Block 11 Quiz Brake Systems

ABS hydraulic control unit modulates pressure by:

• Releasing fluid to reservoir

• Recirculating fluid via pump

• Bleeding air from system

• Heating brake fluid

Brake fluid DOT 5.1 wet boiling point must exceed:

• 140°C

• 180°C

• 200°C

• 260°C

Electronic parking brake (EPB) calibration requires:

• Diagnostic tool

• Ignition on

• Foot brake applied

• EPB service mode activated

Disc brake pad taper wear indicates:

• Sticking caliper pins

• Warped rotor

• Aggressive driving

• ABS malfunction

Drum brake self-adjuster failure causes:

• Pedal travels too far

• Grabbing during braking

• Pulling to one side

• Grinding noise

Brake pressure bleed sequence should follow:

• Shortest line first

• Farthest wheel first

• Random order

• ABS module first

Combination valve failure may cause:

• No brakes

• Uneven braking

• Brake drag

• Warning light

Pad transfer layer glazing appears as:

• Blue spots

• Cracks

• Shiny patches

• Thickness variation

Brake fluid hygroscopicity means it:

• Repels water

• Absorbs water

• Changes viscosity

• Forms deposits

EPB motor current draw over ___ indicates seizure:

• 5A

• 10A

• 20A

• 30A