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Home >> Infiniti >> 2011 >> QX56 AWD >> Repair and Diagnosis >> Body & Frame >> Seats >> Automatic Drive Positioner System >> DTC/Circuit Diagnosis >> Sliding Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK SLIDING SENSOR SIGNAL
    1. Turn ignition switch ON.
    2. Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.
      VOLTAGE SPECIFICATION

      (+) (-) Condition Signal (Reference value)
      Driver seat control unit
      Connector Terminals
      B452 18 Ground Seat sliding Operate
      G07022274Courtesy of NISSAN MOTOR CO., U.S.A.
      Other than the above 0 or 5

      Is the inspection result normal? 

      YES: Replace driver seat control unit.

      NO: Go to 2.

  2. CHECK SLIDING SENSOR CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit and sliding sensor connector.
    3. Check continuity between driver seat control unit harness connector and sliding sensor harness connector.
      CONTINUITY SPECIFICATION

      Driver seat control unit Sliding motor Continuity
      Connector Terminal Connector Terminal
      B452 18 B461 18 Existed
    4. Check continuity between driver seat control unit harness connector and ground.
      CONTINUITY SPECIFICATION

      Driver seat control unit Ground Continuity
      Connector Terminal
      B452 18 Not existed

      Is the inspection result normal? 

      YES: Go to 3.

      NO: Repair or replace harness or connector.

  3. CHECK SLIDING SENSOR POWER SUPPLY
    1. Connect driver seat control unit connector.
    2. Turn ignition switch ON.
    3. Check voltage between sliding motor harness connector and ground.
      VOLTAGE SPECIFICATION

      (+) (-) Voltage (V) (Approx.)
      Sliding motor
      Connector Terminals
      B461 12 Ground 12

      Is the inspection result normal? 

      YES: Go to  5.

      NO: Go to 4.

  4. CHECK SLIDING SENSOR POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit connector.
    3. Check continuity between driver seat control unit harness connector and sliding motor harness connector.
      CONTINUITY SPECIFICATION

      Driver seat control unit Sliding motor Continuity
      Connector Terminal Connector Terminal
      B452 12 B461 12 Existed
    4. Check continuity between driver seat control unit harness connector and ground.
      CONTINUITY SPECIFICATION

      Driver seat control unit Ground Continuity
      Connector Terminal
      B452 12 Not existed

      Is the inspection result normal? 

      YES: Replace driver seat control unit.

      NO: Repair or replace harness or connector.

  5. CHECK SLIDING SENSOR GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Check continuity between sliding sensor harness connector and ground.
      CONTINUITY SPECIFICATION

      Sliding motor Ground Continuity
      Connector Terminal
      B461 43 Existed

      Is the inspection result normal? 

      YES: Replace sliding motor.

      NO: Repair or replace harness or connector.

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