System composition of electronic throttle valve

1 accelerator pedal module with accelerator pedal position sensor-used to determine the pedal position and transmit the pedal position signal to the control unit.

2 Engine Control Unit (ECU)- receives the signal from the pedal position sensor and calculates the required power according to the input voltage signal. According to other torque signals such as sudden acceleration, air conditioning and automatic transmission start, the actual throttle opening is calculated. It also monitors the throttle system.

3 Throttle control unit-controls the required air intake, adjusts the throttle opening according to the signal provided by the control system, and feeds back the throttle signal.

4 Throttle fault light (EPC light on Volkswagen instrument)-provides the driver with throttle fault information.

5 sensors and actuator sensors: accelerator pedal module with accelerator pedal sensors G79 and G 185, G 187 and G 188 with accelerator opening sensors, accelerator controller J338,

Clutch pedal switch F36, brake pedal switch F47, brake light switch f

6 Actuator: G 186 and G338 with throttle drive, and K 132c (marking gear shifter, equivalent to oil float) control system determines the pedal position according to two signals. The two signal values are just opposite, forming a contrast. When the sensor is damaged. When the system detects another throttle signal, it can run at idle speed, but the full throttle is very slow. The system also judges the idle state through the signals of the brake light switch and the brake pedal switch, closes the cruise, lights up the EPC, and stores the fault code in the fault memory. Three throttle angle sensors G 187 and G 188 (sliding rheostat type) feed back throttle position signals to the system. Two sensors are installed for accuracy and backup. When the sensor is damaged. The system uses another sensor signal, and the response to the accelerator pedal is unchanged, and the cruise is closed. EPC light is on to store fault codes. When the two signals are interrupted, the engine runs around 1500 rpm, and there is no response when stepping on the accelerator. EPC light is on, and there is fault storage. 4 Clutch pedal switch F36: Switch signal, feedback clutch pedal position, pedal is depressed, and load change function is turned off. The system does not monitor it, so there is no fault code stored and no substitute value. 5 Brake pedal switch 5 Brake pedal switch F47 and brake light switch F (switch signal) feed back the position signal of the brake pedal signal, and the control unit closes the cruise after receiving the pedal signal. If the accelerator pedal sensor is damaged, replace the idle signal. 6 Throttle drive J 186: Positioning motor. Accept the system command and control the throttle opening. After the fault occurs, the emergency operation mode is entered, and the throttle valve is opened to a certain angle by the spring. The system is running at high idle speed, and there is no response when stepping on the accelerator. The EPC light is on and the fault code is stored. 7 fault light EPC fault light K 132: prompt signal. When the system is normal, turn on the ignition switch for 3 seconds and turn it off after self-inspection. It's always on when there's a problem.