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.
7 - Ground: Battery voltage
9 - Ground: Battery voltage
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. Refer to
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.
68 - Ground: Battery voltage
69 - Ground: Battery voltage
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.
68 - 9: Continuity should exist.
69 - 7: Continuity should exist.

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

68 - Ground: Continuity should not exist.
69 - Ground: Continuity should not exist.
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.