PDC Programming - from Audi A2
On reversing, the parking aid system uses the echo-sounding principle to measure the distance between the back end of the vehicle and an obstacle. For this purpose, the rear bumper is fitted with four ultrasonic sensors. The sensors are actuated both in combined transmit/receive mode and in pure receive mode. On the Audi A2, the parking aid control unit features CAN capability, i.e. both the self-diagnosis and the actual system only function when the CAN is active.
Function:
The parking aid consists of the following:
Parking aid control unit -J446
Rear left parking aid sender -G203
Centre rear left parking aid sender -G204
Centre rear right parking aid sender -G205
Rear right parking aid sender -G206
Rear parking aid warning buzzer -H15
A self-test lasting less than one second is performed after switching on the ignition.
The control unit is then permanently in operation, however the distance sensing function is only activated on engaging reverse gear.
Get pdf PDC Programming - from Audi A2
