Principles of Operation

PRINCIPLES OF OPERATION

NOTE: The liftgate must be closed for correct operation of the parking aid system.

The parking aid radar sensor is integral to the parking aid module and no additional sensors are used.The parking aid module is located in the center of the rear bumper between the bumper isolator and the bumper cover. The parking aid speaker is located in the LH C-pillar area.

With the ignition switch in the RUN position, the parking aid module detects objects behind the vehicle when the vehicle is in REVERSE (R). The parking aid module does this by calculating the distance to an object within the azimuth field by the use of a radar sensor mounted in the rear bumper. The azimuth field is a 170 degree semicircular area emitted around the rear of the vehicle.
- At speeds under 4 km/h (2.5 mph), the system reports multiple beeps at ranges of up to 2.6 m (9 ft) A solid tone will be reported if an object is within approximately 0.5 m (1.5 ft).
- At speeds 4-8 km/h (2.5-5 mph), the system reports objects up to 5 m (16 ft).
- At speeds above 8 km/h (5 mph), the system reports objects up to 5 m (16 ft) and reports a fast beep alarm indicating time to collision is less than 1.5 seconds.
- The system is not effective at speeds greater than 10 km/h (6 mph) and may not detect certain angular or moving objects.

The parking aid system is disabled if any fault is detected, and the message center indicates the parking aid is disabled. The parking aid system is also disabled when the operator selects parking aid disable through the message center. The parking aid system remains disabled until either the ignition key is cycled from OFF to RUN, or parking aid enable is selected through the message center.

Parking Aid Module Network Communication Messages:

The parking aid module communicates with the scan tool, the smart junction box (SJB) and the instrument cluster. The chart describes network messages used by the parking aid module: