ASE A4 Steering and Suspension Practice Test
61. A vehicle has a steady pull to the left. All of these will cause this condition EXCEPT:
- A. The caster angle.
- B. Low tire pressure.
- C. The camber angle.
- D. Steering U-joint coupling.
Answer A is wrong. An incorrect caster angle will cause a vehicle to pull.
Answer B is wrong. Low tire pressure will cause a vehicle pull.
Answer C is wrong. An incorrect camber angle will cause a vehicle to pull.
Answer D is correct. A loose steering universal joint will cause play in the steering wheel.
62. Technician A says a vehicle will pull to the side with the most positive camber. Technician B says that too much negative camber will result in excessive wear on the inside tread of the tire. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
Answer A is wrong. Both technicians are correct. A vehicle will pull to the side with the most positive camber.
Answer B is wrong. Negative camber results in tire wear on the inside tread of the tire. Positive camber results in tire wear on the outside tread of the tire.
Answer C is correct. Excessive camber will cause both tire wear and pull.
Answer D is wrong. Both technicians are correct.
63. The customer states that the steering on the vehicle in the diagram above has felt loose and sloppy after getting a four-wheel alignment. The electronic power steering and traction control warning lights were on during the test drive, and the vehicle's steering had excessive play. Which of the following is MOST likely the cause?
- A. Resistance at point A.
- B. The steering angle sensor.
- C. A faulty vehicle speed sensor.
- D. A short to ground at point D.
Answer A is wrong. When the voltage to the control module drops below a certain threshold, the module may not operate. Resistance in the power circuit results in problems with the control module and a code for low source voltage.
Answer B is correct. Check and ensure that the SAS steering angle and torque sensor are reset or recalibrated after replacing a steering component or performing a wheel alignment on a modern vehicle with advanced driver assistance systems ADAS and electric power steering.
Answer C is wrong. The control modules share signals from sensors like the vehicle speed and wheel speed sensors over the Controller Area Network.
Answer D is wrong. A redundant short to ground in the ground circuit would not likely cause warning lights and loose steering.
64. A vehicle with a rack and pinion steering system wanders and makes a popping sound while turning. Which of the following is MOST likely causing these symptoms?
- A. Weak coil springs.
- B. Loose tie rods.
- C. Worn idler arm.
- D. Aerated power steering fluid.
Answer A is wrong. Weak coil springs increase ride harshness and the chance of the spring bottoming out. When worn, it is always best to replace coil springs in pairs.
Answer B is correct. Loose tie rods cause steering wander and make a clunking or popping sound while turning.
Answer C is wrong. Parallelogram steering systems have an idler arm opposite of the pitman arm. It fixes the center link, preventing it from moving and flexing as the vehicle travels over bumps and turns in the road.
Answer D is wrong. Air in the power steering system affects performance and causes the system to make a whining or moaning sound.
65. A technician is bleeding air from a hydraulic power steering system. All of the following are true about bleeding hydraulic power steering systems EXCEPT:
- A. Raise the front tires off the ground.
- B. Turn the steering wheel left and right from stop to stop to remove air from the system.
- C. Flush with clean power steering fluid.
- D. Hold the wheel against each steering stop for at least ten seconds.
Answer A is wrong. The tires are raised in the air to prevent flat spots.
Answer B is wrong. Turn the wheel left and right from stop to stop to bleed air from the system.
Answer C is wrong. Use the recommended fresh power steering fluid.
Answer D is correct. Do not hold the wheel against the steering stops for more than five seconds. Doing so quickly increases system pressure and can damage power steering components.