Sebring Convertible V6-2.7L VIN R (2003)
Information Bus: Description and Operation
PROGRAMMABLE COMMUNICATIONS INTERFACE (PCI) BUS
The Programmable Communication Interface Multiplex system (PCI Bus) consist of a single wire. The Body Control Module (BCM) acts as a splice
to connect each module and the Data Link Connector (DLC) together. Each module is wired in parallel to the data bus through its PCI chip set and
uses its ground as the bus reference. The wiring is a minimum 20 gage wire.
Various modules exchange information through a communications port called the PCI Bus. The Powertrain Control Module (PCM) transmits the
Malfunction Indicator Lamp (Check Engine) On/Off signal and engine RPM on the PCI Bus. The PCM receives the Air Conditioning select input,
transaxle gear position inputs over the PCI Bus. The PCM also receives the air conditioning evaporator temperature signal from the PCI Bus.
The following components access or send information on the PCI Bus.
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Instrument Panel
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Body Control Module
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Air Bag System Diagnostic Module
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Full ATC Display Head (if equipped)
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ABS Module
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Transmission Control Module
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Powertrain Control Module
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Travel Module
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SKIM
