Throttle Switch

A contact-type throttle switch is installed on the throttle chamber of all models. It converts throttle position into electrical signals to inform ECU of throttle position. See Fig 1.

The potentiometer within the air flow meter prevents loss of engine power during sudden acceleration/deceleration by signaling the ECU of necessary fuel enrichment requirements.

Fig 1: Contact Type Throttle Switch

Courtesy of BMW OF NORTH AMERICA, INC.

All models except Vanagon.