The EPAS warning light is consistently illuminated, which of the following would be suitable to diagnosing the fault?, Confirm that the light is on and connect a fault code reader to the system, Take the vehicle on the road test to check if the light goes out, Replace the motor, clean the connectors and check if the light goes out, Turn the steering from lock-to-lock and check if the light goes out, If the pump should fail in a hydraulic power assisted steering system, The mechanical steering system must still be able to operate, The engine will automatically go into reduced power mode, The steering lock should automatically engage to prevent the vehicle usage, The immobiliser should prevent the vehicle being used until repaired, During traction control operation..., The brake is applied on the non-spinning wheel until traction is regained, The brake is applied on the spinning wheel until traction is regained, The brake is rapidly applied and released on the non-spinning wheel, The brake is rapidly applied and released on the spinning wheel, On a vehicle fitted with EPAS system, the component that senses that drivers turning effort is a..., Steering speed sensor, Torque sensor, Flow control valve, Control pump, The diagram shown is an electronically controlled self-levelling suspension, increasing the length of linkage X will..., Increase the vehicle ride height, Decrease the suspension reaction time, Decrease the vehicle ride height, Increase the suspension reaction time, Which steering angle gives a self-centering action on a light vehicle?, Castor, Camber, Swivel pin inclination, Negative offset, The output voltage from an inductive wheel speed sensor can be measured using, A voltmeter set to 10-100 volts DC, A voltmeter set to 0-10 volts AC, A voltmeter set to 0-10 volts DC, A voltmeter set to 10-100 Volts AC, ABS exciter ring is checked for run-out, the DTI moved from 0 anti-clockwise to the position shown, run- out max is 0.2mm, In tolerance by 0.7mm, Out of tolerance by 0.1mm, In tolerance by 0.07mm, Out of tolerance by 0.85mm, During hard braking, an unsecure load in the boot of a vehicle will slide forwards due to..., Normal force, Gravitational force, Inertia force, Centrefugal force, ABS warning light illuminates on a left hand corner, the fault is intermittent on code, the fault is most likely to be..., Excessive play in the front wheel bearing, causing air gap to increase, Unequal air gap, which causes the signal voltage to drop when coming, A poor connection causes open circuit each time the suspension extends, A poor connection causes open circuit each time the suspension compresses, The diagram represents a wave form from an inductive wheel speed sensor, as the wheel speed increases the, Voltage increases and the frequency increases, Voltage increases and the frequency remains the same, Voltage remains the same and the frequency increases, Voltage remains the same and the frequency remains the same, Which of the following checks would determine the serviceability of an ABS sensor in situ?, Connect a voltmeter across the sensor output pins reading should be 5 volts, Connect an oscilloscope across the sensor output pins and rotate the wheel, An ABS sensor cannot be tested in situ, Connect an ammeter across the sensor output pins reading should be 20 amps, In the diagram of the ABS system, what is the function of the modulator?, Controlling hydraulic pressure in the brake lines, To reduce the amount of pedal effort required by the driver, Storage of hydraulic pressure to maintain system pressure, To determine when ABS assistance is required, After replacing a chassis levelling sensor on an electronically controlled levelling suspension, what else must be done?, The air bag pressure should be set, The minimum chassis lowered height should be set, The maximum chassis raised should be set, The chassis ride height should be calibrated, One advantage of a vehicle fitted with EPAS over a vehicle fitted with hydraulic power steering is..., Improved fuel economy, Less steering effort, No torque sensing required, Reduced steering rack ratio, A test on an ABS Wheel speed sensor shows that it is open circuit. An acceptable repair would be to..., Cut out the damaged section of wiring and splice in a new section, Replace the sensor and it's wiring back to the nearest connector, Replace the wiring from the nearest connector to the sensor splicing it, Replace both sensors on the axle as they are supplied in pairs, How would the thrust angle usually be set on a light vehicle?, Place alignment gauges on the wheels on the same side adjusting parallel, Placing alignment gauges on the front wheels to be equal distance, front, Placing alignment gauges onto the rear wheels adjusting them to be parallel, Placing alignment gauges on the front wheels, adjusting them to be parallel, When cornering, a vehicle with electronically controlled air suspension will..., Immediately provide more air pressure to the air springs on the outside bend, Provide more air pressure to the air springs on the outside bend 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, When checking the condition of the steering on the rear wheels of a four-wheel steer vehicle, it is necessary to..., Rock the steering back and forth while producing a false high speed signal, Rock the steering back and forth with the wheels raised off the ground, Rock