Diagnosis Procedure

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

DIAGNOSIS PROCEDURE

Step	Action	YES	NO
1	CHECK OVERALL FUNCTION With SDT Start engine and warm it up to normal operating temperature. Perform "VIAS SOL VALVE" in "Active test" mode with SDT. Turn VIAS control solenoid valve "ON" and "OFF", and make sure that power valve actuator rod moves. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 2) Without SDT Start engine and warm it up to normal operating temperature. Rev engine up to between 2, 200 and 3, 300 RPM and make sure that power valve actuator rod moves. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. OK or NG	INSPECTION END	GO TO 2.
2	CHECK VACUUM EXISTENCE With SDT Stop engine and disconnect vacuum hose connected to power valve actuator. Start engine and let it idle. Perform "VIAS SOL VALVE" in "Active test" mode with SDT. Turn VIAS control solenoid valve "ON" and "OFF", and check vacuum existence under the following conditions. Courtesy of SUZUKI OF AMERICA CORP. OK or NG	Repair or replace power valve actuator.	GO TO 4.
3	CHECK VACUUM EXISTENCE Without SDT Stop engine and disconnect vacuum hose connected to power valve actuator. Disconnect VIAS control solenoid valve harness connector. Start engine and let it idle. Apply 12V of direct current between VIAS control solenoid valve terminals 1 and 2. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 5. Check vacuum existence under the following conditions. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. OK or NG	Repair or replace power valve actuator.	GO TO 4.
4	CHECK VACUUM HOSE Stop engine. Check hoses and tubes between intake manifold and power valve actuator for cracks, clogging, improper connection or disconnection. Refer to [VARIABLE INDUCTION AIR SYSTEM: VACUUM HOSE DRAWING ]. Courtesy of SUZUKI OF AMERICA CORP. OK or NG	GO TO 5.	Repair hoses or tubes.
5	CHECK VACUUM TANK Refer to [VIAS CIRCUIT CHECK ]. OK or NG	GO TO 6.	Replace vacuum tank.
6	CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect VIAS control solenoid valve harness connector. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 3. Turn ignition switch ON. 4. Check voltage between 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 8.	GO TO 7.
7	DETECT MALFUNCTIONING PART Check the following. Harness connectors E2, F32 Harness for open or short between VIAS control solenoid valve and IPDM E/R Harness for open or short between VIAS control solenoid valve and ECM	Repair harness or connectors.
8	CHECK VIAS CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 29 and VIAS control solenoid valve 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 9.	Repair open circuit or short to ground or short to power in harness or connectors.
9	CHECK VIAS CONTROL SOLENOID VALVE Refer to [VIAS CIRCUIT CHECK ]. OK or NG	GO TO 10.	Replace VIAS control solenoid valve.
10	CHECK INTERMITTENT INCIDENT Refer to [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ]	INSPECTION END