ForTwo L3-1.0L (2009)
Tire Pressure Module: Description and Operation
GF40.15-P-5124MCU Tire Pressure Monitor Control Unit, Component Description
N88
TPM [RDK] control unit
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:
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Tire pressure temperature compensation
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Warning for pressure loss
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Status monitoring
The TPM [RDK] control unit receives data telegrams via two-way radio from the following sensors:
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Left front TPM [RDK] wheel sensor (A69/1)
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Right front TPM [RDK] wheel sensor (A69/2)
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Left rear tire pressure monitor sensor (A69/3)
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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
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Circuit 30
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Circuit 31
CAN signals
The TPM [RDK] control unit is connected to the Control Area Network (databus/CAN Bus) (CAN) for data exchange.
