Section 4 (System/Component Tests): Turbocharger: WASTEGATE

WARNING: This page is about a different car, the 1989 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.

Engine must be cool. Remove exhaust manifold insulator and side insulator. Remove hose connected to actuator and connect compressed air source with pressure gauge. See Fig 1 .
Apply compressed air to actuator. Apply 10 psi (0.7 kg/cm² ). Verify actuator rod moves when connecting and disconnecting hose supplying compressed air.

Fig 1: Testing Wastegate Actuator

Courtesy of MAZDA MOTORS CORP.

CAUTION: Do not apply compressed air over 14 psi (1.0 kg/cm² ).