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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Seats (Except Hybrid)) >> DTC/Circuit Diagnosis >> Motor Sensor >> RH >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. 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 MOTOR SENSOR (RH) POWER SUPPLY

    1. Turn ignition switch OFF.
    2. Disconnect power return motor assembly (RH) connector.
    3. Check voltage between power return motor assembly (RH) harness connector and ground.
      (+) (-) Condition Voltage (V)
      Power return motor assembly (RH)
      Connector Terminal
      B417 2 Ground When power return motor (RH) is operated Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    GO TO STEP 2  .

  2. CHECK MOTOR SENSOR (RH) POWER SUPPLY CIRCUIT

    1. Disconnect seatback power return control unit connector.
    2. Check continuity between seatback power return control unit harness connector and power return motor assembly (RH) harness connector.
      Seatback power return control unit Power return motor assembly (RH) Continuity
      Connector Terminal Connector Terminal
      B412 1 B417 2 Yes
    3. Check continuity between seatback power return control unit harness connector and ground.
      Seatback power return control unit Ground Continuity
      Connector Terminal
      B412 1 No

    Is the inspection result normal?

    YES 

    Replace seatback power return control unit. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  3. CHECK MOTOR SENSOR (RH) GROUND CIRCUIT

    1. Check continuity between seatback power return control unit harness connector and power return motor assembly (RH) harness connector.
      Seatback power return control unit Power return motor assembly (RH) Continuity
      Connector Terminal Connector Terminal
      B412 8 B417 5 Yes
    2. Check continuity between seatback power return control unit harness connector and ground.
      Seatback power return control unit Ground Continuity
      Connector
      B412 8 No

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair or replace harness.

  4. CHECK MOTOR SENSOR (RH) OUTPUT SIGNAL

    1. Connect seatback power return control unit connector.
    2. Check signal between seatback power return control unit harness connector and ground with an oscilloscope.
      (+) (-) Condition Signal
      (Reference value)
      Seatback power return control unit
      Connector Terminal
      B412 7 Ground During the power return motor (RH) operation
      GNSJMKIA0070GB-070Courtesy of NISSAN NORTH AMERICA, INC.
      When pinching seatback occurs The above pulse width should be expanded

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    GO TO STEP 5  .

  5. CHECK MOTOR SENSOR (RH) SIGNAL CIRCUIT

    1. Disconnect power return motor assembly (RH) connector and seatback power return control unit connector.
    2. Check continuity between power return motor assembly (RH) harness connector and seatback power return control unit harness connector.
      Seatback power return control unit Power return motor assembly (RH) Continuity
      Connector Terminal Connector Terminal
      B412 7 B417 4 Yes
    3. Check continuity between power return motor assembly (RH) harness connector and ground.
      Seatback power return control unit Ground Continuity
      Connector Terminal
      B412 7 No

    Is the inspection result normal?

    YES 

    Replace power return motor assembly (RH). Refer to EXPLODED VIEW .

    NO 

    Repair or replace harness.

  6. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    Inspection End.

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