Component Description For Intelligent Radar Sensor Control Unit - GF30.30-P-3305GW
Model 463 As Of Model Year 2013 Up To Model Year 2019
With Code EA2 (Blind Spot Monitoring)
Shown On Model 463.23
Location
The bumper radar sensors at the rear are mounted on the left and right on the inner side of the rear bumper.
Tasks
The rear bumper radar sensors detect vehicles in the blind spot over the integrated vehicles radar sensor system. The rear bumper radar sensors are ultra wideband radar sensor with the following properties:
- Detection range s = 0.18 to 3 m, for a resolution of s = 0.04 m
- Detection angle:∠ = 60° with angle measurement and ∠= 130° with detection only (tracing)
- Carrier frequency: f = 24, 125 GHz
- Method of operation: Short pulse method with f = 5 GHz band width
The rear bumper radar sensors operate according to the "master-slave" principle. The master or slave function can be determined via the connector coding. The master function is defined for the right rear bumper radar sensor. That means, the left rear bumper radar sensor transmits its requests to output warning and readiness messages via chassis CAN 1 (CAN E1) to the right intelligent radar sensor, which then evaluates the information from both radar sensors and passes on corresponding requests via chassis CAN 1 to the relevant control units. Coding (differentiation) for the radar sensors takes place by means of different assignment with ground connection on pin 5 and 6.
The rear bumper radar sensors also fulfill the following tasks:
- Reading in of signals
- Evaluation of input factors
- Output of signals
Reading in of signals
The following input factors are read in via chassis CAN 1:
- Terminal status of terminal 15
- Combination switch position (S4)
- Status of "Blind Spot Assist" function (from the IC (A1)
- Position data from navigation (for the Western Europe version)
- Driving stage engaged
- Signal "Engine running" or "Drivetrain operational"
- Wheel speeds and wheel rotation direction
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Evaluation of input factors
The input factors are evaluated by the integrated microprocessors and the relevant assembly parts are then actuated.
Output of signals
Output of signals takes place via chassis CAN 1.
The right rear bumper radar sensor transmits the following signals via the chassis CAN 1:
- Request to issue acoustic warnings
- Request to issue system or warning messages
The left rear bumper radar sensor sends detection data via chassis CAN 1 to the right rear bumper radar sensor, which uses it to generate the requests to output a warning.
| Blind Spot Assist wiring diagram | PE54.71-P-2100-97ZGA |