Pedal assembly

Pedal assembly

The DDE control module requires a number of signals from the pedal assembly.

Brief description of components

The following components are described for the pedal assembly:

Brake light switch

Two switches are built into the brake-light switch: the brake-light switch and the brake-light test switch (redundancy for safety reasons). The signals indicate to the DDE control module whether the brake pedal has been pressed.

Function

The brake light switch connects to ground, the brake light test switch to positive. Both signals are checked for plausibility.

The following table shows how the signals behave:

Clutch module

On vehicles with manual transmissions, the clutch module at the clutch pedal picks up the clutch position (clutch pressed: clutch switch open; clutch not pressed, clutch switch closed). The clutch module consists of a clutch switch and an electronic evaluation unit.

Accelerator pedal module

The accelerator pedal module detects the position of the accelerator pedal. The DDE control module uses this to calculate the required position of the throttle valve, taking account of other factors.