BRAKES CH111 - ABS DIAGNOSIS &
SERVICE EXAM QUESTIONS WITH
CORRECT ANSWERS
All of the above - Answer-What safety precautions should be adhered to when working
on or around a vehicle equipped with ABS?
a. Avoid mounting any antenna near the ABS control unit
b. Never open a bleeder valve or an hydraulic line while the ABS is energized
c. Do not pry against or on a wheel speed sensor
d. All of the above
Both Technicians A and B - Answer-Technician A says that the ABS electrohydraulic
unit can be bled using bleeder screws and the manual method. Technician B says that a
scan tool is often required to bleed the ABS electrohydraulic unit. Which technician is
correct?
a. Technician A only
b. Technician B only
c. Both Technicians A and B
d. Neither Technician A nor B
Frequency - Answer-The ABS controller uses what signal characteristic from a wheel
speed sensor?
a. Voltage
b. Frequency
c. Resistance
d. Electromagnetic
False - Answer-The use of the small spare tire may trigger the red brake warning lamp.
a. True
b. False
Both Technicians A and B - Answer-Technician A says that, with some antilock braking
systems, the diagnostic trouble code may be lost if the ignition is turned off before
retrieving the code. Technician B says that some antilock braking systems require that a
terminal be grounded to cause the amber ABS warning lamp to flash diagnostic trouble
codes. Which technician is correct?
a. Technician A only
b. Technician B only
c. Both Technicians A and B
d. Neither Technician A nor B
Technician A only - Answer-Technician A says that a scan tool may be required to
retrieve data and diagnostic trouble codes from some antilock braking systems.
SERVICE EXAM QUESTIONS WITH
CORRECT ANSWERS
All of the above - Answer-What safety precautions should be adhered to when working
on or around a vehicle equipped with ABS?
a. Avoid mounting any antenna near the ABS control unit
b. Never open a bleeder valve or an hydraulic line while the ABS is energized
c. Do not pry against or on a wheel speed sensor
d. All of the above
Both Technicians A and B - Answer-Technician A says that the ABS electrohydraulic
unit can be bled using bleeder screws and the manual method. Technician B says that a
scan tool is often required to bleed the ABS electrohydraulic unit. Which technician is
correct?
a. Technician A only
b. Technician B only
c. Both Technicians A and B
d. Neither Technician A nor B
Frequency - Answer-The ABS controller uses what signal characteristic from a wheel
speed sensor?
a. Voltage
b. Frequency
c. Resistance
d. Electromagnetic
False - Answer-The use of the small spare tire may trigger the red brake warning lamp.
a. True
b. False
Both Technicians A and B - Answer-Technician A says that, with some antilock braking
systems, the diagnostic trouble code may be lost if the ignition is turned off before
retrieving the code. Technician B says that some antilock braking systems require that a
terminal be grounded to cause the amber ABS warning lamp to flash diagnostic trouble
codes. Which technician is correct?
a. Technician A only
b. Technician B only
c. Both Technicians A and B
d. Neither Technician A nor B
Technician A only - Answer-Technician A says that a scan tool may be required to
retrieve data and diagnostic trouble codes from some antilock braking systems.
