Electronic Throttle System - EML

The M54 engine with MS 43 engine control uses an electronic throttle control system adopted from the ME 7.2 system on the M62 engine. The system incorporates an electric throttle valve (EDK) and pedal position sensor (PWG) for engine power control.

The MS 43 control module monitors the PWG input and activates the EDK motor based on the programmed maps for throttle control. The MS 43 module self checks the activation of the EDK via feedback potentiometers motor on the EDK motor.

Fig 1: Electronic Throttle System Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

Additional functions of the EML system include:

• Cruise control function
• DSC throttle interventions
• Maximum engine and road speed control