Charger V6-3.5L (2009)
Audible Warning Device: Description and Operation
Chime/Buzzer - Description
DESCRIPTION
CHIME WARNING SYSTEM
The chime warning system uses an electromechanical transducer and an electromechanical relay that are soldered onto the electronic circuit board inside
of the instrument cluster, also known as the Cab Compartment Node (CCN) to provide audible indications of various vehicle conditions that may require
the attention of the vehicle operator or occupants. The CCN also includes the hardware and software necessary to serve as the electronic body control
module and is sometimes referred to as the Cab Compartment Node or CCN.
The electromechanical transducer generates beep tones and chime tones, while the electromechanical relay generates click tones to emulate the sounds
associated with conventional turn signal and hazard warning flasher operation. The microprocessor-based CCN utilizes electronic chime request
messages received from other modules in the vehicle over the Controller Area Network (CAN) data bus along with hard wired inputs to monitor many
sensors and switches throughout the vehicle. In response to those inputs, the circuitry and programming of the CCN allow it to control the audible
outputs that are produced through its on-board transducer and relay.
PARK ASSIST SYSTEM
The Park Assist System is an electronic parking aid that alerts the driver to obstacles which are located immediately behind the vehicle. Objects are
sensed using ultrasonic sound waves. When an object is detected, the system will give the driver visual and audible warnings. The system is customer
programmable through the Electronic Vehicle Information Center (EVIC) but will be enabled from the factory as a default.
The major components of the park assist system are:
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Park Assist Module - supplies voltage to the object detection sensors and park assist display. It triggers the sensors, analyzes the echo delay times
and calculates obstacle distances. It sends display information to the park assist display, performs system diagnostics, and communicates via the
Programmable Communication Interface (PCI) date bus network.
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Park Assist Sensors - there are four sensors located in the rear bumper that generate ultrasonic pulses when triggered by the park assist module.
The sensors signal the park assist module when reflected ultrasonic pulses are received.
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Park Assist Display - there are sixteen Light Emitting Diode (LED) indicators which provide indication of relative distance to obstacles. When
the system is engaged and no obstacles are detected, the two outermost yellow LED's are lit at reduced brightness to show the system is working.
As the distance to a detected obstacle decreases, more yellow LED's towards the center of the display illuminate.
For diagnosis and testing of the park assist system, use a scan tool and the appropriate body diagnostic information.
