LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1326 (Antilock Brake System - Hybrid (Hp2)) >> Description and Operation >> ABS Description and Operation >> Slip Control Boost (SCB) Overview >> Base Brake Valves (Normal Open)

Base Brake Valves (Normal Open)

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The normally open base brake valve (N/O valve) is used to keep boost pressure from feeding back to the MC which would increase the force back to the pedal. It closes off a passage which is used to apply pressure to the wheel brakes from the MC in the case of a system failure. In this case the system failure referred to is one which results in a control mode known as push through. In normal operation the N/O valve is on (closed) during a boost pressure apply event, and is left off (open) during failed system operation.

scientia non olet · About LEMON Manuals