Grand Cherokee 4WD V8-4.7L VIN N (2000)
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Support of EVIC programmable features
The BCM receives information over the PCI bus from the PCM in order to support certain features. The required information is as follows:
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Engine RPM
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Engine and battery temperature
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Injector on time and distance pulses
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Vehicle speed
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Engine Model
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Fuel tank level
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Vehicle identification number
The BCM provides the PCM with information on the A/C switch status.
The 2000 WJ has several programmable features which can be enabled/disabled by using the EVIC or the DRBIII (R).
CHIME SYSTEM
The chime system in the WJ utilizes four modules. The Body Control Module (BCM), the Electronic Vehicle Information Center (EVIC), and
Mechanical Instrument Cluster (MIC), and the SKIM module. The 2000 WJ also has the PCM included and has the ability to request a chime. The
chime is located in the BCM module. Each module monitors circuits and systems, then sends a request for a chime to the BCM. The BCM is
constantly monitoring the PCI bus for a chime request message. If a MIC, EVIC, or SKIM monitored system requires a chime to sound, the
request for the chime will come from the MIC, EVIC, or SKIM but the BCM will actually sound the chime.
The chime will sound for the following conditions:
MIC Requested Chime Messages
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Airbag
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Check Gauges:
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Charging Voltage Low
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Coolant Temp High
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Low Oil Pressure
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Charging Voltage High
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Low Fuel
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ABS
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Low Battery Voltage
BCM Initiated Chime Messages
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Headlamp ON with ignition OFF and driver door open
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Key in ignition with ignition OFF and driver door open
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Seat Belt Warning
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.
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Turn signal ON for more than 1.0 mile
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Service reminder
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Coolant level low
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Washer fluid low
Critical Speed Chart
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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:
