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Home >> Pontiac >> 2009 >> G8 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0121 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2008 Pontiac G8. However, it is still accessible from the selected car via links, so may be relevant.

The solenoid relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids.