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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Body & Frame >> Seats >> Automatic Drive Positioner (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Tilt Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK TILT SENSOR SIGNAL 
    1. Turn Ignition Switch ON.
    2. Check voltage signal between Driver Seat Control Unit connector and ground with oscilloscope.

    (+)

    (-)

    Condition

    Voltage (V)

    (Approx.)

    Driver Seat Control Unit

    Connector

    Terminals

    B514

    30

    Ground

    Steering column

    Operate
    GNSJMJIA0119Z-119Courtesy of NISSAN NORTH AMERICA, INC.

    Other than the above

    0 or 5

    Is the inspection result normal?

    YES

    Replace Driver Seat Control Unit. Refer to Removal and Installation .

    NO

    GO TO 2.

  2. CHECK TILT SENSOR CIRCUIT 
    1. Turn Ignition Switch OFF.
    2. Disconnect Driver Seat Control Unit connector and tilt motor connector.
    3. Check continuity between Driver Seat Control Unit harness connector and tilt motor harness connector.

      Driver Seat Control Unit

      Tilt motor

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      B514

      30

      M48

      5

      Existed
    4. Check continuity between Driver Seat Control Unit harness connector and ground.

      Driver Seat Control Unit

      Ground

      Continuity

      Connector

      Terminal

      B514

      30

      Not existed

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace harness or connector.

  3. CHECK TILT SENSOR POWER SUPPLY 
    1. Turn Ignition Switch ON.
    2. Check voltage between tilt motor harness connector and ground.

      (+)

      (-)

      Voltage (V)

      (Approx.)

      Tilt motor

      Connector

      Terminals

      M48

      4

      Ground

      12

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    GO TO 4.

  4. CHECK TILT SENSOR POWER SUPPLY CIRCUIT 
    1. Turn Ignition Switch OFF.
    2. Disconnect Automatic Drive Positioner Control Unit connector.
    3. Check continuity between Automatic Drive Positioner Control Unit harness connector and tilt motor harness connector.

      Automatic Drive Positioner Control Unit

      Tilt motor

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M52

      27

      M48

      4

      Existed
    4. Check continuity between Automatic Drive Positioner Control Unit harness connector and ground.

      Automatic Drive Positioner Control Unit

      Ground

      Continuity

      Connector

      Terminal

      M52

      27

      Not existed

    Is the inspection result normal?

    YES

    Replace Automatic Drive Positioner Control Unit. Refer to Removal and Installation .

    NO

    Repair or replace harness or connector.

  5. CHECK TILT SENSOR GROUND CIRCUIT 
    1. Turn Ignition Switch OFF.
    2. Disconnect Automatic Drive Positioner Control Unit connector.
    3. Check continuity between Automatic Drive Positioner Control Unit harness connector and tilt motor harness connector.

      Automatic Drive Positioner Control Unit

      Tilt motor

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M51

      20

      M48

      6

      Existed
    4. Check continuity between Automatic Drive Positioner Control Unit harness connector and ground.

      Automatic Drive Positioner Control Unit

      Ground

      Continuity

      Connector

      Terminal

      M51

      20

      Not existed

    Is the inspection result normal?

    YES

    Replace tilt motor.

    NO

    Repair or replace harness or connector.

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