Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.

DIAGNOSIS PROCEDURE

Step	Action	YES	NO
1	CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to [POWER SUPPLY AND GROUND CIRCUIT CHECK ]. Courtesy of SUZUKI OF AMERICA CORP. OK or NG	GO TO 2.	Repair or replace ground connections.
2	CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT Disconnect A/F sensor 1 harness connector. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 2. Turn ignition switch ON. 3. Check voltage between A/F sensor 1 terminal 4 and ground with SDT or tester. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Voltage: Battery voltage OK or NG	GO TO 4.	GO TO 3.
3	DETECT MALFUNCTIONING PART Check the following. Harness connectors E2, F32 IPDM E/R connector E119 15 A fuse (No. 54) Harness for open or short between A/F sensor 1 and fuse	Repair or replace harness or connectors.
4	CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to WIRING DIAGRAM . Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Continuity should exist. 4. Check harness continuity between the following terminals and ground. Refer to WIRING DIAGRAM . Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Continuity should not exist. 5. Also check harness for short to power. OK or NG	GO TO 5.	Repair open circuit or short to ground or short to power in harness or connectors.
5	CHECK INTERMITTENT INCIDENT Perform [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ] OK or NG	GO TO 6.	Repair or replace.
6	REPLACE A/F SENSOR 1 Replace malfunctioning A/F sensor 1.	INSPECTION END