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

The PAM (Parking Aid Module) calculates the distance to an object within the 170 degree semicircular (azimuth) area around the front and/or rear of the vehicle. A variable-rate warning tone is generated through the audio speakers.

The rear parking aid system calculates the distance to an object around the rear of the vehicle using 3 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 front parking aid system calculates the distance to an object around the front of the vehicle using 4 ultrasonic sensors. The parking aid sensors detect objects approximately 685.8 mm (27 in) from the front of the vehicle, 457.2 mm (18 in) from the front side of the vehicle, 304.8 mm (12 in) above the ground.

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

Parking Aid Audible Alert

The audio speaker volume is reduced when the park aid warning tone sounds. The audio 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. Objects to the rear side will generate continuous tone only for 3 seconds if the object is stationary or receding from the vehicle.

The tone is prioritized to the system (front or rear) which has an object closer to the bumper. Tone alternates between front and rear audio speakers if an object is closer than 254 mm (10 in) front and rear.