Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the logical successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
Data Display
Use a scan tool (Tech 2) to read the status of inputs and outputs for the class 2 serial data line (the
BCM is not part of the class 2 line). Use this information to check that the module is sending and receiving the proper data. Each module uses data received from other vehicle systems in order to carry out some functions. Therefore, if a module receives the incorrect data from another vehicle system, the module may function improperly. Use the scan tool in order to review the data coming from its inputs and vehicle systems that interact with that module.