Parking Aid - Audible

Parking Aid - Audible

Component Location










Overview

The parking aid system sounds a warning to alert the driver of stationary objects near the rear bumper when REVERSE is selected. The rear sensors are activated when REVERSE is selected. The parking aid system assists the driver in detecting certain objects while the vehicle moves slowly in REVERSE at speeds of less than 4.8 kmh (3 mph). The parking aid system may not detect moving objects.

The parking aid system is active when the ignition switch is in the RUN position and the transmission in REVERSE. The parking aid system is disabled if a fault is detected in 1 of the 4 sensors, the parking aid speaker, or the PAM (Parking Aid Module). This is indicated by a parking aid disabled warning message in the message center.

The parking aid system is enabled and disabled through the message center, located in the IPC (Instrument Panel Cluster).

If a MyKey(R) restricted key is in the ignition cylinder, the parking aid menu is not available in the message center and cannot be deactivated.

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.

Component Description

Parking Aid Sensors

The parking aid sensors are 3-wire type ultrasonic distance detecting sensors.

Parking Aid Module (PAM)

The PAM (Parking Aid Module) calculates and reports via audible output the distance between the rear of the vehicle and an object. The PAM (Parking Aid Module) requires PMI (Programmable Module Installation) when replaced.

Parking Aid Speaker

The parking aid speaker is a variable-rate warning tone and is commanded by the PAM (Parking Aid Module).