ASE A4 Steering and Suspension Practice Test

41. On cold mornings, the warning lamp on a vehicle with a TPMS tire pressure monitoring system stays illuminated for several minutes before it goes out. Which of these is MOST likely the cause of this condition.

  • A. Clogged TPMS sensor.
  • B. Worn tread on one of the tires.
  • C. TPMS initialization.
  • D. Low tire pressure.

41.

Answer A is wrong. The TPMS sensor has a port to sense the tires air pressure. If the port becomes clogged, the sensor will indicate low air pressure to the module and the TPMS light will be illuminated and stay illuminated until repaired. Tires heat up as the vehicle is driven, raising the tires air pressure to acceptable levels. These levels are located on a sticker on the drivers side door or door jam.

Answer B is wrong. The TPMS sensor senses air pressure not the tread depth of the tire.

Answer C is wrong. Initialization is a process of synchronizing a sensor to the controller. It senses and registers important information like the sensors ID.

Answer D is correct. When the light stays on for several minutes of driving and then goes out, one of the tires could have low air pressure. As the tire heats from driving, the air pressure increases and the light goes out. Check all four tires and the spare for proper air pressure.

42. Technician A says that loose power steering rack bushings result in vehicle wander. Technician B says worn rack bushings cause changes in toe. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

42.

Answer A is wrong. Loose or worn rack bushings will result in vehicle steering wander.

Answer B is wrong. Loose or worn rack bushings will result in excessive rack movement. This movement can change the tie rod adjustment after hitting a bump. This is also known as bump steer.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

43. There is noticeable wear on the left front tire of a rear wheel drive vehicle. The technician suspects the camber angle is out of specification. All these characteristics of camber are true EXCEPT:

  • A. Negative camber causes wear on the tires inside tread.
  • B. An out of specification camber angle will result in a steering pull condition.
  • C. The vehicle will pull to the side with the most positive camber.
  • D. Camber is not included in the included angle.

43.

Answer A is wrong. This is an except question. If the camber is negative, the tire will wear on the inside tread.

Answer B is wrong. Out of specification camber will result in a pull condition. Visually inspect the vehicle for a bent control arm, spindle or strut.

Answer C is wrong. The vehicle will pull to the side with the most positive camber.

Answer D is correct. The camber angle is included with the SAI to equal the included angle.

44. A vehicle pulls to the right and makes a clunking sound when the brakes are applied. During an alignment check the technician notices excessive negative caster on the right front wheel. Technician A says this is most likely caused by a seized brake caliper. Technician B says this is most likely caused by worn or missing strut rod bushings. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

44.

Answer A is wrong. A seized right front brake caliper will cause the vehicle to pull to the left when braking. This would not result in excessive negative caster.

Answer B is correct. Worn strut rod bushings will result in a clunking noise when the brake is applied, because the lower control arm shifts back from a lack of bushing support. Back and forth movement of the strut rod affects a vehicle's caster angle. Some vehicles use the strut rod to adjust caster.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.

45. Two technicians are discussing an air bag solenoid located on the top of the air bag. Technician A says this valve is used to inflate the air bag. Technician B says this valve is used to deflate the air bag. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

45.

Answer A is wrong. The solenoid receives a signal from the ECM to inflate the air bag to raise the vehicle. A faulty air bag solenoid can prevent the vehicle's suspension from raising.

Answer B is wrong. The solenoid receives a signal from the ECM to deflate the air bag to lower the vehicle. A faulty air bag solenoid can prevent the vehicle's suspension from lowering as well.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

ASE A4 Steering and Suspension Quiz
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