What is the sixth line of GTI throttle of Volkswagen Golf?

The six lines of Volkswagen Golf GTI throttle are: power line, hammer line, motor position sensor signal line, sensor power line, throttle position sensor signal line and throttle angle sensor line.

The throttle assembly of automobile engine is the key component of electronic throttle control system. On the one hand, it executes the instruction of the electronic controller to adjust the throttle opening to control air intake, and at the same time, it can output a signal reflecting the throttle position for the system to monitor the actual throttle opening. Throttle assembly consists of throttle, throttle actuator (DC motor) and throttle angle sensor. The instruction from the electronic controller makes the DC motor run and affects the throttle opening through the transmission mechanism. There are two potentiometers as position sensors, and their resistance values change with the change of throttle position. When a voltage of +5V is applied, it is converted into a voltage output corresponding to the resistance value.

These two potentiometers, together with the two potentiometers on the accelerator pedal for monitoring the pedal movement, form a part of the whole ETC monitoring function, which can provide the redundancy needed for system control. The position of the throttle plug is generally as follows: 1. Throttle angle sensor; 2. Throttle angle sensor 5V; 3. Throttle drive device; 4. Throttle angle sensor; 5. Throttle drive device; 6. Throttle angle sensor.