Brakes ASE Practice Test Flashcards

Brake Systems Overview

• Amber ABS fault light indicates an issue; permanent magnet sensor systems work well below 5 mph.
• Uneven brake pad wear can occur due to various factors; air in the system is the least likely cause.

Warning Lights

• A red brake warning light may indicate issues other than a loose wheel speed sensor plug.
• A malfunctioning brake light may require inspection of the switch and wiring connectors.

Brake Pad and Rotors

• Burnishing new brake pads involves light applications of the brake pedal and cooldowns between stops; not high-speed stops.
• Uneven pad wear on disc brake systems may result from faulty caliper slide pins.

Technician Knowledge

• Neither technician's statements regarding ABS hydraulic modulators are completely correct.
• Electronic stability control requires speed sensors; its activation is indicated by a flashing telltale lamp.

Brake Components

• Integral ABS units do not include a vacuum booster; they integrate brake functions within one unit.
• Different types of brake fluids exist; DOT 5 is silicone-based.

System Failures

• Low brake pedal fade may indicate master cylinder cup seal issues; no external leaks may be present.
• Cracks or pitting on brake drums necessitate replacement or resurfacing.

Brake System Operation

• A three-function combination valve lacks a solenoid valve; it performs specific hydraulic controls.
• Metering valves may cause front brakes to skid upon initial application.

Electrical and Hydraulic Systems

• Brake light issues could stem from a short circuit; a stuck switch may also be implicated.
• An integral drum parking brake system includes components like a strut that can affect performance.

Special Brake Systems

• Electric parking brakes require special procedures before brake pad replacement due to their unique designs.
• Low brake pedal issues may result from either an incorrectly adjusted pedal or overheating brake fluid.

Brake Testing and Inspection

• Checking the inside diameter of brake drums requires measuring the largest point for accuracy.
• A low spongy brake pedal can stem from various systemic issues, excluding worn brake pads.

Maintenance Practices

• Rubber brake components should be lubricated with high-temperature silicon-based lubricants.
• A dropping brake pedal after starting the engine may indicate normal vacuum assistance behavior.

Common Issues

• A hard brake pedal can result from a malfunction in the brake booster, such as loss of vacuum.
• Over-tightening a wheel can lead to various complications in brake performance and wear.

Performance Evaluation

• Clicking noises from an ABS system upon startup are often normal and not indicative of a problem.
• Excessive vibrations during braking can signal issues such as rusty hub flanges or sticking calipers.

Troubleshooting

• Diagnosing pulling to one side while braking usually points to a seized caliper or line restrictions.
• Checking a brake booster diaphragm involves observing pedal pressure over time after engine shutdown.