System Description
WARNING: This page does not describe the selected car, but rather 54 other vehicles, including the 1999 Oldsmobile Bravada, 1999 GMC Yukon, 1999 GMC Suburban, 1999 GMC Sonoma, and 1999 GMC Savana Special. However, it is still accessible from the selected car via links, so may be relevant.
The diagnostic system check is an organized approach to identifying a problem created by an ABS malfunction. It must be the starting point of any ABS complaint diagnosis because it directs to the next logical step in diagnosing the complaint.
Serial data is exchanged by EBCM through harness connector C1, terminal "F", and Class 2 data is exchanged through harness connector C1, terminal "G". EBCM is supplied switched ignition voltage through harness connector C1, terminal "A", and ground is provided through harness connector C1, terminal "J".