9-3 (9440) V6-2.8L Turbo (2008)
Traction Control Module: Description and Operation
Control Module, TCS (382) Including Hydraulic Unit
Control Module, TCS (382) Including Hydraulic Unit
Location
TCS Control Module (382)
Main use
The control module continually calculates wheel speed for all four wheels and regulates with braking or an engine torque limitation request if there is a
difference between wheel speeds and a limit value is exceeded.
The hydraulic unit provides brake pressure to the wheel brakes and holds or evacuates brake fluid as necessary using internal unit valves.
Type
The control module contains
A main processor which regulates ABS function and a large portion of diagnostics monitoring.
A slave processor, which handles parts of the diagnostics monitoring, continually checks the main processor and compares the main processor's
calculation of wheel speed.
Field Effect Transistors (FET) which engage the pump motor and the valves (on and off).
A relay which works like a safety switch and cuts the voltage to the valves if a larger system fault is detected.
Valve block