Data Link Connector

Fig. 20 16-Way Data Link Connector:

OPERATION
The 16-way data link connector (diagnostic scan tool connector) links the Diagnostic Readout Box (DRB) scan tool or the Mopar Diagnostic System (MDS) with the powertrain control module (PCM). The data link connector is located at lower edge of instrument panel near steering column.

CIRCUIT OPERATION
Circuit M1 supplies battery voltage to the data link connector. Circuit M1 originates in the junction block and is protected by a 10 amp fuse.

Circuit D20 connects to cavity C29 of the Power-train Control Module (PCM). Circuit D20 is the SCI receive circuit for the PCM.

Circuit D21 connects to cavity C27 of the PCM. Circuit D21 is the SCI transmit circuit for the PCM.

Circuits Z1 and Z12 provide ground for the data link connector.

To communicate with the other modules and controllers in the vehicle the CCD bus is used. The circuits involved are D1 for CCD (+) and D2 for CCD (-).

On vehicles equipped with Rear Wheel Anti-Lock (RWAL) brakes, or Anti-Lock Brakes (ABS) circuits B112 and B113 are connected to the universal data link connector.