ABS, ESC & Misc Questions

Electronic Stability Control (ESC) requires how many speed sensors?

• 1

• 2

• 3

• 4

What will happen to the ESC light when the system is activated?

• It will turn on

• It will change color

• It will flash

• It will go out

Which of the following is true about ABS systems?

• ABS systems are only for unskilled drivers

• ABS systems will function normally if the amber “ABS” light is on while driving

• ABS accumulators do not store high pressures

• ABS accumulators often need to be discharged before opening the hydraulic system for bleeding or service

Which of the following contain ABS/ESC inputs?

• Wheel speed sensor, ABS pump, Yaw Sensor

• Yaw Sensor, Steering Angle Sensor, Wheel Speed Sensor

• Accumulator, Yaw Sensor, Steering Angle Sensor

• Caliper, Yaw Sensor, Wheel Speed Sensor

ABS & ESC codes are retrieved by:

• DVOM's (Digital Volt Ohm Meter)

• Oscilloscope

• Scan Tool

• Iphone

Which of these needs to be calibrated during an alignment?

• Steering Angle Sensor

• ABS control module

• Yaw Sensor

• Brake lamp switch

Which of the following is true when it comes to ABS system safety?

• A) ABS systems can reach high pressure (over 2,000 psi)

• B) Accumulators pressure need to be discharged before opening the hydraulic systems.

• C) Accumulators can often be discarded by depressing the brake pedal 25-50 times.

• All 3 answers are correct

2 techs are discussing the ABS system. Tech A says that the only function of ABS components is to prevent wheel lock up in an emergency stop. Tech B says the ABS system is used to operate vehicle stability systems. Who is correct?

• Tech A

• Tech B

• Both Techs

• Neither Tech

2 techs are discussing backing plates. Tech A says that the backing plates holds the shoes, wheel cylinders and hardware inside the drum. Tech B says ridges on the brakes shoe mounting pads should be filed down and greased when performing a brake job. Who is correct?

• Tech A

• Tech B

• Both Techs

• Neither Tech

Brakes lines should be made of:

• Copper

• Single Wall Steel

• Double wall steel

• High pressure plastic