Sunroof Motor Assembly

POWER SUPPLY AND GROUND CIRCUIT


SUNROOF MOTOR ASSEMBLY : Diagnosis Procedure

Regarding Wiring Diagram information, Sunroof System.
SUNROOF MOTOR ASSEMBLY
1. CHECK SUNROOF MOTOR POWER SUPPLY





1. Turn ignition switch OFF.
2. Disconnect sunroof motor assembly connector R4.
3. Turn ignition switch ON.
4. Check voltage between sunroof motor assembly connector R4 terminals 1 and 5 and ground.





Is the voltage as specified?
YES - GO TO 4
NO - GO TO 2
2. CHECK SUNROOF MOTOR POWER SUPPLY





1. Turn ignition switch OFF.
2. Disconnect BCM connector M20.
3. Check continuity between BCM connector M20 (A) and sunroof motor assembly connector R4 (B).





4. Check continuity between BCM connector M20 (A) and ground.





Are the continuity test results as specified?
YES - GO TO 3
NO - Repair or replace harness.
3. CHECK BCM OUTPUT SIGNAL





1. Connect BCM connector M20.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 and ground.





Is the voltage reading as specified?
YES - Check condition of harness and connector.
NO - Replace BCM. Service and Repair.
4. CHECK GROUND CIRCUIT





1. Turn ignition switch OFF.
2. Check continuity between sunroof motor assembly connector
R4 terminal 7 and ground.





Is the continuity test result as specified?
YES - Power supply and ground circuits are OK.
NO - Repair or replace harness.