ASE A6 Test Preparation (Electrical & Electronic
Systems): Questions & Answers
An air bag system is being serviced, Technician A says to disconnect the yellow SRS connectors at the
front of the vehicle. Technician B says to disconnect and isolate the negative battery cable.
Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is B. Always disconnect the negative battery cable and
wrap with tape so contact cannot be made. Follow the specific vehicle's disarming instructions, as some
SRS system can retain backup power for an additional period of time.
Which of these should be used when soldering electrical wiring connections?
A. Rosin core flux
B. Acid core flux
C. Sulfur core flux
D. None of the above - ANSWER:The correct answer is A. For best results and less corrosion at the solder
point, a rosin core flux should be used.
When testing computer-controlled systems, a digital multimeter should be used with an input
impedance of at least:
A. 10k ohms
B. 100k ohms
C. 1 megohm
D. 10 megohms - ANSWER:The correct answer is D. For maximum protection to the computer-controlled
system, or any electronic circuit, it is best to use at least a 10-megohm impedance digital multimeter.
When troubleshooting a slow drain on the battery, which of these diagnostic tools should be used?
A. Ohmmeter
B. Ammeter
C. Voltmeter
,D. Test light - ANSWER:The correct answer is B. Always us an ammeter or a low amperage amp clamp
with your DMM to troubleshoot a slow drain in an electrical circuit.
The condition of a lead-acid battery is being checked. Technician A says to use a galvanometer.
Technician B says to use a capacitive battery tester. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is B. A galvanometer is an analog type voltmeter. OEMs
almost universally recommend the use of a non-intrusive conductive-capacitive type battery tester.
While testing a starting circuit on a 5.7L V8 engine, the technician finds that the engine cranks slowly.
The starter current draw is 90 amps, and the battery voltage while cranking is 11 volts. What should the
technician do next?
A. Check voltage drop of the starter motor circuit
B. Test the battery capacity
C. Replace starter motor, as a short is indicated
D. Determine condition of the engine - ANSWER:If an engine cranks slowly and the starter current draw
is only 90 amps and the voltage is as high as 11 volts, the technician should next check for excessive
voltage drop in the start motor circuit.
Technician A says that a noisy alternator could be caused by a bad diode. Technician B says that a noisy
alternator could be caused by a worn bearing. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is C, both technicians are right. Worn alternator bearings
and/or a bad alternator diode will cause the alternator to be noisy.
A vehicle's turn signals flash too slowly. Technician A claims that the condition could be caused by a
faulty flasher. Technician B says that a bulb may be the wrong type. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is C, both technicians are right. Both an improperly rated
flasher and an incorrect wattage bulb can cause the turn signals to flash at incorrect intervals.
, Technician A says a short circuit to ground in a circuit will decrease resistance. Technician B says a short
circuit will increase current flow. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is C, both technicians are right. A short to ground has
little or no resistance. Current flow increases as resistance decreases.
When using a voltmeter to check for voltage in a circuit, the voltmeter should first be connected to check
for:
A. source voltage.
B. excessive resistance
C. excessive amperage.
D. a good ground. - ANSWER:The correct answer is A. A voltmeter should first be used to see if the circuit
is getting power before during further tests.
When checking the green eye of a sealed maintenance-free battery, no color seen indicates that the
battery is:
A. undercharged.
B. charged properly.
C. overcharged.
D. damaged. - ANSWER:The correct answer is A. If the so-called "green eye" is not visible, the green tip
of the built-in hydrometer is not floating high enough in the electrolyte to be visible. A fully charged
battery will cause the built-in hydrometer to float to the top of the electrolyte and allow the green tip of
it to be seen.
Both headlights on a vehicle are dim on high beam but are normal on low beam. Technician A says that a
poor headlight ground could be the cause. Technician B says that a shorted headlight switch could be the
cause. Who Is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is D, neither technician is right. A poor headlight ground
would cause both the high and low beam lights to be dim. A shorted headlight switch would only cause
the headlights to operate incorrectly or not at all.
