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Home >> Infiniti >> 2017 >> Q50 Base, 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 Signal
    (Reference value)
    Driver seat control unit
    Connector Terminal
    B601 21 Ground Steering tilt Operate
    GNSJMJIA0119ZZ-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 STEP 2  .

  2. CHECK TILT SENSOR CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect driver seat control unit connector and tilt & telescopic motor connector.
    3. Check continuity between driver seat control unit harness connector and tilt & telescopic motor harness connector.
      Driver seat control unit Tilt & telescopic motor Continuity
      Connector Terminal Connector Terminal
      B601 21 M28 1 Existed
    4. Check continuity between driver seat control unit harness connector and ground.
      Driver seat control unit Ground Continuity
      Connector Terminal
      B601 21 Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness or connector.

  3. CHECK TILT SENSOR POWER SUPPLY

    1. Turn ignition switch ON.
    2. Check voltage between tilt & telescopic motor harness connector and ground.
      (+) (-) Voltage (V)
      Tilt & telescopic motor
      Connector Terminals
      M28 2 Ground 9 - 16

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    GO TO STEP 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 & telescopic motor harness connector.
      Automatic drive positioner control unit Tilt & telescopic motor Continuity
      Connector Terminal Connector Terminal
      M44 27 M28 2 Existed
    4. Check continuity between automatic drive positioner control unit harness connector and ground.
      Automatic drive positioner control unit Ground Continuity
      Connector Terminal
      M44 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 & telescopic motor harness connector.
      Automatic drive positioner control unit Tilt & telescopic motor Continuity
      Connector Terminal Connector Terminal
      M43 20 M28 8 Existed
    4. Check continuity between automatic drive positioner control unit harness connector and ground.
      Automatic drive positioner control unit Ground Continuity
      Connector Terminal
      M43 20 Not existed

    Is the inspection result normal?

    YES 

    Replace tilt & telescopic motor.

    NO 

    Repair or replace harness or connector.

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