Power Supply and Ground Circuit Check [BCM]

WARNING: This page is about a different car, the 2011 Suzuki Equator. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSIS PROCEDURE CHART

Step	Action	YES	NO
1	CHECK FUSES AND FUSIBLE LINK Check that the following fuses and fusible link are not blown. Is the fuse blown?	Replace the blown fuse or fusible link after repairing the affected circuit.	GO TO 2
2	CHECK POWER SUPPLY CIRCUIT Turn ignition switch OFF. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 2. Disconnect BCM. 3. Check voltage between BCM harness connector and ground. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Is the measurement value normal?	GO TO 3	Repair or replace harness.
3	CHECK GROUND CIRCUIT Check continuity between BCM harness connector and ground. Does continuity exist?	Inspection End.	Repair or replace harness.

Step

Action

YES

CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?

Replace the blown fuse or fusible link after repairing the affected circuit.

GO TO 2

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.

Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

Is the measurement value normal?

GO TO 3

Repair or replace harness.

CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?

Inspection End.

Repair or replace harness.