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ASE A4 Suspension and Steering practice questions

210 free questions with answers and explanations.

Practice test
  1. 1.A technician is performing a tire rotation on a front-wheel drive vehicle. The manufacturer's recommended rotation pattern is 'front-to-back, cross-to-front.' Which of the following describes the correct tire movement for this pattern?Wheels and Tires Diagnosis and Repair
  2. 2.A technician is inspecting a wheel for damage. They observe small cracks originating from the lug nut holes on an aluminum alloy wheel. This type of damage is commonly referred to as:Wheels and Tires Diagnosis and Repair
  3. 3.A customer reports a vibration that is felt primarily in the seat and floorboard at highway speeds (above 55 mph). Which of the following is the MOST likely cause?Wheels and Tires Diagnosis and Repair
  4. 4.A technician is preparing to perform a tire rotation on an all-wheel drive (AWD) vehicle that has directional tires. Which rotation pattern should the technician use?Wheels and Tires Diagnosis and Repair
  5. 5.A technician is performing a tire rotation on a rear-wheel drive (RWD) vehicle with non-directional tires and full-size matching wheels. Which tire rotation pattern is generally recommended to maximize tire life and ensure even wear?Wheels and Tires Diagnosis and Repair
  6. 6.A technician is performing a wheel bearing diagnosis. The customer reports a grinding noise that changes with vehicle speed and becomes louder when turning the steering wheel to the left. Which wheel bearing is MOST likely faulty?Wheels and Tires Diagnosis and Repair
  7. 7.A technician is performing a pre-balance inspection on a tire and wheel assembly. Before mounting the assembly on the balancer, they notice excessive runout on the wheel rim. Which of the following is the MOST appropriate next step?Wheels and Tires Diagnosis and Repair
  8. 8.A technician is diagnosing a tire pressure monitoring system (TPMS) issue. The TPMS warning light is on, and a scan tool shows Diagnostic Trouble Code (DTC) C0040, indicating a 'Left Front Tire Pressure Sensor Malfunction.' After replacing the left front sensor, the technician attempts to perform a relearn procedure. The relearn process fails repeatedly. Which of the following is the MOST likely reason for the relearn failure?Wheels and Tires Diagnosis and Repair
  9. 9.A technician is performing a wheel inspection and notices corrosion buildup on the hub mounting surface. What is the MOST important reason to clean this corrosion before mounting a wheel?Wheels and Tires Diagnosis and Repair
  10. 10.A technician is diagnosing a vehicle with a severe vibration that occurs only during braking. The vibration is felt strongly through the brake pedal and steering wheel. After inspecting the brake system, the technician determines the brake rotors are warped. What is the MOST likely underlying cause of the warped brake rotors?Wheels and Tires Diagnosis and Repair
  11. 11.A technician is replacing a wheel bearing assembly on a front-wheel drive vehicle. After installation, the technician notices that the ABS light is illuminated. The wheel bearing assembly included a new wheel speed sensor. What is the MOST likely reason for the ABS light to be on?Wheels and Tires Diagnosis and Repair
  12. 12.A customer reports that their vehicle pulls consistently to the right. Upon inspection, the technician notes that the left front tire shows excessive wear on its outer edge, while the right front tire shows excessive wear on its inner edge. The steering wheel is offset to the left when driving straight. Which of the following is the MOST likely cause?Wheels and Tires Diagnosis and Repair
  13. 13.A technician is diagnosing a TPMS light that illuminates intermittently. They connect a scan tool and retrieve a DTC indicating 'Low Tire Pressure, Right Rear'. After checking the tire pressure and confirming it is correct, the technician performs a TPMS sensor activation and relearn procedure. The relearn procedure fails repeatedly for only the right rear sensor. What is the MOST likely cause of the repeated relearn failure?Wheels and Tires Diagnosis and Repair
  14. 14.A customer reports a 'clunking' noise coming from the front end of their vehicle when going over bumps or turning sharply at low speeds. The technician inspects the front suspension and finds no obvious issues with ball joints, tie rods, or control arm bushings. Upon jacking up the vehicle, the technician notices excessive play when grabbing the tire at 12 and 6 o'clock and rocking it. Which of the following is the MOST likely cause?Wheels and Tires Diagnosis and Repair
  15. 15.A customer reports that after hitting a large pothole, their vehicle now pulls sharply to the right. Upon inspection, the technician notices that the left front wheel has excessive positive camber. Which of the following is the MOST likely cause?Wheels and Tires Diagnosis and Repair
  16. 16.A technician is performing a pre-trip inspection on a commercial fleet vehicle. They notice that the tires on the drive axle are worn more heavily on one side of the tread than the other. What is the MOST likely cause?Wheels and Tires Diagnosis and Repair
  17. 17.A technician is performing a pre-balance inspection on a tire and wheel assembly. They notice that the tire has a 'dot' (either red or yellow) on the sidewall, which is aligned with the valve stem. What is the significance of this alignment?Wheels and Tires Diagnosis and Repair
  18. 18.A technician is inspecting a vehicle with a severe vibration complaint. During the inspection, they notice that one of the wheel weights has fallen off. After re-balancing the wheel, the vibration is significantly reduced but not entirely eliminated. The vehicle still exhibits a slight vibration at highway speeds. What should the technician consider next to fully resolve the vibration?Wheels and Tires Diagnosis and Repair
