Deck 16: Antilock Brakes, Vehicle Stability Control, and Power Assist

Question 1

If a wheel locks during braking, wheel speed sensor data will show a ........in the number of rotations for the wheel.

Answer 1

decrease

Question 2

A vacuum ........is used to keep a reservoir of vacuum in the power brake booster in the event the engine stops running.

Answer 2

check valve

Question 3

Which of the following is not a common ABS configuration?

A)Rear wheel antilock
B)Four wheel antilock
C)Front wheel antilock
D)Three wheel antilock

Answer 3

C

Question 4

A vehicle has illuminated red BRAKE and yellow ABS lights: Technician A says a thorough inspection of the brake system should be performed.Technician B says to check for store DTCs.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 5

Which of the following tools can be used to check AC voltage-generating wheel speed sensors?

A)Oscilloscope
B)Scan tool
C)Digital multimeter
D)All of the above

Question 6

Traction control systems are designed to reduce ........to slipping drive wheels.

Question 7

Vehicles with stability control use a multiple ........to determine vehicle movement.

Question 8

Two technicians are discussing bleeding the hydraulic brake system on an ABS-equipped vehicle: Technician A says special bleeding procedures may be required purge all of the air from the system.Technician B says some antilock systems require using a scan tool to bleed the system.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 9

All of the following are modes of ABS operation except:

A)Pressure increase mode
B)Release mode
C)Hold mode
D)Calibration mode

Question 10

ABS units that combine functions of the master cylinder, ABS control, and power assist are called ........systems.