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Toyota Workshop Service and Repair Manuals

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Idle Air Control Valve <--> [Idle Speed/Throttle Actuator - Electronic]|Testing and Inspection > < Diagram Information and Instructions|Page 3116

Celica GT Liftback L4-2164cc 2.2L DOHC (5S-FE) MFI (1999)

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Idle Air Control Valve: Description and Operation

The rotary solenoid type IAC valve is located on the throttle body and intake air bypassing the throttle valve is directed to the IAC valve through a
passage.

In this way the intake air volume bypassing the throttle valve is regulated, controlling the engine speed.

The ECM operates only the IAC valve to perform idle-up and provide feedback for the target idling speed.

Idle Air Control Valve <--> [Idle Speed/Throttle Actuator - Electronic]|Testing and Inspection > < Diagram Information and Instructions|Page 3116