ABSActuatorQuizabout https://www.youtube.com/watch?v=-IUZWwMm7nY

What happens to the electric current flow from the ECU to the hydraulic unit during normal braking?

• It remains constant

• It increases

• It stops

• It decreases

What action energizes the solenoid valve in the hydraulic unit when severe wheel deceleration is detected?

• Decreasing brake pressure

• Isolating the brake circuit

• Sending brake fluid back to the master cylinder

• Sending a current from the ECU

What is the purpose of opening a passage from the brake circuit to the master cylinder in the hydraulic unit?

• To energize the solenoid valve

• To isolate the brake circuit

• To decrease brake pressure

• To increase brake pressure

How many times does the cycle of changing brake pressure repeat itself in an ABS per second?

• 2-4 times

• 4-6 times

• 6-8 times

• 8-10 times

What may be felt through the brake pedal due to the changes in position of the valves and the hydraulic control unit?

• Noise

• Heat

• Vibrations

• Resistance

What does the ABS control module constantly monitor for during normal braking?

• Rapid acceleration

• Brake fluid level

• Rapid deceleration

• Wheel lock-up

What is the purpose of the solenoid valve in the hydraulic unit?

• To increase brake pressure

• To decrease brake pressure

• To isolate the brake circuit

• To energize the ECU

What happens to the pressure in the brake caliper circuit when the solenoid valve opens a passage from the brake circuit to the master cylinder?

• It increases

• It decreases

• It remains constant

• It stops

What does the ECU do if the wheel sensors indicate that lowering the brake pressure is letting the wheel accelerate again?

• Decreases the brake pressure

• Sends a larger current to the hydraulic unit

• Stops sending current to the hydraulic unit

• Energizes the solenoid valve

What is the role of the armature in the hydraulic unit when the wheel sensors indicate severe wheel deceleration?

• Moves to close the valve

• Moves to open the valve

• Moves to isolate the brake circuit

• Moves to energize the ECU