  19. 19.After performing a tire repair using a patch-plug combination, a technician should always:Wheels and Tires Diagnosis and Repair
  20. 20.A technician is performing a pre-purchase inspection on a vehicle. They observe that the inner edges of both front tires show significantly more wear than the outer edges. The vehicle does not pull to one side, and the steering wheel is centered. Which of the following is the MOST likely cause of this tire wear pattern?Wheels and Tires Diagnosis and Repair
  21. 21.A customer reports a slow leak from one of their tires. Upon inspection, the technician finds a nail embedded in the tread area, approximately 1 inch from the sidewall. The nail has pierced through the tire. What is the MOST appropriate repair action?Wheels and Tires Diagnosis and Repair
  22. 22.A technician is performing a tire pressure monitoring system (TPMS) relearn procedure after replacing a tire. The scan tool successfully communicates with all four sensors, but the vehicle's TPMS light remains illuminated. The technician verifies all tire pressures are set to the manufacturer's specification. Which of the following is the MOST likely reason for the TPMS light to remain on?Wheels and Tires Diagnosis and Repair
  23. 23.A customer complains of a vibration that is most noticeable at speeds between 45-60 mph. The vibration is felt primarily through the steering wheel. What is the MOST likely cause?Wheels and Tires Diagnosis and Repair
  24. 24.A technician is inspecting a vehicle that exhibits a high-frequency vibration and a 'shimmy' in the steering wheel at speeds between 40-70 mph. The technician also notes some irregular tire wear on the front tires. Which of the following is the MOST appropriate next diagnostic step?Wheels and Tires Diagnosis and Repair
  25. 25.A technician is diagnosing a vehicle with a clunking noise and excessive play when wiggling the tire at the 12 and 6 o'clock positions. The play is reduced or eliminated when the brakes are applied. Which of the following is the MOST likely cause?Wheels and Tires Diagnosis and Repair
  26. 26.A technician is inspecting a vehicle with a slow tire leak. They locate a small nail embedded in the tread area, approximately 1.5 inches from the sidewall. The tire's speed rating is H, and its load index is 91. According to RMA (Rubber Manufacturers Association) guidelines, can this tire be safely repaired?Wheels and Tires Diagnosis and Repair
  27. 27.A customer complains of excessive road noise and poor handling. Upon inspection, a technician observes that the inner and outer edges of the front tires are significantly more worn than the center tread. Which of the following is the MOST likely cause of this tire wear pattern?Wheels and Tires Diagnosis and Repair
  28. 28.A technician is performing a wheel inspection and notices that the wheel nuts are consistently loose on one wheel. The wheel stud threads appear to be in good condition, and the correct lug nuts are being used. Which of the following is the MOST likely cause for the recurring looseness?Wheels and Tires Diagnosis and Repair
  29. 29.A technician is inspecting a vehicle for a vibration complaint. During the inspection, they notice that the lug nuts on one wheel are loose. After tightening the lug nuts to the manufacturer's specified torque of 100 ft-lbs, the technician should also:Wheels and Tires Diagnosis and Repair
  30. 30.A client complains of a vibration that is felt primarily through the steering wheel at speeds between 50-70 mph. The technician performs a road force balance, and the results show a high road force variation (RFV) of 30 lbs (13.6 kg) on the left front wheel. The maximum allowable RFV for this vehicle is 15 lbs (6.8 kg). What is the MOST appropriate next action?Wheels and Tires Diagnosis and Repair
  31. 31.A customer complains of a rhythmic thumping noise that increases with vehicle speed. Upon inspection, you notice a distinct cupping or scalloping wear pattern on the outer edges of the front tires. Which of the following is the MOST likely cause of this tire wear?Wheels and Tires Diagnosis and Repair
  32. 32.A technician is diagnosing a vehicle with a persistent grinding noise that gets louder when turning right and quieter when turning left. The noise is constant, regardless of braking. Which component is MOST likely faulty?Wheels and Tires Diagnosis and Repair
  33. 33.A technician is performing a diagnostic test on a hydraulic power steering system that is exhibiting hard steering. With the engine running and the steering wheel turned to full lock, a pressure gauge connected to the high-pressure line reads significantly lower than the manufacturer's specified maximum pressure, and the power steering pump is making excessive noise. What does this indicate?Steering System Diagnosis and Repair
  34. 34.A vehicle with hydraulic power assist experiences a persistent, high-pitched whining noise that increases in volume with engine RPM and when the steering wheel is turned. The power steering fluid level is correct, but upon inspection, tiny air bubbles are visible in the fluid reservoir. What is the MOST likely cause of this condition?Steering System Diagnosis and Repair
  35. 35.A vehicle with an electronically controlled variable-assist power steering system exhibits inconsistent steering effort; sometimes it feels normal, and other times it requires significant effort, even at highway speeds. There are no fluid leaks or unusual noises from the pump. A scan tool shows intermittent communication errors with the power steering control module. What is the MOST likely cause?Steering System Diagnosis and Repair
