Town & Country Van AWD V6-230 3.8L VIN L SMFI (1998)
Information Bus: Description and Operation
CCD Bus Circuit Operation
CIRCUIT OPERATION
The CCD Bus is used to supply all of the communications between the Body Control Module (BCM), other vehicle controllers and the instrument
cluster. The bus wires are a twisted pair. There are two different circuits used for the bus.
The positive side of the bus wire is accomplished on the D1 circuit. and the negative is on the D2 circuit.
To allow the Body Control Module (BCM) to communicate and control various vehicle functions the BCM uses the CCD bus. This is a twisted
pair of wires that connects to the other modules and controllers. Circuits D1 and D2 are used for the communication interface.
Circuit D1 is used for the CCD (+), and circuit D2 is used for CCD (-).
The CCD BUS and the universal data link connector are used for access to the diagnostic capabilities of the radio. Circuits D1 and D2 are used.
