GF40.15-P-3000-03T Tire Pressure Monitor Control Unit, Task

GF40.15-P-3000-03T Tire pressure monitor control unit, task
- 211 up to 31.5.05
- with CODE (475) Tire pressure monitor
- except CODE (494) USA version
- except CODE (498) Japan version
- 211 up to 30.6.05
- with CODE (475) Tire pressure monitor
- with CODE (494) USA version
- with CODE (498) Japan version

Component Identification:

Task
When comparing the actual tire pressure with the stored nominal pressure, the temperature of the tire is taken into account. The TPM control unit (N88) calculates valid limits for the actual tire temperature.

If the tire pressure falls below these limits, the TPM control unit (N88) passes an appropriate CAN signal to the instrument cluster (A1) according to the pressure deviation. This CAN signal is processed in the instrument cluster (A1) and the appropriate information is displayed for the driver on the multifunction display (A1p13).

Input signals:
^ Left front TPM [RDK] wheel antenna (A2/44)
^ Right front TPM [RDK] wheel antenna (A2/45)
^ Left rear TPM [RDK] wheel antenna (A2/46)
^ Right rear TPM [RDK] wheel antenna (A2/47)
^ Power supply, terminal 30

Via the CAN-engine compartment there is a connection to:
^ Instrument cluster (A1)
^ Driver-side SAM control unit with fuse and relay module (N10/1)
^ EIS [EZS] control unit (N73)
^ Central gateway control unit (N93)

The following information is processed:

Instrument cluster (A1)
^ Initializing

Driver-side SAM control unit with fuse and relay module (N10/1)
^ Outside air temperatures
^ Terminal 61 ON (to detect "engine running")

EIS control unit (N73)
^ Wheel speeds
^ Circuit 15 ON

Central gateway control unit (N93)
^ Country code
^ Engine/body variant
^ Diagnosis active

The following information is issued via the CAN-engine compartment:

Instrument cluster (A1)
^ Tire pressures
^ Messages relevant to function
^ Messages relevant to operation

Central gateway control unit (N93)
^ Diagnosis