Century V6-3100 3.1L VIN M SFI (1998)
Body Control Module: Scan Tool Testing and Procedures
Data Display
Use a Tech 2 scan tool to read Body Control Module (BCM) status of inputs and outputs. Use this information to check that the BCM is sending and
receiving the proper data. The BCM uses data received from other vehicle systems in order to carry out some functions. Therefore, if the BCM receives
the incorrect data from another vehicle system, the BCM may function improperly. Use the Tech 2 scan tool in order to review the data conning from its
inputs and vehicle systems that interact with the BCM.
For example, when a door is closed, the Tech 2 scan tool displays the input status of the door ajar switch as INACTIVE. When the door is open, the
Tech 2 scan tool reads ACTIVE.
Use this kind of information when diagnosing a malfunction associated with a particular BCM input, or an input that is shared with another vehicle
system.
