ASE B-5 Mechanical/Electrical Practice
Questions and Answers (100% Pass)
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 - ✔️✔️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
D. start the wheel farthest from the master cylinder - ✔️✔️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 - ✔️✔️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
C. ignore such a small amount of new oil
D. change all the oil in the system - ✔️✔️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?
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
D. a damaged strut rod - ✔️✔️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 - ✔️✔️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?
3
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