Component Tests and General Diagnostics

BCM (BODY CONTROL MODULE)


BCM Power Supply and Ground Circuit Inspection

1.CHECK FUSES AND FUSIBLE LINK
- Check 50A fusible link (letter j, located in the fuse and fusible link box).
- Check 10A fuses [No. 6, 12 and 21, located in the fuse block (J/B)].
OK or NG
OK - GO TO 2.
NG - If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK BCM POWER SUPPLY CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors and ground.






OK or NG
OK - GO TO 3.
NG - Repair or replace the harness.
3.CHECK GROUND CIRCUIT





Check continuity between BCM connector M20 terminal 67 and ground.

67 - Ground : Continuity should exist.

OK or NG
OK - Power supply and ground circuit is OK.
NG - Repair or replace harness.