Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 7: Checking Continuity Between Power Seat Switch LH Terminal 3 And Terminals 5 & 6
    G02449314Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK : Check the condition of the harness and connector.
    • NG : Replace power seat switch LH. Refer to FRONT SEAT .
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