Circuit Description

The electronic brake control module (EBCM) learns the model it is installed in, by using the vehicle ID information via the class 2 serial data line. Each time the vehicle is in the RUN position or the powertrain control module (PCM) communicates this information via class 2, the EBCM internally compares the VIN information with the information stored in digits 2 through 5 of the VIN. If digit 5 of the VIN is incorrect, the EBCM will indicate a VIN information error is present.