DSL-204 Chap 37 Anti-Lock Braking, Veh Stability, Collision Sys.

________ braking takes place because the control logic inside the ECU can distinguish between normal and abnormal deceleration using an algorithm to calculate whether decelerating wheels are likely to lockup.

• Hard

• Controlled

• Differential

• Rapid

What occurs when the drive or steer tires have stopped rotating when braking?

• Fishtailing

• Oversteer

• Wheel slip

• Wheel lock-up

An ABS control module on a trailer must be capable of being powered by the trailer's _______.

• Back-up light circuit

• Ground circuit

• Tail light circuit

• Stop lamp circuit

Technician A says FMVSS 121 has introduced shorter stopping requirements for heavy trucks-stopping distances have been reduced and new standards include stricter vehicle stability requirements. Technician B says systems must prevent trailer swing-out and jackknifing, and tractors and trailers currently need to remain within an 18-foot-wide (5.48-meter-wide) lane under hard braking conditions. Who is correct?

• Technician A only

• Technician B only

• Both Technician A and Technician B

• Neither Technician A nor Technician B

During normal braking applications, the modulator valves are NOT _______.

• Conductive

• Adaptive

• Active

• Inactive

After the introduction of ABS, which wire was specified to be dedicated to supply continuous current to the trailer ABS system?

• #4 yellow

• #5 red

• #6 green

• #7 blue

When the ABS configuration equips the wheels of only one tandem axle with air suspension, the wheel speed sensors are generally located on the ________.

• Axle housing

• Mounting block

• Lead axle

• Trailing axle

What causes the front drive axle tires to grip the road better during braking?

• Sensor weight shift

• Modulated weight shift

• Inertia weight shift

• Inertia cargo shift

Which of the following is NOT a common ABS configuration for tractors?

• 4S/3M

• 4S/4M

• 6S/4M

• 6S/6M

With traction control, a tire that has lost traction and is __________ is instantly identified by comparison with the other wheel speeds on the vehicle.

• Spinning too fast

• Spinning too slow

• Stopped

• Sliding