Most on-board diagnostic systems
will recognize and store a hard
code for all of the following EX-
CEPT:
a. An absent signal
b. An intermittent signal
c. An improbable signal
d. An out-of-range signal - ANSWERb
AnswerTechnician A says that absolute
pressure uses a reference point of
ze...
most on board diagnostic systems will recognize an
answertechnician a says that absolute pressure us
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AVI A8 full set Questions & Answers
Most on-board diagnostic systems
will recognize and store a hard
code for all of the following EX-
CEPT:
a. An absent signal
b. An intermittent signal
c. An improbable signal
d. An out-of-range signal - ANSWERb
AnswerTechnician A says that absolute
pressure uses a reference point of
zero pressure, or total vacuum, re-
gardless of atmospheric pressure or
altitude.
Technician B says that to correct in-
take manifold vacuum readings for
altitude, add one in-Hg (3.377 kPa)
for every 1000 feet (305 meters)
above sea level.
Who is right?
a. A only
b. B only
c. Both A and B
d. Neither A nor B - ANSWERa
AnswerThe most accurate method of de-
tecting severely worn piston rings
would be to perform a:
a. Manifold vacuum test
b. Cylinder power balance test
c. Compression test
d. Cylinder leakage test - ANSWERd
AnswerWhich oscilloscope pattern allows
you to display the voltage traces for
all cylinders one after the other from
left to right across the screen in fir-
ing order?
a. Raster
b. Parade
c. Stacked
d. Superimposed - ANSWERb
, AnswerTechnician A says that a high, short
firing line on a secondary oscillo-
scope trace is the result of low re-
sistance from a short circuit.
Technician B says that a damaged
plug wire, worn distributor cap, or
excessive plug gap results in a
high, short firing line on a second-
ary oscilloscope trace.
Who is right?
a. A only
b. B only
c. Both A and B
d. Neither A nor B - ANSWERb
AnswerHigh levels of hydrocarbon (HC)
emissions are often the result of a
malfunction in the:
a. Ignition system
b. Fuel system
c. PCV system
d. Emission control system - ANSWERa
AnswerWhen the positive voltmeter lead of
a voltmeter is connected to the pos-
itive (battery) coil terminal and the
negative voltmeter lead is connect-
ed to ground, the voltmeter dis-
plays:
a.
Coil primary voltage drop
b. Coil primary resistance
c. Coil primary available voltage
d. Coil potential voltage - ANSWERc
AnswerTechnician A says that an exces-
sively high secondary voltage dis-
charge can be caused by high pri-
mary circuit resistance.
Technician B says a loss of second-
ary voltage will cause a greater loss
of primary voltage.
Who is right?
a. A only
b. B only
, c. Both A and B
d. Neither A nor - ANSWERd
AnswerTechnician A says that the battery
ter lead to the battery primary
terminal and the other ohmmeter
lead to the distributor terminal of the
coil.
Technician B says to check for a
shorted coil winding, connect one
ohmmeter lead to either coil primary
terminal and touch the other ohm-
meter lead to the metal case of the
coil.
Who is right?
a. A only
b. B only
c. Both A and B
d. Neither A nor B - ANSWERc
AnswerTo check total, centrifugal, and vac-
uum advance on a conventional
distributor, all of the following instru-
ments are used EXCEPT:
a. Tachometer
b. Vacuum pump
c. Dwell meter
d. Timing light - ANSWERc
AnswerA magnetic timing meter pickup op-
erates on the same principle as
a(n):
a. Magnetic pickup in a distributor
b. Hall-effect sensor
c. Stroboscopic timing light
d. LED pickup coil - ANSWERa
AnswerWhich of the following materials
should NOT be used for fuel lines?
a. Rigid steel tubing
b. Flexible nylon tubing
c.
Double-wall copper tubing
d.
Neoprene hose - ANSWERc
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