CHIME WARNING SYSTEM
DESCRIPTION
A chime warning system is standard factory-installed equipment. The chime warning system uses an electrome-
chanical transducer that is soldered onto the electronic circuit board inside of the ElectroMechanical Instrument
Cluster (EMIC) (1) to provide audible indications of various vehicle conditions that may require the attention of the
vehicle operator or occupants.
The EMIC electromechanical transducer generates both beep tones and chime tones. The microprocessor-based
EMIC utilizes electronic chime request messages received from other modules in the vehicle over the Programma-
ble Communications Interface (PCI) 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 EMIC allow it to control the
audible outputs that are produced through its on-board transducer.
The EMIC is capable of producing the following audible outputs:
•
Fixed Duration Beep - A short, sharp, single tactile “beep” tone that is about 150 milliseconds in duration.
•
EVIC Warning Chime - Two sets of three “beep” tones indicate a warning is being displayed by the Electronic
Vehicle Information Center (EVIC) in the overhead console.
•
Single Chime Tone - A single “bong-like” chime tone.
8B - 12
CHIME WARNING SYSTEM
KJ