LV08 Chassis level 3

On an inductive wheel speed sensor one way to increase the output voltage would be to

• Increase the sensor input voltage
• Decrease the sensor air gap
• increase the sensor air gap
• decrease the sensor input voltage

How can an ABS sensor be tested whilst still in position on the car

• Connect voltmeter to sensor wires and look for a 5 volts
• Connect ammeter to sensor wires and look for 20 amps
• An ABS sensor can not be tested in situ
• By connecting an oscilloscope to the output wires

The electronic brake force distribution system on a light vehicle controls the brake

• 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

During traction control operation the

• brake is released on gripping wheel until traction found
• brake is applied to gripping wheel until traction found
• brake is applied to the slipping wheel until traction found
• brake is released on slipping wheel until; traction found

A fault on an electronic brake force distribution system will cause

• the engine to produce reduced power
• the EDC system to shut down
• the electronic gearbox to select neutral
• the ABS to stop working

During braking an insecure load on a vehicle roof will slide forward due to

• inertia force
• gravitational force
• normal force
• centrifugal force

If a motor fails on an electronic power steering system

• the engine will go to reduced power
• the driver must still be able to steer the car
• the steering locks up in the straight ahead position
• the engine will stop working until the fault is repaired

An ABS system calculates a wheel is about to lock by

• sensing the deceleration force of the vehicle
• sensing the sudden drop of DC voltage at the wheel sensor
• sensing the sudden drop of AC voltage at the wheel sensor
• Sensing the sudden drop of speed from the vehicle taco graph

when checking an exciter ring it read this reading left from 0, if run out of 0.18mm is allowed

• the ring is in spec by 0.07mm
• the ring is out of spec by 0.78mm
• the ring is in spec by 0.70mm
• the ring is out of spec by 0.07mm

One advantage of electronic Power Assisted Steering over hydraulic PAS is

• reduced steering rack ratio
• no torque steering required
• more fuel efficient
• Less steering effort required