CH.107 ABS DIAGNOSIS & SERVICE 5TH
EDITION EXAM QUESTIONS WITH
CORRECT ANSWERS
True about the Teves Mark IV ABS - Answer-Driving a vehicle over 20 mph will clear
the diagnostic trouble codes in a Teves Mark IV
2 Techs discussed the methods of retrieving diagnostic trouble codes from a Kelsey-
Hayes Rear Wheel Antilock (RWAL). Tech A stated that diagnostic trouble codes can
be retrieved by flash codes. Tech B stated that they can be retrieved by the use of a
scan tool. - Answer-Both Tech A & B
The owner of an S-10 pickup truck complained that the red brake warning lamp on the
dash remained on even when the parking brake was released. The problem could be
________. - Answer-low brake fluid
2 Techs discussed the antilock brake system (ABS) safety precautions. Tech A stated
that tires of different diameter than that of the original tires should not be mounted. Tech
B stated that the hydraulic line should never be loosened while the ABS is pressurized. -
Answer-Both Tech A & B
True about Wheel Speed Sensors - Answer-A bent axle or hub will produce a wavelike
pattern that fluctuates as the strength of the sensor signal changes with each revolution.
True about brake warning lamps - Answer-The red brake warning lamp comes on if the
parking brake is applied
When installing new WSS, look for a piece of _____________________ on the tip end
of the unit. - Answer-Paper or plastic
The _________________ usually comes on after an engine start during the initialization
or start-up self-test sequence. - Answer-Amber ABS Warning Lamp
A bent axle or hub will produce a wavelike patter that _________________ as the
strength of the sensor signal changes with each revolution. - Answer-fluctuates
Do not pry against or hit the wheel speed sensor ____________. - Answer-ring
Test a digital WSS by first checking that ______________ is available at the sensor
with the key on, engine off. - Answer-battery voltage
EDITION EXAM QUESTIONS WITH
CORRECT ANSWERS
True about the Teves Mark IV ABS - Answer-Driving a vehicle over 20 mph will clear
the diagnostic trouble codes in a Teves Mark IV
2 Techs discussed the methods of retrieving diagnostic trouble codes from a Kelsey-
Hayes Rear Wheel Antilock (RWAL). Tech A stated that diagnostic trouble codes can
be retrieved by flash codes. Tech B stated that they can be retrieved by the use of a
scan tool. - Answer-Both Tech A & B
The owner of an S-10 pickup truck complained that the red brake warning lamp on the
dash remained on even when the parking brake was released. The problem could be
________. - Answer-low brake fluid
2 Techs discussed the antilock brake system (ABS) safety precautions. Tech A stated
that tires of different diameter than that of the original tires should not be mounted. Tech
B stated that the hydraulic line should never be loosened while the ABS is pressurized. -
Answer-Both Tech A & B
True about Wheel Speed Sensors - Answer-A bent axle or hub will produce a wavelike
pattern that fluctuates as the strength of the sensor signal changes with each revolution.
True about brake warning lamps - Answer-The red brake warning lamp comes on if the
parking brake is applied
When installing new WSS, look for a piece of _____________________ on the tip end
of the unit. - Answer-Paper or plastic
The _________________ usually comes on after an engine start during the initialization
or start-up self-test sequence. - Answer-Amber ABS Warning Lamp
A bent axle or hub will produce a wavelike patter that _________________ as the
strength of the sensor signal changes with each revolution. - Answer-fluctuates
Do not pry against or hit the wheel speed sensor ____________. - Answer-ring
Test a digital WSS by first checking that ______________ is available at the sensor
with the key on, engine off. - Answer-battery voltage
