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Turbocharger Actuator & WASTEGATE Check

Disconnect all air intake hoses from turbocharger and move aside. Disconnect actuator hose. Using a pressure gauge and pump, apply 9.4 psi (65 kPa) of pressure to actuator hose. See Fig 1. Check that rod moves .0098" (.25 mm) or more. If less, replace turbocharger assembly.

CAUTION: Never apply more than 11.4 psi (.8 kg/cm2 ) of pressure to the actuator.
Fig 1: Checking Celica Actuator
G118873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Checking Celica Turbo Pressure
G118874Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002