Automotive Diagnostics Quiz

When using an oscilloscope, an inductive type wheel speed sensor will produce a

• Sine wave

• Square wave

• Constant voltage

• Mirrored pattern

Electronic brake force distribution (EBD) has replaced which component on a modern braking system?

• Brake servo

• ABS sensors

• Brake proportioning valve

• Manual handbrake

A bounce test can be used to assess the condition of a vehicle’s

• Leaf springs

• Tyre pressures

• Dampers

• Coil springs

Excessive negative camber on a vehicle’s front wheel would be indicated by excessive tyre wear on the

• Outer edge

• Centre

• Both inner and outer edges

• Inner edge

What must the technician do after replacing the steering rack on an electrically-operated steering system?

• Replace all air bags

• Recalibrate the steering angle sensor

• Check the brake fluid level

• Adjust the tyre pressure

A modern vehicle’s electronic stability program (ESP) would incorporate which one of the following components?

• Yaw-rate sensor.

• Optical sensor.

• Knock sensor.

• Potentiometer.

Which one of the following tools is used to inspect the front brake discs for excessive run-out?

• External micrometer.

• Internal micrometer.

• Vernier callipers.

• Dial test indicator.

What do bald patches in one spot in the centre of the tyre tread indicate?

• In correct tracking.

• Incorrect wheel balance.

• Worn track rod ends.

• Incorrect camber.

What does incorrect castor angle on one side of the vehicle cause?

• Brake imbalance.

• Trim height.

• Pulling to one side when driving in a straight line.

• The vehicle’s suspension to oscillate.

What is one cause of brake fade?

• Incorrect brake pads fitted.

• Inoperative brake servo.

• Excessive brake drum ovality.

• Excessive disc run out.