If the pump should fail in a hydraulic power assisted steering system:

The mechanical steering system must still operate

Engine will automatically go into reduced power mode

Steering lock will engage to prevent vehicle being used

Immobiliser will prevent vehicle being used until repair

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

The wiring harness is disconnected from the modulator

The wiring harness is connected to the pump

The vehicle ignition is switched off

Electronic brake force distribution (EBD) when applied to a light vehicle:

Controls brake force by sensing the slip ratio of tyres

Controls brake force at rear wheels when unladen

Controls brake force at wheels by measuring load of axles

Controls brake force at wheels through road surface temp

Diagram represents wave form from inductive ABS sensor. As 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

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

Connect an oscilloscope across output pins spin the wheel

An ABS sensor cannot be checked in situ

Connect ammeter across output pins should be 20 amps

Connect a voltmeter across sensor output should be 5 volts

Diagram shows electrically controlled self levelling suspension. Increasing length of X will

Increase the vehicle ride height

Decrease the suspension reaction time

Increase the suspension reaction time

Decrease the vehicle ride height

After replacing levelling sensor on electronically controlled self levelling suspension you?

Manually operate suspension through its full range of travel

Carry out road test with vehicle fully loaded

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

Carry out a road test on uneven ground

A faulty yaw sensor will most likely cause:

The electronic stability control warning light to illuminate

the ABS warning light to illuminate

The electronic diesel warning light to illuminate

The electronic power steering warning light to illuminate

The castor angle is the inclination of the steering axis when

Viewed from the side of the vehicle

Viewed from the rear of the vehicle

Viewed from the front of the vehicle

The amount of assistance provided by electric power steering is changed by:

Changing current to the motor in relation steering torque

Changing gear ratio between column and rack

Changing gear ratio between column and torque control unit

Changing voltage to motor in relation steering shaft torque

A 4WDs rear tyres has feathered outer edges. Adjustment is in front of rear axle. You would

Increase length of rear track rods

Increase amount of rear wheel positive caster

Decrease length of rear track rods

Decrease amount of rear wheel positive castor

One symptom of self levelling suspension not operating on a laden estate car could be:

Headlights could dazzle oncoming drivers at night

Vehicle would under steer when cornering

Engine management would reduce engine power

Hydraulic power steering could become lighter than normal

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

When discussing coefficient of friction it can be said that:

Coefficient of static friction higher than dynamic friction

Coefficient of dynamic friction higher than static friction

Coefficient of friction constant whether moving or static

Coefficient of static friction lower than dynamic friction

When measuring current consumption of ABS solenoid it's important that:

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

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

Confirm light and plug in fault code reader

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

Replace motor, clean connectors and check light goes out

Take on road test and see if light goes out

When checking track rod ends on rear wheels on four wheel steer car 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 with wheels on turntables

Rock steering back and forth producing false signal to ECU

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

Each control unit sends/receives data packets on databus

Each control unit sends/receives varying voltages on databus

Each control unit working independently from others

Each control unit sends/receives varying resistances databus

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

One advantage of power assisted steering over manual steering on a light vehicle is:

A low steering box ratio reducing the number of turns

A high steering box ratio increasing the number of turns

A low steering box ratio increasing the number of turns

A high steering box ratio reducing the number of turns

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When cornering a vehicle with electronically controlled air suspension will:

Increase pressure to the inner spring immediately

Decrease pressure to the inner spring immediately

Increase pressure to the inner spring after a short delay

Increase pressure to the outer spring after a short delay

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

Gauges on rear wheels, adjusting 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

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A coil Spring is subjected to three forces during normal operation. These forces are:

Compressive, tensile and torsional

Shear, bending and compressive

Tensile, compressive and shear

Compressive, shear and torsional

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A test on an ABS wheel sensor is open circuit. An acceptable repair would be to:

Replace the sensor and wiring back to the nearest connector

Cut out damaged section of wiring and splice in new section

Replace wiring nearest connector sensor,splicing at sensor

Replace both sensors on same axle as the supplied in pairs

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

Sensing the deceleration force of the vehicle

Sensing a sudden drop in amplitude from a wheel sensor

Sensing a sudden drop in speed from vehicle tachograph

Sensing a sudden drop in AC voltage from a wheel sensor

MULTIPLE CHOICE QUESTION

1 min • 1 pt

ABS light on round left corner. Fault code intermittent incompatible speed signal NSF sensor?

Poor connection NSF sensor when suspension extends

Poor connection NSF sensor each time suspension compresses

Unequal air gaps NSF and OSF sensor causing voltage to drop

Excessive play in front wheel bearing causing sensor to move

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