Park Assist System

The Park Assist System is an electronic parking aid that alerts the driver to obstacles which are located immediately behind the vehicle. Objects are sensed using ultrasonic sound waves. When an object is detected, the system will give the driver visual and audible warnings. The system is customer programmable through the Electronic Vehicle Information Center (EVIC) but will be enabled from the factory as a default.

The major components of the park assist system are:

1. Park Assist Module  - supplies voltage to the object detection sensors and park assist display. It triggers the sensors, analyzes the echo delay times and calculates obstacle distances. It sends display information to the park assist display, performs system diagnostics, and communicates via the Programmable Communication Interface (PCI) date bus network.
2. Park Assist Sensors  - there are four sensors located in the rear bumper that generate ultrasonic pulses when triggered by the park assist module. The sensors signal the park assist module when reflected ultrasonic pulses are received.
3. Park Assist Display  - there are sixteen Light Emitting Diode (LED) indicators which provide indication of relative distance to obstacles. When the system is engaged and no obstacles are detected, the two outermost yellow LED's are lit at reduced brightness to show the system is working. As the distance to a detected obstacle decreases, more yellow LED's towards the center of the display illuminate.

For diagnosis and testing of the park assist system, use a scan tool and the appropriate body diagnostic information.