Component description for DTR controller unit - GF30.30-P-3210LEC
ENGINES 156, 272, 273, 275, 629, 642 in MODEL 221 up to 31.8.10 with CODE (239) Autonomous intelligent cruise control Plus Light as of model year 2010/YoM 09 model refinement package
Vehicle view from the front
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 signals received by DTR radar sensor (A89b1)
- Control of target evaluation by radar
- Transfer of vehicle longitudinal control data to the radar sensors control unit (SGR) (N62/1)
The DTR control unit (A89n1) integrated in the DTR controller unit actuates the DTR radar sensor and evaluates the target data. The DTR controller unit sends the long range radar data over the vehicle dynamics CAN (CAN H) to the radar sensors control unit (for vehicle longitudinal control by the intelligent cruise control Plus Light).
Input and output signals
The following input signals are evaluated by the DTR controller unit and transmitted as output signals:
- Direct input signals
- Direct output signals
- CAN input signals
- CAN output signals
Direct input signals
- Circuit 87
- Circuit 31
Direct output signals
- None
CAN input signals
- Radar request
- Diagnosis request
CAN output signals
- Radar data
- Diagnostic data
Design
The DTR radar sensor and the DTR control unit are integrated within the DTR controller unit.
Radar characteristics
- Detection range of radar sensor from 0 to 200 m
- Detection angle of the radar beam is 60° for detection areas from 0 to 60 m and 18° for detection areas from 0 to 200 m
- 77 GHz radar sensor operating on the pulse Doppler principle for independent measurement of distance and speed
- Fully integrated electronics system (high frequency circuit in the DTR controller unit)
View of radiator grille
The radar plate is a radar-permeable cover in the radiator grille, which is required for the autonomous intelligent cruise control Plus Light to function correctly.
The radar plate has the following tasks:
- Shielding against external effects (such as dirt, ice or insects)
- Ensuring optimal transmission and reception properties of the radar sensor
| Wiring diagram for Distronic (DTR) control unit | A89 | PE30.30-P-2101-97SAB |