Class 2 Serial Data Line

The class 2 serial data line is a Purple wire connected between Data Link Connector (DLC) terminal No. 2 and the following modules:

• Body control module.
• Electronic brake control module.
• Instrument panel cluster.
• Powertrain control module.
• Inflatable restraint sensing and diagnostic module.

The class 2 serial data line allows these modules to communicate with each other and with the scan tool for diagnostic and testing purposes.