WARNING: This page is about a different car, the 2002 Dodge Ram Wagon, 2002 Dodge Ram Van, 2001 Dodge Ram Wagon, and 2001 Dodge Ram Van. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostic Trouble Codes (DTC) are accessed through Data Link Connector (DLC) using Chrysler's Diagnostic Readout Box (DRBIII(R)), scan tool or a Generic Scan Tool (GST). DLC provides an input signal to Powertrain Control Module (PCM) through a Serial Communications Interface (SCI) transmit circuit for scan tool to retrieve DTCs from PCM. DLC input signal is also used by PCM when performing various tests on electronic control system. DLC allows scan tool to communicate with other modules through CCD bus circuit. See CCD BUS CIRCUIT .

Modules connected to DLC through CCD bus circuit are as follows.

Air Bag Control Module (ACM)
Controller Anti-Lock Brake (CAB) Module
Central Timer Module (CTM)
Electro-Mechanical Instrument Cluster (EMIC) Module
Powertrain Control Module (PCM)

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Data Link Connector

Use the Manual With the Right Hardware

When to See a Mechanic