Circuit Description
WARNING: This page is about a different car, the 2001 Pontiac Grand Prix, 2001 Pontiac Firebird, 2001 Oldsmobile Intrigue, and 2001 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
Master cylinder isolation valve, or TCS prime solenoid circuits are supplied with battery power when ignition is on. EBCM controls valve functions by grounding circuit when necessary.
DTC sets when EBCM senses an open, short to ground, or short to voltage in circuit.