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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Roof (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Diagnosis Procedure >> Sunroof Motor Assembly

Sunroof Motor Assembly

  1. CHECK GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect sunroof motor assembly harness connector.
    3. Check continuity between sunroof motor assembly harness connector and ground.

      Sunroof motor assembly

      Ground

      Continuity

      Connector

      Terminal

      R4

      1

      Existed

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace harness or connector.

  2. CHECK POWER SUPPLY CIRCUIT-I 

    Check voltage between sunroof motor assembly harness connector and ground.

    (+)

    (-)

    Voltage (V)

    (Approx.)

    Sunroof motor assembly

    Connector

    Terminal

    R4

    6

    Ground

    Battery Voltage

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    GO TO 3.

  3. CHECK SUNROOF MOTOR CIRCUIT-I 
    1. Disconnect BCM harness connector.
    2. Check continuity between BCM harness connector and sunroof motor assembly harness connector.

      BCM

      Sunroof motor assembly

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M122

      69

      R4

      6

      Existed

    3. Check continuity between sunroof motor assembly harness connector and ground.

      Sunroof motor assembly

      Ground

      Continuity

      Connector

      Terminal

      R4

      6

      Not existed

    Is the inspection result normal?

    YES

    Check BCM. Refer to Diagnosis Procedure .

    NO

    Repair or replace harness or connector.

  4. CHECK POWER SUPPLY CIRCUIT-II 
    1. Turn ignition switch ON.
    2. Check voltage between sunroof motor assembly harness connector and ground.

      (+)

      (-)

      Voltage (V)

      (Approx.)

      Sunroof motor assembly

      Connector

      Terminal

      R4

      3

      Ground

      Battery Voltage

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    GO TO 5.

  5. CHECK SUNROOF MOTOR CIRCUIT-II 
    1. Turn ignition switch OFF.
    2. Disconnect BCM harness connector.
    3. Check continuity between BCM harness connector and sunroof motor assembly harness connector.

      BCM

      Sunroof motor assembly

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M122

      68

      R4

      3

      Existed

    4. Check continuity between sunroof motor assembly harness connector and ground.

      Sunroof motor assembly

      Ground

      Continuity

      Connector

      Terminal

      R4

      3

      Not existed

    Is the inspection result normal?

    YES

    Check BCM. Refer to Diagnosis Procedure .

    NO

    Repair or replace harness or connector.