Dakota Quad Cab 4WD V8-4.7L VIN N (2002)
Information Bus: Description and Operation
Vehicle Communication Overview
VEHICLE COMMUNICATION
The Programmable Communication Interface or PCI Bus is a single wire multiplexed network capable of supporting binary encoded messages
shared between multiple modules. The PCI bus circuit is identified as D25 and is violet with a yellow tracer. Additional tracer colors may be
added to the yellow in order to distinguish between different module connections. The modules are wired in parallel. Connections are made in the
harness using a splice.
The splice called the Diagnostic Junction Port, serves as the "Hub" of the bus. The Diagnostic Junction Port provides an access point to isolate
most of the modules on the bus in order to assist in diagnosing the circuit. The following modules are used on the AN and AN84:
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Airbag Control Module
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Amplifier
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A/C Heater Control
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Central Timer Module
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Controller Antilock Brake
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Compass Mini-Trip Computer
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Electro/Mechanical Instrument Cluster
