Circuit Description
WARNING: This page is about a different car, the 2005 Pontiac Aztek and 2005 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The solenoid valve relay supplies power to the solenoid valve coils in the electronic brake control module (EBCM). The solenoid valve relay, located in the EBCM, is activated whenever the ignition switch is in the RUN position, and no faults are present. The solenoid valve relay remains engaged, until the ignition is turned OFF, or a failure is detected.