the steering back and forth with the wheels on turntables, Rock the steering back and forth with the wheels on the ground or ramp, One advantage of power assisted steering over a manual steering on a light vehicle is that it allows for:, A high steering box ratio increasing the number of turns lock-to-lock, A high steering box ratio reducing the number of turns lock-to-lock, A low steering box ratio reducing the number of turns lock-to-lock, A low steering box ratio increasing the number of turns lock-to-lock, When checking the maximum pressure of a rack & pinion hydraulic PAS system, you must ensure that:, The steered wheels are placed on turn-tables, The passenger side wheel is prevented from turning, All steered axles are lifted off the ground, Both steered wheels are prevented from turning, Which of the following diagnostics tools is best suited to measure the output from a light vehicle ABS speed sensor?, An Ohmeter, An Oscilloscope, A Dynamometer, A DC Voltmeter, If the motor fails on an electronic power assisted steering system, The engine must shut down until the fault is repaired, The steering will lock in the position straight ahead position, The engine management system will reduce engine power, The driver must still be able to steer the vehicle, 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 decelaration 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, A coil spring is subjected to three forces during normal operation, these forces are:, Tensile, compressive and sheet, Compressive tensile and torsional, Compressive, sheer and torsional, Sheer, bending and compressive, An advanced ride control system when applied to a light vehicle:, Monitors the pitch of the vehicle and is over-ridden by the throttle and brakes, Monitors the yaw of the vehicle and over-rides the drivers throttle and brake, Monitors the yaw of the vehicle and is over-ridden by the throttle of brakes, Monitors the pitch of the vehicle and over-rides the throttle and brake input, What type of trace would you expect to see on an oscilloscope when testing the output from a hall effect sensor?, A cosine wave, A sine wave, A variable frequency, A square wave, With regards to light vehicle, the camber angle is..., The angle of the road wheel steering axis relative to the vertical - Side, The angle of the road wheel steering axis relative to the vehicle - Above, The inclination of the road wheel relative to the vertical axis - Front, The inclination of the road wheel relative to the vertical axis - Side, A four wheel steer light vehicle is presented for repair with the O/S/R tyre wearing smooth on the outer. A possible cause is:, Incorrect rear wheel camber angle, Incorrect front wheel toe-in, Incorrect rear wheel toe-in, Incorrect rear wheel castor angle, The diagram shows the layout of a communication network from a light vehicle, the system operates by:, Each control unit working completely independently from the others, Each control unit sending and receiving varying resistances through data-bus, Each control unit sending and receiving varying voltages through data-bus, Each control unit sending and receiving data packets through the data-bus, 1 HZ equals..., 1 metre per second, 1 Cycle per second, 1 Joule per second, 1 v DC per second, When checking resistance in ABS modulator valve it's essential that:, The brake pedal is not pressed, The wiring harness is connected to the pump, The vehicle ignition is switched off, The wiring harness is disconnected from the ABS modulator, What type of waveform does an Inductive sensor produce?, Digital Waveform, Square Waveform, Digital Signal Waveform, Sine Waveform, What happens to the DC 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, 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 outside bend 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, When a traction control system senses wheel slip, it will..., Automatically brake both wheels, Limit the engine RPM and brake slipping wheel, Reduce engine RPM and brake both wheels, Stop ABS from working, What is the maximum slip angle tolerance?, 5-10%, 50-60%, 10-20%, 10-30%, One symptom of self-levelling suspension not working on a laden estate car would be..., The hydraulic PAS would become lighter than normal, The headlights could dazzle oncoming drivers at night time, The vehicle would tend to understeer when cornering, The engine management system would put the car into limp mode, 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 sensor, This diagram represents a wave form from an inductive ABS sensor. As the wheel speed increases, the:, Voltage remains the same and frequency the same, Voltage increases and frequency increases, Voltage increases and frequency remains the same, Voltage remains the same and frequency increases, What type of waveform does this picture show?, Analogue waveform, CANBUS High/ Low signal waveform, Digital waveform, 3 Phase AC motor signal, When discussing the coefficient of friction, it can be said that:, The coefficient of friction is equal whether static or dynamic, Dynamic coefficient of friction is lower than static, 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 Ohmmeter must be connected in parallel, The ammeter must be connected in series, The Ohmmeter must be connected in series, The ammeter must be connected in parallel

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