Component Tests and General Diagnostics

The following components are located in the housing for the throttle valve control module:
- Throttle drive (power accelerator actuation) - G186-. (This is an electric motor that is activated by the ECM. This electric motor opens the throttle valve against spring pressure.)
- Angle sensor -1- for throttle drive (power accelerator actuation) - G187 -
- Angle sensor -2- for throttle drive (power accelerator actuation) - G188 -


NOTE:
- The housing for the throttle valve control module must not be opened.
- The angle sensors are designed as potentiometers (variable resistances). They communicate the position of the throttle valve to the Engine Control Module (ECM) fully independent of each other.
- The potentiometers cannot be mechanically adjusted. Adjustments are made in Basic Setting (function 04) using the VAS5051 tester or VAG 1551 Scan Tool.