3. Check Vacuum Existence

Without CONSULT-II 

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. Apply 12V of direct current between VIAS control solenoid valve terminals 1 and 2.
5. Check vacuum existence under the following conditions.

Fig 1: Testing Conditions

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Testing Results

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Repair or replace power valve actuator.

NG: GO TO 4.