Diagnosis Procedure

Regarding Wiring Diagram information, refer to INTERIOR ROOM LAMP CONTROL SYSTEM: WIRING DIAGRAM [WITH POWER DOOR LOCKS] .

Step	Action	YES	NO
1	CHECK IGNITION KEYHOLE OUTPUT  SDT Turn ignition switch ON. Courtesy of SUZUKI OF AMERICA CORP. 2. Select "IGN ILLUM" of BCM (INT LAMP) active test item. 3. While operating the test item, check voltage between BCM connector M18 terminal 1 and ground. Courtesy of SUZUKI OF AMERICA CORP. Is the inspection result normal?	Ignition keyhole illumination control circuit is operating normally.	GO TO 3.
2	CHECK IGNITION KEYHOLE ILLUMINATION OPEN CIRCUIT  Turn ignition switch OFF. Courtesy of SUZUKI OF AMERICA CORP. 2. Disconnect BCM connector M18 and ignition keyhole illumination connector. 3. Check continuity between BCM connector M18 (A) terminal 1 and ignition keyhole illumination connector M150 (B) terminal 2. Courtesy of SUZUKI OF AMERICA CORP. Is the inspection result normal?	Check the ignition keyhole illumination for an open. If OK, replace the BCM. Refer to [BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION ] If NG, replace ignition keyhole illumination.	Repair harness or connectors.
3	CHECK IGNITION KEYHOLE ILLUMINATION SHORT CIRCUIT  Turn ignition switch OFF. Courtesy of SUZUKI OF AMERICA CORP. 2. Disconnect BCM connector M18 and ignition keyhole illumination connector. 3. Check continuity between BCM connector M18 terminal 1 and ground. Courtesy of SUZUKI OF AMERICA CORP. Is the inspection result normal?	Check the ignition keyhole illumination for a short circuit. If OK, replace the BCM. Refer to [BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION ] If NG, replace ignition keyhole illumination.	Repair harness or connectors.