66 No CCD Bus Messages From TCM

66 NO CCD BUS MESSAGES FROM TCM (AUTOMATIC TRANSAXLES ONLY)

Talon's with an F4AC1 automatic transaxle uses information collected by the Powertrain Control Module (PCM). This information is then delivered to the Transmission Control Module (TCM) over a data bus called Chrysler Collision Detection (CCD) system. The TCM uses several pieces of information that the PCM already has available. Instead of having both controllers receive the same inputs, the PCM receives the input, judges the circuit, and then sends the TCM the information. This information is used by the TCM to assure quality shift points during all operation modes.

A Diagnostic Trouble Code (DTC) is recorded if the PCM fails to communicate with the TCM on the CCD bus.

This malfunction could possible be caused by problems with any of the following components:

- CCD bus wiring or related connectors (open or shorts)
- TCM
- PCM