LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1658 (Antilock Brake System - Hybrid 3.6L (Hp5)) >> 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 Saturn Vue. 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