Intake Air Control Valve Assembly (ES300)

WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2003 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Do not adjust adjusting screw.

With 7.9 in. Hg (27 kPa) of vacuum applied to actuator, check that actuator rod moves. See Fig 1.
One minute after applying vacuum, check that actuator rod does not return.
If operation is not as specified, replace intake air control valve assembly.

Fig 1: Checking Intake Air Control Valve Assembly