Electronic Brake Control - Post

35 Questions

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Electronic Quizzes & Trivia

Chapter 35


Questions and Answers
  • 1. 
    Tech A says that the purpose of an anti-lock braking system is to prevent the wheels from locking during braking, especially on low-friction surfaces such as wet, icy, or snowy roads. Tech B says that the anti-lock braking system does not mean a vehicle can stop quickly on all road surfaces. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 2. 
    The brake switch sends an electronic signal to which of the following?
    • A. 

      Brake lights

    • B. 

      Electronic brake control module

    • C. 

      Both A and B

    • D. 

      None of the above

  • 3. 
    Which of the following typically reports the vehicle's speed to the electronic brake control module?
    • A. 

      Wheel speed sensor

    • B. 

      Vehicle speed sensor

    • C. 

      Both A and B

    • D. 

      None of the above

  • 4. 
    True or False. Some anti-lock braking systems require a scan tool that connects to the electronic brake control module or power train control module to read the fault codes.
    • A. 

      True

    • B. 

      False

  • 5. 
    Which of the following is a typical sensor used by the electronic stability control system?
    • A. 

      Yaw sensor

    • B. 

      Steering angle sensor

    • C. 

      Roll-rate sensor

    • D. 

      All of the above

  • 6. 
    True or False. Some traction control systems can be temporarily deactivated by a traction control system function switch located on the dash or center console.
    • A. 

      True

    • B. 

      False

  • 7. 
    Which of the following is used to diagnose an anti-lock braking system fault?
    • A. 

      DVOM

    • B. 

      Oscilloscope

    • C. 

      Both A and B

    • D. 

      None of the above

  • 8. 
    Wheel speed sensors should be checked for which of the following with a DVOM?
    • A. 

      Open

    • B. 

      Ground

    • C. 

      High resistance

    • D. 

      All of the above

  • 9. 
    The tone wheel used on an anti-lock braking system's wheel speed sensors should be checked for which of the following?
    • A. 

      Broken teeth

    • B. 

      Damaged teeth

    • C. 

      Missing teeth

    • D. 

      All of the above

  • 10. 
    True or False. On a vehicle with an electronic brake control module, if the yellow warning lamp is not illuminated and the brakes are not functioning properly, suspect a problem that is not monitored by the electronic brake control module.
    • A. 

      True

    • B. 

      False

  • 11. 
    Which of the following modules executes the commands of the anti-lock braking system control module?
    • A. 

      Power train control module

    • B. 

      Transmission control module

    • C. 

      Hydraulic control module

    • D. 

      None of the above

  • 12. 
    Typical hydraulic control units for electronic brake control systems can have how many channels?
    • A. 

      Two

    • B. 

      Three

    • C. 

      Four

    • D. 

      All of the above

  • 13. 
    If there is a fault with the hydraulic control unit, typically the unit is which of the following?
    • A. 

      Serviceable in the field

    • B. 

      Not serviceable in the field

    • C. 

      Both A and B

    • D. 

      None of the above

  • 14. 
    True or False. Wheel speed sensors send electric signals to the electronic brake control module to determine speed and rate of deceleration of each wheel.
    • A. 

      True

    • B. 

      False

  • 15. 
    True or False. Wheel sensor assemblies are comprised of a toothed tone wheel and a pick-up assembly, separated by a metal plate.
    • A. 

      True

    • B. 

      False

  • 16. 
    Tech A says that all traction control systems apply the brakes as a first step and reduce engine power. Tech B says that some traction control systems do not apply the brakes as a first step but reduce engine power. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 17. 
    Tech A says that wheel speed senor operation can be tested with a DVOM. Tech B says that wheel speed senor operation can be checked with an oscilloscope. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 18. 
    Tech A says that if the yellow warning lamp is illuminated indicating a fault in the electronic brake control system, you should retrieve the diagnostic trouble codes and follow the procedure listed in the service information. Tech B says that if the yellow warning lamp is not illuminated and the brakes are not functioning properly on a vehicle with an electronic brake control system, you should suspect a problem that is not monitored by the electronic brake control module. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 19. 
    Which of the following is MOST likely to be in an electronic brake control module?
    • A. 

