when a traction control system senses wheel slip it will ?

limit the engine RPM and brake slipping wheel

automatically brake both wheels

Reduce engine RPM and brake both wheels

One advantage of power assisted steering is......

A high steering box ratio reducing the number of turns

A low steering box ratio increasing the number of turns

A hgh steering box ratio increasing the number of turns

A low steering box ratio reducing the number of turns

How would the thrust angle be set on a light vehicle?

Place alignment Gauges on rear wheels, adjust parallel to the centre line

Gauges on same side adjusting parallel to centre line

Gauges on front wheels adjusting equal from front of vehicle

Gauges on front wheels adjusting parallel to centre line

An ABS control unit calculates that a wheel is about to lock by,

sensing a sudden drop in AC voltage from the wheel speed sensor.

Sensing the deceleration force of the vehicle.

sensing a sudden drop in DC voltage from the wheel speed sensor.

sensing a sudden drop in speed from the vehicle tachograph.

When checking resistance in ABS modulator valve it's essential that:

The wiring harness is disconnected from the ABS modulator

The wiring harness is connected to the pump

The vehicle ignition is switched off

What state are the shift valves in when ABS is not in use?

Half open to allow fluid through

A faulty yaw sensor will most likely cause:

The electronic stability control warning light to illuminate

The electronic diesel warning light to illuminate.

the ABS warning light to illuminate

The electronic power steering warning light to illuminate

One symptom of self levelling suspension not working on a laden estate car would be....

The headlights could dazzle oncoming drivers at nighttime

The hydraulic PAS would become lighter than normal

The vehicle would tend to understeer when cornering

The engine management system would put the car into limp mode

The definition of the term 'castor angle' is defined as:

Angle of road wheel steering axis viewed at side of vehicle

Inclination of road wheel to vertical axis side of vehicle

Angle of road wheel steering axis viewed above vehicle

Inclination road wheel to vertical axis front of vehicle

This diagram represents a wave form from an inductive ABS sensor. As the wheel speed increases, the:

Voltage increases and frequency increases

Voltage remains the same and frequency the same

Voltage increses and frequency remains same

Voltage remains same and frequency increases

What type of wave form does this picture show?

CANbus High / Low signal wave form

The electronic brake force distribution (EBD) system on a light vehicle controls the brake system by.....

monitoring the slip ratio of the tyres on the road

monitoring the load applied to the front and rear axles

reducing the brake force when the vehicle is unladen

monitoring road surfaces using moisture and temp sensors

Which of the following checks would determine the serviceability of an ABS sensor in situ ?

connect an oscilloscope across the sensor output pins and rotate the wheel.

connect a voltmeter across the sensor output pins reading should be 5 volts

an ABS sensor cannot be tested in situ.

connect an ammeter across the sensor output pins reading should be 20 amps.

When discussing the coefficient of friction, it can be said that:

Dynamic coefficient of friction is lower than static

coefficient of friction is equal whether static or dynamic

Dynamic coefficient of friction is higher than static

dynamic and static have the same coefficient

When measuring the current consumption of an ABS solenoid....

The ammeter must be connected in series

The ohmmeter must be connected in parallel

The Ohmmeter must be connected in series

The ammeter must be connected in parallel

After replacing the levelling sensor on electronically controlled self levelling suspension, you should......

Manually operate suspension through its full range of travel

Carry out road test with vehicle fully loaded

Carry out a road test on uneven ground to check the system

Bounce on each corner of vehicle in turn to check self level

The EPAS warning light is on. Which is a suitable approach to diagnosing the fault?

Confirm the fault light and plug in the fault code reader.

Turn the steering wheel from lock to lock see if the light goes out.

Carry out a full road test to see if the light stays on or goes out.

Replace the motor, clean the connectors and check the light goes out

When checking the track rod ends on rear wheels on four wheel steer, it's necessary to:

Rock steering back and forth with wheels on ground or ramp

Rock steering back and forth with wheels off ground

Rock steering back and forth to force the ABS / ESP light to come on.

Rock steering back and forth with wheels on turntables

During hard braking what is the proportioning valve restricting ?

