Tire Pressure Module: Description and Operation

SYSTEM COMPONENTS




The tire pressure warning system consists of the following components:

DSC III CONTROL MODULE/WHEEL SPEED SENSORS

The four wheel speed sensor inputs are processed by the DSC control module and four dedicated square wave output signals are provided to the RDW control module for its processing functions.

RDW CONTROL MODULE

The RDW control module is located behind the glove box in the control module carrier. In addition to the four wheel speed signals, the module receives power (KL 15), ground (KL 31) and a ground signal input from the set/push button switch in the console.

The control module is connected to the K-Bus for:
- Output display in the check control matrix.
- Diagnostic communication through the instrument cluster with the DIS tester or MoDiC.

The control module processes the wheel speed signals and stores rolling circumference values for determining pressure losses in one or more tires.