Circuit/System Description

WARNING: This page is about a different variant/trim than selected.

For an overview of the component/system, refer to: Compressor Air Intake Turbocharger System Description

Circuit	Description
5 V Reference	Regulated voltage supplied by the control module.
Signal	The control module input circuit has an internal resistance connected to 5 V.
Low Reference	Grounded through the control module.

Component	Description
K20 Engine Control Module	The control module contains a microprocessor used to process input data to control outputs. The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly.
B112 Turbocharger Vane Position Sensor	The sensor is an analog potentiometer that varies its resistance proportionally with the position of the control rod. The variable geometry turbocharger includes a ring of aerodynamically shaped vanes in the turbine housing at the exhaust inlet. With changing the angle of the vanes it is possible to regulate the boost pressure. The vanes are rotated by a vacuum actuator which is controlled by a solenoid valve.

Component

Description

K20 Engine Control Module

The control module contains a microprocessor used to process input data to control outputs.
The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly.

B112 Turbocharger Vane Position Sensor

The sensor is an analog potentiometer that varies its resistance proportionally with the position of the control rod.
The variable geometry turbocharger includes a ring of aerodynamically shaped vanes in the turbine housing at the exhaust inlet. With changing the angle of the vanes it is possible to regulate the boost pressure. The vanes are rotated by a vacuum actuator which is controlled by a solenoid valve.