Throttle Valve Control Module

Throttle Valve Control Module (TVCM) located on intake manifold contains following components:

• Throttle drive actuator.
• Angle sensor No. 1.
• Angle sensor No. 2.

There are no serviceable parts in TVCM, housing should not be opened. Throttle drive actuator is an electric stepper motor activated by the ECM. Stepper motor opens throttle against spring pressure. Angle sensors are potentiometers, and communicate throttle valve position to ECM independent of each other. Angle sensors cannot be mechanically adjusted. Adjustments are performed using VAS 5051 scan tool in diagnostic function 04 - BASIC SETTING. See FUNCTION 04 - BASIC SETTING under SELF-DIAGNOSTIC SYSTEM in appropriate SELF-DIAGNOSTICS article.