Fuel Injection

AIR VALVE

Bypass Air Control Valve Removal:

1. Remove BAC valve screws and separate valve from throttle body.

Bypass Air Control Valve:

2. Blow air through valve from port "A" and check that air comes out of port "B" when BAC valve is cold.
3. Place BAC valve into hot water (more than 80°C [176°F]) for one minute.
4. Blow air through valve from port "A" and check that no air comes out of port "B".
5. If not as described, replace valve.

SOLENOID VALVE (ISC)

Testing Idle Speed Control Valve:

1. Disconnect solenoid valve (ISC) connector.
2. Connect an ohmmeter to solenoid valve terminals.
3. Check resistance. It should be 7.7 - 9.3 Ohms (at 23°C [73°F]).
4. If not as specified, replace valve.

ISC solenoid valve output signal can be checked at ECU terminal 2W. With ignition switch "ON" (engine not running), terminal voltage should be approximately 11V. At idle, voltage should be approximately 10V.