System Operation

Parking Aid - Audible

System Operation

System Diagram





Network Message Chart

PAM (Parking Aid Module) Network Input Messages





ACM (Audio Control Module) Network Input Messages






Parking Aid System Operation

The parking aid system calculates the distance to an object around the rear of the vehicle using 4 ultrasonic sensors. The parking aid sensors detect objects approximately 1,524 mm (60 in) from the rear of the vehicle, 508 mm (20 in) from the rear side of the vehicle, and 304.8 mm (12 in) above the ground.

The PAM (Parking Aid Module) calculates the distance to an object within the 170 degree semicircular (azimuth) area around the rear of the vehicle. A variable-rate warning tone is generated from a speaker attached to the PAM (Parking Aid Module).

The PAM (Parking Aid Module) can be diagnosed with a scan tool.

Parking Aid Audible Alert

The speaker increases its warning tone rate as the vehicle gets closer to an obstacle. When an object is detected within 304.8 mm (12 in) of the sensors, the warning tone becomes continuous.

When the PAM (Parking Aid Module) sounds the parking aid tone, it sends an audio volume cutback message to the IPC (Instrument Panel Cluster) which sends a message over the to the ACM (Audio Control Module). When the ACM (Audio Control Module) receives the message, it reduces the speaker output so the parking aid tone can be heard.