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Removal (GS300)

  1. Intake Air Control (IAC) valve is mounted underneath middle of air intake chamber. See Figure. Remove A/T oil dipstick and guide. Disconnect negative battery cable. Disconnect noise filter connector. See Figure. Disconnect engine wire clamp from bracket. Remove bolt, bracket and noise filter. Remove bolts, nuts and intake air connector to air intake chamber.
  2. Disconnect power steering air hose, vacuum hose from No. 2 vacuum pipe, and vacuum hose from Intake Air Control (IAC) valve actuator. See Figure. Disconnect accelerator cable. Remove bolt and accelerator cable clamp. Disconnect EVAP hose, bolt and clamp. Remove air intake chamber and gaskets. Remove IAC valve from air intake chamber.
  3. If servicing vacuum tank or ACIS vacuum switching valve, remove vacuum tank from intake manifold. Disconnect ACIS vacuum switching valve connector. Disconnect vacuum hoses from air intake chamber, vacuum tank and vacuum switching valve. Remove ACIS vacuum switching valve from vacuum tank.
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