The following statements are all correct EXCEPT ________.
A) When the PCM detects detonation using the knock sensor, it will retard ignition timing.
B) Knock sensors require voltage input from the PCM to function properly.
C) The knock sensor may be ignored by the PCM at idle.
D) Ignition timing may be either ATDC, at TDC, or BTDC.
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Technician A says that a defective spark plug wire or boot can cause an engine misfire. Technician B says that a tracked ignition coil can cause an engine misfire. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician
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Technician A says that most crankshafts can be reground to be 0.010, 0.020, or 0.030 inch undersize. Technician B says that most engine bearings are constructed with an aluminum shell for strength and are covered with a tin-lead alloy. Who is right?
A) Technician A B) Technician B C) Both technicians D) Neither technician
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Technician A says that full frame vehicles combine the body of the vehicle with the frame structure. Technician B says that unibody vehicles combine the body of the vehicle with the frame structure. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
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Technician A uses three prong electrical cords when possible. Technician B uses double insulated electrical tools. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
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The high voltage battery disconnect should be pulled out before refueling an HEV.
A) True
B) False
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Technician A says most transmission hydraulic valves are spool valves. Technician B says the recessed areas of a spool valve are called grooves. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
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Driveshaft vibrations may be corrected by using ________ to balance the shaft.
A) Hose clamps B) Clip-on wheel balancing weights
C) Balancing fluid D) Stick-on wheel balancing weights
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Technician A hammers on a tie rod stud to break the taper with the steering knuckle. Technician B uses a special puller to separate the tie rod stud from the steering knuckle. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
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Rear-disc auxiliary drum parking brakes ________.
A) May be adjusted through an opening in the drum B) Use a dual-servo friction assembly
C) Both A and B D) Neither A nor B
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