GF30.30-P-3210RI Component Description For DTR Controller Unit

GF30.30-P-3210RI Component Description For DTR Controller Unit
- with CODE (219) Distronic (DTR)
- refinement package
- as of model year 09

Component Identification:

Location
The DTR controller unit is located in the center behind the radiator grille.

Task
The DTR controller unit has the following tasks:
- Actuation, supply and evaluation of the signals received by the integrated DTR radar sensor (A89b1)
- Control of target evaluation (radar)
- Transmission of radar data to the ESP, SPS [PML] and BAS control unit (N47-5) for controlling the longitudinal movement of the vehicle

The DTR control unit (A89n1) integrated in the DTR controller unit actuates the DTR radar sensor (A89b1) and evaluates the target data. This data is transmitted from the DTR control unit via the engine compartment CAN (CAN C) to the ESP control unit for controlling the longitudinal movement of the vehicle by DISTRONIC.

Input and output signals
The following input signals are evaluated by the DTR controller unit and transmitted as output signals.

Direct input signals
- Circuit 87
- Circuit 31

Direct output signals
- None

CAN input signals from ESP control unit
- Radar request
- Diagnosis request

CAN output signals to ESP control unit
- Radar data
- Diagnostic data

Design

Component Identification:

The DTR radar sensor (radar sensor) and the DTR control unit (radar sensor for electronic analysis system) are integrated in the DTR controller unit.

Radar characteristics
- Detection range of radar sensor from 10 to 150 m
- Divergence of radar beam 9° (sharp focussing)
- 77 GHz radar sensor operating on the pulse Doppler principle for independent measurement of distance and speed
- Fully integrated electronic implementation (high frequency circuits in DTR controller unit)

The radar plate is located behind the radiator grille (in front of the radar sensor). This is a radar-permeable cover necessary for correct functioning of DISTRONIC.

Its tasks are as follows:
- Shielding against external effects (such as dirt, ice or insects)
- Ensuring optimal transmission and reception properties of the radar sensor