Pressure in the master cylinder

The diagram shows a layout of a communication network. The system operates by:

Each control unit sending / receiving data packets via a databus

Each control unit sends/receives varying voltages via a databus

Each control unit working independently from others

Each control unit sending / receiving varying resistances via a databus

For failsafe operation, the ABS solenoid valves are.....

oscillate between open and closed

the front slip angle is larger than the rear slip angle

the front slip angle is smaller than the rear slip angle

the front slip angle is the same as the rear slip angle

the rear slip angle is larger than the front slip angle

The acronym ' EBD ' stands for

Electronic Brake-force Distribution

Electronic Brake force Depressurisation

Electronic Brake force Diversion

Electronic Brake force Diagnostics

When a wheel locks during the braking of a vehicle fitted with ABS, the modulator action will be:

Pressure realease, pressure maintain, pressure increase

Pressure realease, Pressure increase, Pressure Maintain

Pressure maintain, pressure release, pressure increase

Pressure increase, Pressure Maintain, Pressure realease

What 3 forces are coil springs subjected to during driving

compression, tension and torsional

compression, shear and torsional

One cause of a vehicle having excessive front wheel tyre wear would be:

steering torque sensor is inoperative

The component that senses the driver's turning effort in an EPAS system is the.....

Hydraulic PAS pressure relief valve

If a pump fails on a hydraulic power steering system.....

The mechanical steering must still be able to operate

The engine will cut to reduced power / limp mode

The steering lock will engage to prevent vehicle usage

The engine immobiliser will cut in to prevent vehicle usage

With regards to light vehicles, the camber angle is defined as the....

Inclination of wheel to the vertical viewed from the front

angle of the wheel from the vertical axis viewed from above

inclination of the wheel to the vertical axis from the side

angle of wheel relative to vertical axis viewed from side

An advanced ride control system, when applied to a light vehicle......

Monitors the pitch of the vehicle & over-rides the throttle & brake input.

Monitors the pitch of the vehicle & is over ridden by the throttle & brakes

Monitors the yaw of the vehicle & over-rides the drivers throttle and brake

Monitors the yaw of the vehicle & is over-ridden by the throttle and brakes

Three advantages of electric power steering over hydraulic power steering are:

Better fuel economy, less complex, weighs less

Better fuel economy, easier to fix, maintenance free

Better fuel economy, lower tyre wear, used in reverse park

Better fuel economy, weighs less, self-maintaining

Ultimate LV08 chassis quiz

Authored by Seann Hodson

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52 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of waveform does a Hall Effect sensor produce?

Sine wave

Square wave

Digital waveform

sawtooth waveform

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of waveform does an Inductive sensor produce?

Digital waveform

Square Wave form

digital signal wave form

Sine wave form

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the AC signal produced by a Hall Effect Wheel speed sensor when the wheel speed increases?

The frequency increases but the amplitude stays the same

The Amplitude increases but the frequency stays the same

The frequency and amplitude decrease

The frequency and amplitude both increase

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the AC signal produced by an inductive wheel speed sensor as the vehicle wheel speed increases?

The Frequency increases but the amplitude stays the same

The amplitude increases but the Frequency remains the same

Both the Frequency and amplitude of the Square wave pattern increase

Both the frequency and Amplitude of the Sine wave pattern increase.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When cornering, a vehicle with electronically controlled air suspension will,

Immediately provide more air pressure to the air springs on the outside

Provide more air pressure to the air springs on the outsidebend short delay

Immediately provide more air pressure to the air springs on the inside bend

Provide more air pressure to the air springs on the inside bend short delay

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As part of the MOT test, which THREE checks are carried out on PAS system?

Play under load, lock to lock check & static inspection

Play under load, hydraulic system pressure inspection

Static inspection, vehicle road test & play under load.

Full lock check, play under load & hydraulic pump condition

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Steering Wheel free play can be caused by ......

Inoperative EPAS

Worn track rod ends

Incorrect tyre combinations

Incorrect wheel alignment

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Ultimate LV08 chassis quiz

What type of waveform does a Hall Effect sensor produce?

What type of waveform does an Inductive sensor produce?

What happens to the AC signal produced by a Hall Effect Wheel speed sensor when the wheel speed increases?

What happens to the AC signal produced by an inductive wheel speed sensor as the vehicle wheel speed increases?

When cornering, a vehicle with electronically controlled air suspension will,

As part of the MOT test, which THREE checks are carried out on PAS system?

Steering Wheel free play can be caused by ......

when a traction control system senses wheel slip it will ?

One advantage of power assisted steering is......

What is the maximum slip angle tolerance?

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