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Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. CHECK SLIDING SWITCH SIGNAL
    1. Turn ignition switch ON.
    2. Check voltage between driver seat control unit harness connector and ground.
      Driver seat control unit connector Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      B202 11 Ground Sliding switch Operate (backward) 0
      Release Battery voltage
      26 Operate (forward) 0
      Release Battery voltage
      Fig 1: Checking Voltage Between Driver Seat Control Unit Connector B202 And Ground
      G04903024Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO  5

      NO: GO TO 2

  2. CHECK SLIDING SWITCH CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit and power seat switch LH.
    3. Check continuity between driver seat control unit harness connector and power seat switch LH harness connector.
      Driver seat control unit connector Terminal Power seat switch LH connector Terminal Continuity
      B202 (A) 11 B208 (B) 1 Yes
      26 5
    4. Check continuity between driver seat control unit harness connector and ground.
      Driver seat control unit connector Terminal Ground Continuity
      B202 (A) 11 No
      26
      Fig 2: Checking Continuity Between Driver Seat Control Unit Harness Connector B202 And Power Seat Switch LH Harness Connector B208
      G05936888Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness.

  3. CHECK DRIVER SEAT CONTROL UNIT OUTPUT
    1. Connect the driver seat control unit.
    2. Turn ignition switch ON.
    3. Check voltage between driver seat control unit harness connector and ground.
      Driver seat control unit connector Terminals Voltage (V) (Approx.)
      (+) (-)
      B202 11 Ground Battery voltage
      26
      Fig 3: Checking Voltage Between Driver Seat Control Unit Connector B202 And Ground
      G04903024Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 4

      NO: Replace driver seat control unit. Refer to "EXPLODED VIEW ".

  4. CHECK SLIDING SWITCH

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 5

    NO: Replace power seat switch LH. Refer to "EXPLODED VIEW ".

  5. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: Replace driver seat control unit. Refer to "EXPLODED VIEW ".

    NO: Repair or replace malfunctioning part.

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