no, the bypass valve is not the IAC. All I can find in the Haynes manual is....
The base idle speed is set in production by means of an air bypass screw (located in the front right hand corner of the TB)which controls the amount of air that is allowed to pass through a bypass stage, past the throttle valve when it is fully closed in idle position; the screw is then sealed with a white tamperproof plug. In service, the idle is controlled by the PCM.....the plug should not be altered, if it is altered it should be replaced with a blue tamperproof plug and let run for 5 minutes to let the PCM relearn the idle values.
Hope this helps a little.