Systems): Questions & Answers
An air bag system is being serviced, Technician A says to disconnect the yellow SRS connectors at the
front of the vehicle. Technician B says to disconnect and isolate the negative battery cable.
Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is B. Always disconnect the negative battery cable and
wrap with tape so contact cannot be made. Follow the specific vehicle's disarming instructions, as some
SRS system can retain backup power for an additional period of time.
Which of these should be used when soldering electrical wiring connections?
A. Rosin core flux
B. Acid core flux
C. Sulfur core flux
D. None of the above - ANSWER:The correct answer is A. For best results and less corrosion at the solder
point, a rosin core flux should be used.
When testing computer-controlled systems, a digital multimeter should be used with an input
impedance of at least:
A. 10k ohms
B. 100k ohms
C. 1 megohm
D. 10 megohms - ANSWER:The correct answer is D. For maximum protection to the computer-controlled
system, or any electronic circuit, it is best to use at least a 10-megohm impedance digital multimeter.
When troubleshooting a slow drain on the battery, which of these diagnostic tools should be used?
A. Ohmmeter
B. Ammeter
C. Voltmeter
,D. Test light - ANSWER:The correct answer is B. Always us an ammeter or a low amperage amp clamp
with your DMM to troubleshoot a slow drain in an electrical circuit.
The condition of a lead-acid battery is being checked. Technician A says to use a galvanometer.
Technician B says to use a capacitive battery tester. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is B. A galvanometer is an analog type voltmeter. OEMs
almost universally recommend the use of a non-intrusive conductive-capacitive type battery tester.
While testing a starting circuit on a 5.7L V8 engine, the technician finds that the engine cranks slowly.
The starter current draw is 90 amps, and the battery voltage while cranking is 11 volts. What should the
technician do next?
A. Check voltage drop of the starter motor circuit
B. Test the battery capacity
C. Replace starter motor, as a short is indicated
D. Determine condition of the engine - ANSWER:If an engine cranks slowly and the starter current draw
is only 90 amps and the voltage is as high as 11 volts, the technician should next check for excessive
voltage drop in the start motor circuit.
Technician A says that a noisy alternator could be caused by a bad diode. Technician B says that a noisy
alternator could be caused by a worn bearing. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is C, both technicians are right. Worn alternator bearings
and/or a bad alternator diode will cause the alternator to be noisy.
A vehicle's turn signals flash too slowly. Technician A claims that the condition could be caused by a
faulty flasher. Technician B says that a bulb may be the wrong type. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is C, both technicians are right. Both an improperly rated
flasher and an incorrect wattage bulb can cause the turn signals to flash at incorrect intervals.
, Technician A says a short circuit to ground in a circuit will decrease resistance. Technician B says a short
circuit will increase current flow. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is C, both technicians are right. A short to ground has
little or no resistance. Current flow increases as resistance decreases.
When using a voltmeter to check for voltage in a circuit, the voltmeter should first be connected to check
for:
A. source voltage.
B. excessive resistance
C. excessive amperage.
D. a good ground. - ANSWER:The correct answer is A. A voltmeter should first be used to see if the circuit
is getting power before during further tests.
When checking the green eye of a sealed maintenance-free battery, no color seen indicates that the
battery is:
A. undercharged.
B. charged properly.
C. overcharged.
D. damaged. - ANSWER:The correct answer is A. If the so-called "green eye" is not visible, the green tip
of the built-in hydrometer is not floating high enough in the electrolyte to be visible. A fully charged
battery will cause the built-in hydrometer to float to the top of the electrolyte and allow the green tip of
it to be seen.
Both headlights on a vehicle are dim on high beam but are normal on low beam. Technician A says that a
poor headlight ground could be the cause. Technician B says that a shorted headlight switch could be the
cause. Who Is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER:The correct answer is D, neither technician is right. A poor headlight ground
would cause both the high and low beam lights to be dim. A shorted headlight switch would only cause
the headlights to operate incorrectly or not at all.
