Chime System

The chime system responds to requests from five modules: the Body Control Module (BCM), Electronic Vehicle Information Center (EVIC), Mechanical Instrument Cluster (MIC), Sentry Key Immobilizer Module (SKIM) and the Powertrain Control Module (PCM). Each module monitors its related systems and, via the PCI bus, requests the BCM to sound its internal chime as needed.

The chime will sound for the following conditions:

MIC REQUESTED CHIME MESSAGES
- Airbag
- Check Gauges: Charging Voltage Low Coolant Temp High Low Oil Pressure Charging Voltage High
- Low Fuel
- ABS
- Low Battery Voltage
- Water in Fuel (Diesel)
- Low Coolant level (Diesel)

BCM INITIATED CHIME MESSAGES
- Headlamp ON with ignition OFF and driver door open
- Key in ignition with ignition OFF and driver door open
- Seat Belt Warning
- Overspeed Warning (Gulf Coast Countries Only)




EVIC CHIME REQUESTED MESSAGES
When the following messages are displayed the EVIC will send a chime request to the BCM. The BCM will respond with a series of chimes.
- Turn signal on for more than 1.0 mile
- Service reminder
- Coolant level low
- Washer fluid low
- Tire Pressure Monitoring System alert messages (if equipped)
- Door or liftgate ajar (when critical speed is reached)**

SENTRY KEY IMMOBILIZER SYSTEM
The Sentry Key Immobilizer System (SKIS) also uses tactile beep support from the chime warning system. The Sentry Key Immobilizer Module (SKIM) is programmed to send chime request messages over the Programmable Communications Interface (PCI) data bus to the Body Control Module (BCM) to provide audible confirmation that:
- the SKIM has been successfully placed in the Customer Learn mode.
- A new Sentry key transponder has been successfully programmed by the SKIM. See the owner's manual in the vehicle glove box for more information on the features, use and operation of the SKIS. For diagnostic information, refer to the Powertrain Diagnostic Information.