System Component Description

The brake assist system consists of the following:

Brake Pedal

Multiplies the braking effort applied by the driver.

Brake Pedal Pushrod

Transfers multiplied input force received from the brake pedal to the vacuum brake booster.

Vacuum Brake Booster

Uses source vacuum to decrease effort required by the driver when applying the brakes.

Vacuum Brake Booster Control Valve

Regulates the vacuum/atmospheric pressure within the vacuum brake booster. The calibration of the control valve gives more powerful vacuum assistance during low brake pedal pressure.

Vacuum Source

The source vacuum is either derived from the intake manifold or delivered from a pump, mechanically or electrically driven. For further information refer to Brake Booster Vacuum Assist Description and Operation .

Vacuum Source Delivery System

Enables delivery and retention of source vacuum for vacuum brake booster.