Motor-Driven Throttle Valve

With the aid of the actuator of the throttle valve, the throttle valve can be opened independently of the accelerator pedal position.

The motor throttle valve in the M52 and MS42 differs from electronic engine management (EML) in the following points:

• No potentiometer on accelerator pedal but rather a double potentiometer on the pulley of the motor-driven throttle valve
  
• There is a Bowden cable fitted between the accelerator pedal and motor-driven throttle valve which is also used for emergency operation purposes.
  

Deleting adaptations on completion of repair (M52):

The adaptations should generally not be deleted on completion of repairs (parts replacement). After replacing the throttle valve (MDK) the adaptation values should be deleted in order to avoid a fault code entry.