ASE B-5 Mechanical/Electrical Exam Questions and Answers

ASE B-5 Mechanical/Electrical Exam Questions and Answers A vehicle is brought in with a bent subframe. Technician A says to section the subframe. Technician B says the subframe should not be repaired and must be replaced. Who is right? A, B, Both, or Neither - Answer-Technician B only The subframe should never be sectioned, and should rarely, if ever, be worked. It is typically a bolt-on part that does not lend itself to traditional straightening methods. Vehicle manufacturers recommend replacement. The first step in bleeding brakes is to: A. check the parking brake adjustment B. check the master cylinder fluid level C. start the engine and pump the brakes EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 2/30 D. start the wheel farthest from the master cylinder - Answer-B. check the master cylinder fluid level The fluid level will have to be monitored as it is removed during the process, so always start with a full reservoir. Bleeding the farthest wheel first is good practice, but not the first thing to do. Technician A says that negative camber is the tilt of the tire toward the front of the vehicle. Technician B says that negative camber means that the top of the tire is tipped in toward the centerline of the vehicle. Who is right? A, B, Both, or Neither - Answer-Technician B only Camber is the inward or outward tip of the tire, as seen from the front of the vehicle. When a wheel sustains an impact from the side, the camber is frequently affected. During A/C refrigerant recovery, 1 oz of oil has been recovered from the system. Which of these is the correct procedure? A. return the oil to the system B. replace the oil with new oil EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 3/30 C. ignore such a small amount of new oil D. change all the oil in the system - Answer-B. replace the oil with new oil New oil should be used to restore the proper amount. Also replace additional amounts for any components replaced. A vehicle has positive caster on the right front wheel and zero caster on the front left wheel. Technician A says this will cause the vehicle to pull left. Technician B says the vehicle will pull to the right. Who is right? A, B, Both, or Neither - Answer-A. Technician A only The vehicle will always pull to the side with the least amount of positive caster, or the greatest amount of negative caster. Caster on one side of a unibody vehicle is out of specification. The LEAST likely cause is: A. a misaligned crossmember B. a bent idler arm C. a damaged lower control arm EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 4/30 D. a damaged strut rod - Answer-B. a bent idler arm A bent idler arm is the least likely problem. All the other choices could cause a caster problem. After repairing a vehicle, it is found that camber is out of spec on one side of the vehicle. Technician A says that there might be suspension mounting locations out of spec. Technician B says that before adjusting camber, SAI and included angle should be checked and compared side-to-side. Who is right? A, B, Both, or Neither - Answer-Both Technician A and B. A number of conditions can cause a camber reading to be off, such as damaged parts or a distorted suspension mounting location. A visual examination of the parts is all that's needed in cases of severe damage. However, the only way to be sure is to check both SAI and included angle readings to determine where the damage is. A driver's side airbag was cut during a collision but did not deploy. What is the proper action? A. use plastic repair adhesive to repair the cut and refinish the bag B. return the bag to the manufacturer for recycling C. replace the bag with an OEM part, deploy the old bag before disposal EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 5/30 D. replace with a salvage part - Answer-C. replace the bag with an OEM part, deploy the old bag before disposal Only OEM parts should be used. Any damage to an airbag module requires replacement. A repaired vehicle is found to have an SAI difference where one side is within specs and the other side is out. Technician A says to bend the strut on the out of spec side to get it to align. Technician B says that cradle might have shifted. Who is right? A, B, Both, or neither - Answer-Neither A nor B While the equipment to straighten bent struts has been on the market for decades, it is common knowledge that struts should never be bent, EVER! If the cradle had shifted, SAI on both sides would have changed an equal amount. If SAI is off, the place to begin looking is the upper and lower mounting points for the strut. One of them will be found to be out of position. The fuel filter may be located in all of the following locations EXCEPT: A. in the tank B. just outside the tank C. on the fuel rail EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 6/30 D. inside the engine compartment - Answer-C. on the fuel rail Fuel filters can be located anywhere in line, but they are not placed near heat sources. Technician A says the incorrect rear wheel camber and toe settings may cause bump steer. Technician B says they may cause a tracking problem . Who is right? A, B, Both or Neither - Answer-Both A and B. The vehicle must react to the way the rear wheels are going, and rear wheel camber and toe can affect tracking. If these angles are off, changing the thrust angle, the front wheels will have to be turned in one direction or the other to keep the car going down the road straight, causing a tracking problem. Air intake systems perform all of the following functions EXCEPT: A. filter air for the interior of the vehicle B. control noise from the intake system C. filter air to the engine EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 7/30 D. smooth the air flow into the intake system - Answer-B. control noise from the intake system Air is filtered for the interior on some vehicles, but this is not a function of the air intake system. Technician A says that a bump steer condition is caused by an out-of-level center link or rack- and-pinion. Technician B says that bump steer is most noticeable when the front wheels hit a bump. Who is right? A, B, Both or Neither - Answer-Both Bump steer is caused by a sudden change in front wheel toe settings as the vehicle goes through jounce and then rebound. The toe change is due to an out-of-level rack-and-pinion or center link, which can be caused by damage to the center link, or steering arm or rack-and-pinion mounting location misalignment. The right disc brake caliper and pads must be replaced during collision repairs. What other actions must take place? A. polish the rotor before installation B. replace he brake pads on the left side to maintain equal braking force EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 8/30 C. measure the brake pads on the left side to see if they are serviceable D. replace the same components on the left side - Answer-B Equal braking force must be maintained side-to-side. This requires keeping the same type pads on each side. One headlight on a vehicle won't light. Technician A says to begin by checking for voltage to the headlight switch. Technician B says to begin checking on the headlight side of the circuit. Who is right? A, B, Both, or Neither - Answer-Since only one light is not working, the other headlights are. it is logical to assume that the problem rests in or at the nonworking headlight. Or, in some cases, the headlights are individually fused. Which is the proper brake fluid to use on most vehicle