MPV ES 4WD V6-3.0L SOHC (1997)
One-Way Check Valve
1. Remove the one-way check valve.
2. Blow through A and verify that air flows from B.
3. Blow through B and verify that air does not flow from A.
4. If not as specified, replace the one-way check valve.
Solenoid Valve
1. Disconnect the vacuum hoses and the connector from each solenoid valve.
2. Blow through each valve from port B.
3. Verify that air flows from the air filter.
4. Connect 12V and a ground to the terminals of each valve.
5. Blow through each valve from port B.
6. Verify that air flows from port A.
7. If not as specified, replace the solenoid valve(s).
Actuator
1. Disconnect the vacuum hoses from the actuator.