Your Vehicle: 2009 Nissan-Datsun Altima V6-3.5L (VQ35DE)
 
Vehicle » Body and Frame » Roof and Associated Components » Sunroof / Moonroof » Testing and Inspection » Component Tests and General Diagnostics » Power Supply And Ground Circuit » Diagnosis Procedure  
 
 
  Diagnosis Procedure  
 

POWER SUPPLY AND GROUND CIRCUIT

SUNROOF MOTOR ASSEMBLY : Description

  • BCM supplies power.
  • CPU is integrated in sunroof motor assembly.
  • Tilts up/down and slides open/close by sunroof switch operation.
  • In order to close sunroof lid certainly with the signal from combination meter at the time of high speed run, the sunroof motor torque at the time of tilt-down operation is controlled.

POWER SUPPLY AND GROUND CIRCUIT

SUNROOF MOTOR ASSEMBLY : Diagnosis Procedure

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.

  

Is the measurement value within the specification?
YES >> GO TO 2
NO >> GO TO 3

  1. CHECK GROUND CIRCUIT

  

  1. Turn ignition switch OFF.
  2. Check continuity between sunroof motor assembly connector and ground.

  

Is the Inspection result normal?
YES >> GO TO 5
NO >> Repair or replace harness.

  1. 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).

  

  1. Check continuity between BCM connector (A) and ground.

  

Is the Inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.

  1. CHECK BCM OUTPUT SIGNAL

  

  1. Connect BCM.
  2. Turn ignition switch ON.
  3. Check voltage between BCM connector and ground.

  

Is the measurement value within the specification?
YES >> Check condition of harness and connector.
NO >> Replace BCM. Refer to See: Body Control Systems\Body Control Module\Service and Repair.

  1. 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.

  

Is the measurement value within the specification?
YES >> GO TO 8
NO >> GO TO 6

  1. 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).

  

  1. Check continuity between sunroof motor assembly connector (A) and ground.

  

Is the Inspection result normal?
YES >> GO TO 7
NO >> Repair or replace harness.

  1. CHECK SUNROOF SWITCH GROUND CIRCUIT

  

  1. Connect sunroof motor assembly.
  2. Check continuity between sunroof switch connector and ground.

  

Is the Inspection result normal?
YES >> Refer to See: Component Inspection.
NO >> Repair or replace harness.

  1. 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.

  

Is the Inspection result normal?
YES >> Replace sunroof motor assembly. Refer to See: Service and Repair\Removal And Installation. After that, refer to See: Programming and Relearning\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).

  

  1. Check continuity between combination meter connector (A) and ground.

  

Is the Inspection result normal?
YES >> Replace combination meter. Refer to See: Instrument Panel, Gauges and Warning Indicators\Instrument Cluster / Carrier\Service and Repair\Removal and Replacement.
NO >> Repair or replace harness.