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1F2 -- 56 M161 ENGINE CONTROLS DAEWOO MY_2000 INDUCTION SYSTEM THROTTLE VALVE ACTUATOR YAA1F540 The throttle actuator is actuated by the Engine Control Module (ECM) according to the position of the accelerator pedal position. engine load states. Ignition “Off” In the de--energized states the throttle valve position is determined to be spring capsule. Ignition “On” When the ignition S/W on the servo motor in the throttle actuator is operated by the ECM. The throttle valve adopts a position in line with the coolant temperature. Closed position In the closed throttle position, the servo motor controls engine speed by operating the throttle valve further (greater mixture) or closing it further (reduced mixture), depending on coolant temperature and engine load. When this is done, the throttle valve can be closed further by the servo motor overcoming the force of the spring capsule (mechanical end stop). If the actuator is de--energized, the throttle valve is resting against the spring capsule. Driving When driving (part/full throttle), the servo motor controls the throttle valve in line with the various load states and ac- cording to the input signals from the pedal value sensor according to the input signals from the pedal value sensor according to the position of the accelerator pedal. the throttle actuator. Further functions are; Idle speed control D Cruise control D Reducing engine torque for ASR/ABS operation D Electronic accelerator emergency running D Storing faults D Data transfer through CAN |