PDC Components

PDC COMPONENTS

The PDC system consists of the following components:

PDC Control Module - Mounted in the right side of the trunk behind the trim cover.

The PDC control module activates the ultrasonic sensors mounted in the bumper cover. After activation, the control module monitors the signals coming back through the sensors. Through this signal, the PDC is able to determine the distance to any objects close to the bumpers of the vehicle. As the vehicle comes close to an object, the PDC control module will activate the respective gong (front/rear) at a specific frequency tone.

The PDC control module is linked to the I/K-Bus for the following:
- Vehicle speed
- Transmission range selection
- Diagnosis

Gong/Speaker




The PDC control module activates a gong and a speaker to alert the driver of the detected object. The front mounted gong is the existing check control gong located under the glove box. The rear mounted speaker is located under the right side of the parcel shelf.

PDC Switch




Mounted in the center console or SZM below the IHKA control panel. The system can be switched "ON"/"OFF" at any time using the switch. The LED in the switch will flash simultaneously with the gong/speaker tones when the system detects an object.

Eight Ultra-sonic Sensors
Four sensors each front and rear, mounted in the bumpers. The PDC sensors are small transmitter/receiver modules. They are specifically designed for automotive use. The sensors are limited to the following angles of monitoring:
- 90° on the horizontal plane
- 60° on the vertical plane

The vertical angle is reduced to avoid unintentional signalling on steep grades.




TRANSMITTING MODE
The control module sends a 40 KHz signal to the sensor. The control mode activates the sensors in a specific sequence (firing order).The ceramic element in the sensor vibrates and produces an ultra-sonic sound wave that is sent out from the bumper.

RECEIVING MODE
If the wave contacts an object, the wave is bounced back to the sensor. The returning wave causes the ceramic element to vibrate creating an electrical signal to be fed back to the control module.

The control module determines the distance to the object by the time difference between the sent and received ultra-sonic wave signals. The complete send/receive cycle, for one sensor lasts approximately 30ms (milli-seconds).