Sunroof Motor Assembly Power Supply and Ground Circuit Check

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between sunroof motor assembly connector B83 terminals 7, 9 and ground.
  7 - Ground : Battery voltage
  
  9 - Ground : Battery voltage
  
  Fig 1: Checking Voltage Between Sunroof Motor Assembly Connector B83 Terminals 7, 9 And Ground
OK or NG

OK: GO TO 2.

NG: GO TO 3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect sunroof motor assembly connector.
3. Check continuity between sunroof motor assembly connector B83 terminal 10 and ground.
  10 - Ground : Continuity should exist.
  
  Fig 2: Checking Continuity Between Sunroof Motor Assembly Connector B83 Terminal 10 And Ground
OK or NG

OK: Sunroof motor assembly power supply and ground circuits are OK. Further inspection is necessary. Refer to "TROUBLE DIAGNOSIS CHART BY SYMPTOM ".

NG: Repair or replace harness.
CHECK BCM OUTPUT SIGNAL
Check voltage between BCM connector M20 terminals 68, 69 and ground.

68 - Ground : Battery voltage

69 - Ground : Battery voltage

OK or NG

OK: GO TO 4.

Fig 3: Checking Voltage Between BCM Connector M20 Terminals 68 69 And Ground

NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".
CHECK SUNROOF MOTOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and sunroof motor assembly connectors.
3. Check continuity between BCM connector M20 terminals 68, 69 and sunroof motor assembly connector B83 terminals 7, 9.
  68 - 9 : Continuity should exist.
  
  69 - 7 : Continuity should exist.
4. Check continuity between BCM connector M20 terminals 68, 69 and ground.
  68 - Ground : Continuity should not exist.
  
  69 - Ground : Continuity should not exist.
  
  Fig 4: Checking Continuity Between BCM Connector M20 Terminals 68, 69 And Ground
OK or NG

OK: Sunroof motor assembly power supply circuits are OK. Further inspection is necessary. Refer to "TROUBLE DIAGNOSIS CHART BY SYMPTOM ".

NG: Repair or replace harness.