Circuit Operation

A scan tool can be connected to the Data Link Connector (DLC), this allows the scan tool to communicate with the Diesel Powertrain Control Module (PCM) Gasoline Vehicle Control Module (VCM) , the Inflatable Restraint Control Module, EVO/Passlock Module, Automatic Transfer Case Control Module, Transfer Case Control Module, or the Electronic Brake Control Module. System operations can then he monitored for diagnostic purposes.