  36. 36.A customer complains that their vehicle's steering feels 'heavy' or requires significantly more effort to turn, especially at low speeds. The power steering fluid level is correct, and there are no abnormal noises coming from the power steering pump. A scan tool check reveals no DTCs. Which of the following is the MOST likely cause?Steering System Diagnosis and Repair
  37. 37.A customer complains of a noticeable 'dead spot' in the steering, where the steering wheel can be turned a small amount without any immediate response from the road wheels. This condition is present even when the vehicle is stationary. Upon inspection, the technician finds no play in the tie rod ends or ball joints. What is the MOST likely cause?Steering System Diagnosis and Repair
  38. 38.During a pre-alignment inspection, a technician observes that the inner tie rod boot on the driver's side steering rack is torn and leaking grease. The customer reports no immediate steering issues. What is the MOST significant long-term concern associated with this condition?Steering System Diagnosis and Repair
  39. 39.A technician is diagnosing a power steering system leak. After cleaning the system thoroughly, a black, oily stain reappears around the connection point between a high-pressure hose and the power steering pump. The hose appears to be correctly tightened. Which of the following is the MOST likely cause of the leak?Steering System Diagnosis and Repair
  40. 40.A customer reports that their vehicle's steering wheel is off-center when driving straight, but the vehicle does not pull significantly to one side. A recent front-end alignment was performed, and the technician confirmed that the toe, camber, and caster are within specifications. What is the MOST likely cause of the off-center steering wheel?Steering System Diagnosis and Repair
  41. 41.A vehicle equipped with an electric power steering (EPS) system develops a sudden loss of power assist. The dashboard displays a 'Power Steering Malfunction' warning light. Using a scan tool, a technician retrieves Diagnostic Trouble Code (DTC) C0550. What is the MOST likely issue indicated by this DTC and symptom combination?Steering System Diagnosis and Repair
  42. 42.A vehicle exhibits excessive free play in the steering wheel, requiring constant small corrections to maintain a straight path. When the technician checks the steering gear, a significant amount of rotational movement is observed at the input shaft before the output shaft begins to move. Which of the following is the MOST likely cause?Steering System Diagnosis and Repair
  43. 43.A vehicle exhibits a vibration that is felt primarily through the steering wheel and becomes more pronounced at highway speeds. The vibration is consistent and does not change significantly when turning or braking. The technician has confirmed that all tires are properly balanced and wheel bearings have no play. What is the MOST likely cause of this steering wheel vibration?Steering System Diagnosis and Repair
  44. 44.A customer complains of a groaning noise and increased steering effort, especially when turning the steering wheel all the way to the left or right. Upon inspection, the power steering fluid level is found to be low, and the fluid appears dark and foamy. Which of the following is the MOST likely cause of these symptoms?Steering System Diagnosis and Repair
  45. 45.A vehicle exhibits a loud 'clunk' or 'thump' noise from the front end, particularly when turning the steering wheel sharply or driving over bumps. The technician inspects the steering linkage and finds no excessive play in the tie rod ends, pitman arm, or idler arm. However, when the steering wheel is turned, a noticeable movement is observed between the steering column shaft and the steering gear input shaft. What is the MOST likely cause of this noise?Steering System Diagnosis and Repair
  46. 46.A client complains of a vehicle pulling to the right. During a four-wheel alignment, the technician observes that the rear thrust angle is +0.8 degrees. The specification for thrust angle is 0.0 degrees +/- 0.2 degrees. The front alignment angles are all within specification. What is the most likely effect of this thrust angle on the vehicle's handling?Wheel Alignment Diagnosis, Adjustment, and Repair
  47. 47.A technician is performing a four-wheel alignment. After completing all pre-alignment checks and runout compensation, the alignment machine displays the current angles. The technician notices that the front total toe is -0.50 degrees, and the specification is +0.05 degrees +/- 0.05 degrees. Which of the following is the correct interpretation and adjustment?Wheel Alignment Diagnosis, Adjustment, and Repair
  48. 48.A technician is performing an alignment on a vehicle. The alignment machine displays a Steering Axis Inclination (SAI) of 12.0 degrees on the left front and 10.0 degrees on the right front. The specification for SAI is 11.0 +/- 0.5 degrees. What is the MOST likely cause of this discrepancy?Wheel Alignment Diagnosis, Adjustment, and Repair
  49. 49.An alignment machine is being operated by a technician. During the runout compensation procedure, the machine prompts the technician to 'Rotate wheel 90 degrees and press enter' multiple times, but the measurements consistently fail to register or produce inconsistent readings. What is the MOST likely cause of this issue?Wheel Alignment Diagnosis, Adjustment, and Repair
  50. 50.A vehicle with a hydraulic power steering system requires significantly more steering effort when the engine is at idle compared to higher RPMs. The steering effort normalizes as engine speed increases. A power steering pressure test shows slightly low pressure at idle, but normal pressure above 1500 RPM. What is the MOST likely cause?Steering System Diagnosis and Repair