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SUNROOF MOTOR ASSEMBLY: Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

SUNROOF MOTOR ASSEMBLY 

  1. CHECK POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect sunroof motor assembly.
    3. Turn ignition switch ON.
    4. Check voltage between sunroof motor assembly connector and ground.
      Fig 1: Checking Voltage Between Sunroof Motor Assembly Connector Terminals And Ground
      G05876556Courtesy of NISSAN MOTOR CO., U.S.A.
    TERMINAL VOLTAGE REFERENCE

    Terminal Voltage (V) (Approx.)
    (+) (-)
    Sunroof motor assembly connector Terminal
    R5 4 Ground Battery voltage
    19

    Is the measurement value within the specification? 

    YES: GO TO 2

    NO: GO TO  3

  2. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Check continuity between sunroof motor assembly connector and ground.
    TERMINAL CONTINUITY REFERENCE

    Sunroof motor assembly connector Terminal Ground Continuity
    R5 8 Yes
    Fig 2: Checking Continuity Between Sunroof Motor Assembly Connector Terminal 8 And Ground
    G05876557Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO  5

    NO: Repair or replace harness.

  3. CHECK SUNROOF MOTOR CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect BCM.
    3. Check continuity between BCM connector (A) and sunroof motor assembly connector (B).
      TERMINAL CONTINUITY REFERENCE

      BCM connector Terminal Sunroof motor assembly connector Terminal Continuity
      M16 (A) 2 R5 (B) 10 Yes
      3 4
    4. Check continuity between BCM connector (A) and ground.
    TERMINAL CONTINUITY REFERENCE

    BCM connector Terminal Ground Continuity
    M16 (A) 2 No
    3
    Fig 3: Checking Continuity Between BCM And Sunroof Motor Assembly Connector Terminals
    G05876558Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO 4

    NO: Repair or replace harness.

  4. CHECK BCM OUTPUT SIGNAL
    1. Connect BCM.
    2. Turn ignition switch ON.
    3. Check voltage between BCM connector and ground.
      TERMINAL VOLTAGE REFERENCE

      Terminal Voltage (V) (Approx.)
      (+) (-)
      BCM connector Terminal
      M16 2 Ground Battery voltage
      3
      Fig 4: Checking Voltage Between BCM Connector And Ground
      G05046866Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the measurement value within the specification? 

    YES: Check condition of harness and connector.

    NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

  5. CHECK SUNROOF SWITCH INPUT SIGNAL
    1. Connect sunroof motor assembly.
    2. Turn ignition switch ON.
    3. Check voltage between sunroof motor assembly connector and ground.
      TERMINAL VOLTAGE REFERENCE

      Sunroof motor assembly connector Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      R5 6 Ground Sunroof switch is operated TILT DOWN or SLIDE OPEN 0
      Other than above Battery voltage
      2 Sunroof switch is operated TILT UP or SLIDE CLOSE 0
      Other than above Battery voltage
      Fig 5: Checking Voltage Between Sunroof Motor Assembly Connector Terminals And Ground
      G05876560Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the measurement value within the specification? 

    YES: GO TO  8

    NO: GO TO 6

  6. CHECK SUNROOF SWITCH CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect sunroof motor assembly and sunroof switch.
    3. Check continuity between sunroof motor assembly connector (A) and sunroof switch connector (B).
      TERMINAL CONTINUITY REFERENCE

      Sunroof motor assembly connector Terminal Sunroof switch connector Terminal Continuity
      R5 (A) 6 R6 (B) 1 Yes
      2 3
    4. Check continuity between sunroof motor assembly connector (A) and ground.
      TERMINAL CONTINUITY REFERENCE

      Sunroof motor assembly connector Terminal Ground Continuity
      R5 (A) 6 No
      2
      Fig 6: Checking Continuity Between Sunroof Motor Assembly And Sunroof Switch Connector Terminals
      G05876561Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO 7

    NO: Repair or replace harness.

  7. CHECK SUNROOF SWITCH GROUND CIRCUIT
    1. Connect sunroof motor assembly.
    2. Check continuity between sunroof switch connector and ground.
    TERMINAL CONTINUITY REFERENCE

    Sunroof switch connector Terminal Ground Continuity
    R6 2 Yes
    Fig 7: Checking Continuity Between Sunroof Switch Connector Terminal 2 And Ground
    G05046869Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: Refer to "SUNROOF MOTOR ASSEMBLY: COMPONENT INSPECTION ".

    NO: Repair or replace harness.

  8. CHECK COMBINATION METER SIGNAL
    1. Connect sunroof motor assembly.
    2. Turn ignition switch ON.
    3. Check signal between sunroof motor assembly connector and ground with oscilloscope.
      TERMINAL SIGNAL REFERENCE

      Terminals Condition Signal (Reference value)
      (+) (-)
      Sunroof motor assembly connector Terminal Ground
      R5 9 Speedometer operated [When vehicle speed is approx. 40 km/h (25 MPH)]
      G04876940Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 8: Checking Signal Between Sunroof Motor Assembly Connector Terminal 9 And Ground
      G05876564Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: Replace sunroof motor assembly. Refer to "REMOVAL AND INSTALLATION ". After that, refer to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: SPECIAL REPAIR REQUIREMENT ".

    NO: GO TO 9

  9. CHECK COMBINATION METER CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect combination meter.
    3. Check continuity between combination meter connector (A) and sunroof motor assembly connector (B).
      TERMINAL CONTINUITY REFERENCE

      Combination meter connector Terminal Sunroof motor assembly connector Terminal Continuity
      M24 (A) 30 R5 (B) 9 Yes
    4. Check continuity between combination meter connector (A) and ground.
      TERMINAL CONTINUITY REFERENCE

      Combination meter connector Terminal Ground Continuity
      M24 (A) 30 No
      Fig 9: Checking Continuity Between Combination Meter And Sunroof Motor Assembly Connector Terminals
      G05876565Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: Replace combination meter. Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair or replace harness.

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