Sunroof Motor Assembly Power Supply and Ground Circuit Inspection

TROUBLE DIAGNOSIS


Sunroof Motor Assembly Power Supply and Ground Circuit Inspection

1.CHECK POWER SUPPLY CIRCUIT





1. Turn ignition switch ON.
2. Check voltage between sunroof motor assembly connector R4 terminals 7, 9 and ground.





OK or NG
OK - GO TO 2.
NG - GO TO 3.
2.CHECK GROUND CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect sunroof motor assembly.
3. Check continuity between sunroof motor assembly connector
R4 terminal 10 and ground.

10 - Ground : Continuity should exist.

OK or NG
OK - Sunroof motor assembly power supply and ground circuits are OK. Further inspection is necessary. Trouble Diagnosis Chart by Symptom .
NG - Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL





Check voltage between BCM connector M20 terminals 68, 69 and ground.





OK or NG
OK - GO TO 4.
NG - Replace BCM. Service and Repair .
4.CHECK SUNROOF MOTOR CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect BCM and sunroof motor assembly connectors.
3. Check continuity between BCM connector M20 (A) terminals 68, 69 and sunroof motor assembly connector R4 (B) terminals 7, 9.





4. Check continuity between BCM connector M20 (A) terminals 68, 69 and ground.





OK or NG
OK - Sunroof motor assembly power supply circuits are OK. Further inspection is necessary. Trouble Diagnosis Chart by Symptom .
NG - Repair or replace harness.