Entertainment and Comfort Serial Data Line

The entertainment and comfort serial data line does not communicate with the scan tool via the DLC. Entertainment and comfort serial data line is used by the following modules to exchange information between the system components.
^ Instrument Panel Integration Module (IPM)
^ Radio
^ Remote Playback Device - CD Changer
^ Vehicle Interface Unit (VIU)

In order to diagnose the entertainment and comfort serial data line, refer to Remote Playback Device Inoperative in Radio, Stereo, and Compact Disc.
Testing and Inspection