EG–546 ENGINE – 2JZ–GTE ENGINE TROUBLESHOOTING DTC 34 Turbo Pressure Malfunction CIRCUIT DESCRIPTION To control maximum turbocharging pressure the turbocharger system includes a waste gate valve controlled by an actuator. The actuator is controlled by the manifold pressure which is duty controlled by the VSV based on signals from the ECM. If the ECM detects the below diagnosis conditions, it operates the fail safe function in which the ECM stops fuel injection. ECM VSV for Waste Gate Valve Waste Gate Valve Air Cleaner Actuator FI6974 DTC No. | Diagnostic Trouble Code Detecting Condition | Trouble Area 34 All conditions below are detected continuously for 2 sec. or more: (a) Manifold absolute pressure: 200 kPa (2.0 kgf/cm², 29 psi) or more (b) Throttle valve opening angle: 20° or more (c) Engine speed: 2,400 rpm or more • Actuator (for waste gate valve) • Short in VSV for waste gate valve circuit • ECM