Astro Van 2WD V6-4.3L VIN W (2001)
Information Bus: Description and Operation
The Class 2 serial data link allows specified modules to transmit, receive, or exchange data:
^
Transfer Case Shift Control Module (TCSCM)
^
Electronic Brake Control Module (EBCM)
^
Powertrain Control Module (PCM)
^
Body Control Module (BCM)
^
Instrument Panel Cluster (IPC)
^
Driver Information Center (DIC)
^
Inflatable Restraint Sensing And Diagnostic Module (SDM)
The Class 2 serial data link allows a scan tool to communicate with these modules for testing purposes, checking for DTCs, and to
activate/enable/disable functions. These communication circuits are bussed together via SP261 which ensures a connection between the Class 2
communication circuits.
The DLC has a ground for the class 2 serial data signal exiting the Scan Tool.
The Scan Tool is also supplied battery positive voltage and battery negative voltage at the DLC.
