Diagnosis Procedure

Regarding Wiring Diagram information, refer to [STARTING SYSTEM: WIRING DIAGRAM [VQ40DE WITH CLUTCH INTERLOCK CANCEL SWITCH] ] or [STARTING SYSTEM: WIRING DIAGRAM [VQ40DE WITHOUT CLUTCH INTERLOCK CANCEL SWITCH] ].

CAUTION: Perform diagnosis under the condition that engine cannot start by the following procedure.

Remove fuel pump fuse.
Crank or start the engine (where possible) until the fuel pressure is released.

DIAGNOSIS PROCEDURE CHART

Step	Action	YES	NO
1	CHECK STARTER MOTOR MAGNETIC SWITCH CIRCUIT Turn ignition switch OFF. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 2. Disconnect starter motor connector E207. 3. Shift transmission into park or neutral. 4. Depress clutch pedal if the vehicle is equipped with M/T. 5. Check voltage between starter motor harness connector E207 terminal 1 and ground with the ignition in START. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Is battery voltage present?	Magnetic switch circuit is OK. Further inspection necessary. Refer to [DIAGNOSIS AND REPAIR WORKFLOW ].	GO TO 2
2	CHECK CONNECTOR Turn ignition switch OFF. Check the IPDM E/R harness connector E120 and starter motor harness connector E207 for damage, bent pins and loose connections. Is the inspection result normal?	GO TO 3	Repair the terminal and connector.
3	CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect IPDM E/R connector E120 and starter motor connector E207. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 2. Check continuity between starter motor harness connector E207 (A) terminal 1 and IPDM E/R harness connector E120 (B) terminal 19. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 3. Check continuity between starter motor harness connector E207 (A) terminal 1 and ground. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Are the continuity test results as specified?	Further inspection necessary. Refer to [DIAGNOSIS AND REPAIR WORKFLOW ].	Repair the harness.

Step

Action

YES

CHECK STARTER MOTOR MAGNETIC SWITCH CIRCUIT

Turn ignition switch OFF.

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2. Disconnect starter motor connector E207.
3. Shift transmission into park or neutral.
4. Depress clutch pedal if the vehicle is equipped with M/T.
5. Check voltage between starter motor harness connector E207 terminal 1 and ground with the ignition in START.

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Is battery voltage present?

Magnetic switch circuit is OK. Further inspection necessary. Refer to [DIAGNOSIS AND REPAIR WORKFLOW ].

GO TO 2

CHECK CONNECTOR

Turn ignition switch OFF.
Check the IPDM E/R harness connector E120 and starter motor harness connector E207 for damage, bent pins and loose connections.

Is the inspection result normal?

GO TO 3

Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect IPDM E/R connector E120 and starter motor connector E207.

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2. Check continuity between starter motor harness connector E207 (A) terminal 1 and IPDM E/R harness connector E120 (B) terminal 19.

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3. Check continuity between starter motor harness connector E207 (A) terminal 1 and ground.

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Are the continuity test results as specified?

Further inspection necessary. Refer to [DIAGNOSIS AND REPAIR WORKFLOW ].

Repair the harness.