Diagnosis Procedure

DIAGNOSIS PROCEDURE CHART

Step	Action	YES	NO
1	INSPECTION START Turn ignition switch to START. Is any cylinder ignited? Yes or No	GO TO 2.	GO TO 3.
2	CHECK OVERALL FUNCTION With SDT Start engine. Perform "POWER BALANCE" in "Active test" mode with SDT. Make sure that each circuit produces a momentary engine speed drop. OK or NG	INSPECTION END	GO TO 4.
3	CHECK FUNCTION OF FUEL INJECTOR Without SDT Start engine. Listen to each fuel injector operating sound. Courtesy of SUZUKI OF AMERICA CORP. Clicking noise should exist. OK or NG	INSPECTION END	GO TO 4.
4	CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect fuel injector harness connector. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 3. Turn ignition switch ON. 4. Check voltage between fuel injector terminal 1 and ground with SDT or tester. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Voltage: Battery voltage OK or NG	GO TO 6.	GO TO 5.
5	DETECT MALFUNCTIONING PART Check the following. Harness connectors E2, F32 Harness connectors F45, F210 IPDM E/R harness connector E119 15A fuse (No. 55) Harness for open or short between fuel injector and fuse	Repair harness or connectors.
6	CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between fuel injector terminal 2 and ECM terminals 22, 23, 41, 42. Refer to WIRING DIAGRAM . Continuity should exist. Also check harness for short to ground and short to power. OK or NG	GO TO 8.	GO TO 7.
7	DETECT MALFUNCTIONING PART Check the following. Harness connectors F210, F45 Harness for open or short between fuel injector and ECM	Repair open circuit, short to ground or short to power in harness or connectors.
8	CHECK FUEL INJECTOR Refer to [Component Inspection ]. OK or NG	GO TO 9.	Replace fuel injector.
9	CHECK INTERMITTENT INCIDENT Refer to [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ]	INSPECTION END