Principles of Operation

PRINCIPLES OF OPERATION

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

With the ignition switch in the RUN position, the parking aid module detects objects behind the vehicle when the REVERSE (R) gear is selected. The parking aid module calculates 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 0.5m (1.5ft).
- At speeds between (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.

Parking Aid Module Network Communication Messages (Part 1):

Parking Aid Module Network Communication Messages (Part 2):

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.

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:

NOTE: Both the medium speed controller area network (MS-CAN) and high speed controller area network (HS-CAN) are used for intermodule communication. A gateway message is transferred from one network to another network through the instrument cluster. Refer to Information Bus (Module Communications Network).