      Electronic circuitry

    • B. 

      Computer memory

    • C. 

      Output drivers

    • D. 

      All of the above

  • 20. 
    Which of the following is LEAST likely to be an input to an electronic brake control module?
    • A. 

      Crank sensor

    • B. 

      Ignition switch

    • C. 

      Battery

    • D. 

      All of the above

  • 21. 
    Tech A says that bleeding an electronic brake control system is just like bleeding a non–electronic brake control system. Tech B says that if air is allowed into the electronic brake control system, it can become trapped in the hydraulic control unit, requiring a scan tool to operate the solenoid valves to help bleed the air from the electronic brake control system. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 22. 
    Which brake fluid is LEAST likely to be used in an electronic brake control system?
    • A. 

      DOT 4

    • B. 

      DOT 5

    • C. 

      Both A and B

    • D. 

      None of the above

  • 23. 
    Tech A says that some anti-lock braking systems do away with the mechanical proportioning valve. Tech B says that the electronic brake control module performs an automatic self-check and warning lamp bulb check on the anti-lock braking system every time the key is turned to the “run” position. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 24. 
    All of the following are typical methods of reducing power in the vehicle when the electronic brake control module requests reduced power, EXCEPT:
    • A. 

      Reducing the throttle plate opening.

    • B. 

      Shutting down one or more injectors.

    • C. 

      Reducing the engine timing.

    • D. 

      Selecting a lower gear in the transmission.

  • 25. 
    Tech A says that a typical wheel speed sensor can be faulty due to a sensor resistance problem. Tech B says that a typical wheel speed sensor could be faulty due to no voltage supply. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 26. 
    Tech A says that in some cases, the electronic brake control module can be programmed with a new tire size to restore proper electronic brake control performance. Tech B says that there could be an electronic brake control module available for installation that matches a new tire size. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 27. 
    Once all of the lug nuts have been torqued, go around them again, this time in a _______________ to ensure that you did not miss any in the previous pattern.
    • A. 

      Star pattern

    • B. 

      Circular pattern

    • C. 

      Alternating pattern

    • D. 

      None of the above

  • 28. 
    Tech A says that when the brake pedal is depressed, a push rod creates the hydraulic pressure in the disc brake system. Tech B says that when the brake pedal is depressed, a push rod transfers the force through a brake booster to a hydraulic master cylinder. Who is correct? 
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 29. 
    Which of the following is/are LEAST likely to be used to reduce disc brake squeal?
    • A. 

      Shims

    • B. 

      Spacers

    • C. 

      Axle grease

    • D. 

      Bendable tangs

  • 30. 
    Tech A says that burnishing the new brake pads results in longer brake pad life. Tech B says that burnishing the new brake pads results in quiet brake life. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 31. 
    Brake fluid is graded by the Department of Transportation on which of the following? 
    • A. 

      Color

    • B. 

      PH value

    • C. 

      How much water it can hold

    • D. 

      All of the above

  • 32. 
    ___________________ carry brake fluid from the master cylinder to the brake units.
    • A. 

      Double-walled steel lines only

    • B. 

      Rubber hoses only

    • C. 

      Doubled-walled steel lines and rubber hoses

    • D. 

      None of the above

  • 33. 
    Tech A says that proportioning valves reduce brake pressure to the rear wheels and are pressure-sensitive or load-sensitive. Tech B says that load-sensitive proportioning valves adjust rear brake pressure according to the weight of the vehicle's load. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 34. 
    Tech A says that using gasoline is an approved method of cleaning brake system components. Tech B says that using kerosene is an approved method of cleaning brake system components. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 35. 
    Tech A says that when replacing a brake master cylinder, it should be bled after placing the master cylinder into the vehicle's brake system. Tech B says that when replacing a master cylinder, it should be bench bled before the master cylinder is placed into the vehicle's brake system. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B