DTC Diagnosis Procedure

With CONSULT

1. Stop engine and disconnect vacuum hose connected to power valve actuator.
2. Start engine and let it idle.
3. Perform "VIAS SOL VALVE" in "ACTIVE TEST" mode of "ENGINE" using CONSULT.
4. Turn VIAS control solenoid valve "ON" and "OFF", and check vacuum existence under the following conditions.

   VIAS SOL VALVE	Vacuum
   ON	Should exist.
   OFF	Should not exist.

Without CONSULT

1. Stop engine and disconnect vacuum hose connected to power valve actuator.
2. Disconnect VIAS control solenoid valve harness connector.
3. Start engine and let it idle.
4. Check vacuum existence under the following conditions.

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   VIAS control solenoid valve		Condition	Vacuum
   +	-
   Terminals
   1	2	12V direct current supply	Should exist.
   		No supply	Should not exist.

Is the inspection result normal?

YES

Repair or replace power valve actuator. Refer to Component Parts Location .

NO

GO TO 2.

1. Stop engine.
2. Check vacuum hose for crack, clogging, improper connection or disconnection. Refer to Vacuum Hose Drawing .

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Is the inspection result normal?

YES

GO TO 3.

NO

Repair hoses or tubes.

1. Stop engine and disconnect vacuum hose connected to intake manifold collector.
2. Start engine and let it idle.
3. Check vacuum existence from intake manifold collector.

Does vacuum existence from the intake manifold collector?

YES

GO TO 4.

NO

Replace intake manifold collector. Refer to Removal and Installation .

1. Turn ignition switch OFF.
2. Disconnect VIAS control solenoid valve harness connector.

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3. Turn ignition switch ON.
4. Check the voltage between VIAS control solenoid valve harness connector and ground

   +		-	Voltage
   VIAS control solenoid valve
   Connector	Terminal
   F75	1	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM harness connector and VIAS control solenoid valve harness connector.

   +		-		Continuity
   ECM		VIAS control solenoid valve
   Connector	Terminal	Connector	Terminal
   F77	108	F75	2	Existed

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 6.

NO

Repair open circuit or short to ground or short to power in harness or connectors.

Check VIAS control solenoid valve. Refer to Component Inspection (VIAS Control Solenoid Valve) .

Is the inspection result normal?

YES

Check intermittent incident. Refer to Intermittent Incident .

NO

Replace VIAS control solenoid valve. Refer to Exploded View .