Tire pressure monitor control unit, component description - GF40.15-P-5124MCU
MODEL 451.3/4
Location
The TPM [RDK] control unit is located in the footwell on the driver-side.
Task
The TPM [RDK] control unit realizes the following functions:
- Tire pressure temperature compensation
- Warning for pressure loss
- Status monitoring
The TPM [RDK] control unit receives data telegrams via two-way radio from the following sensors:
- Left front TPM [RDK] wheel sensor (A69/1)
- Right front TPM [RDK] wheel sensor (A69/2)
- Left rear tire pressure monitor sensor (A69/3)
- Rear right tire pressure control wheel sensor (A69/4)
The data telegrams contain the pressure, tire pressure temperature, individual serial number and status information (manufacturer, direction of rotation, operating mode etc.).
If a pressure loss is detected, the tire pressure monitor warning lamp (A1e66) in the instrument cluster (A1) is actuated by the TPM [RDK] control unit.
The TPM [RDK] control unit constantly monitors all input signals and output signals for faults. Detected faults that are relevant to function are entered into the fault memory.
Discrete inputs
- Circuit 30
- Circuit 31
CAN signals
The TPM [RDK] control unit is connected to the Control Area Network (databus/CAN Bus) (CAN) for data exchange.