Diagnosis Procedure

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 CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT Disconnect crankshaft position (CKP) sensor (POS) harness connector. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 2. Turn ignition switch ON. 3. Check voltage between CKP sensor (POS) 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 4.	GO TO 3.
3	DETECT MALFUNCTIONING PART Check the following. Harness connectors F32, E2 Harness for open or short between crankshaft position sensor (POS) and ECM Harness for open or short between crankshaft position sensor (POS) and IPDM E/R	Repair open circuit or short to ground or short to power in harness or connectors.
4	CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Check harness continuity between CKP sensor (POS) terminal 3 and ground. Refer to WIRING DIAGRAM . Continuity should exist. Also check harness for short to power. OK or NG	GO TO 6.	GO TO 5.
5	DETECT MALFUNCTIONING PART Check the following. Harness connectors F32, E2 Harness for open or short between crankshaft position sensor (POS) and ground	Repair open circuit or short to power in harness or connectors.
6	CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Disconnect ECM harness connector. Check harness continuity between ECM terminal 13 and CKP sensor (POS) terminal 2. Refer to WIRING DIAGRAM . Continuity should exist. Also check harness for short to ground and short to power. OK or NG	GO TO 7.	Repair open circuit or short to ground or short to power in harness or connectors.
7	CHECK CRANKSHAFT POSITION SENSOR (POS) Refer to [P0335 CKP SENSOR (POS) ]. OK or NG	GO TO 8.	Replace crankshaft position sensor (POS).
8	CHECK GEAR TOOTH Visually check for chipping signal plate gear tooth. OK or NG	GO TO 9.	Replace the signal plate.
9	CHECK INTERMITTENT INCIDENT Refer to [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ]	INSPECTION END