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ASE A6 Practice Test

Take this free ASE A6 Practice Test to study for your ASE A6 certification exam. Our ASE A6 test prep is written by John Kershaw, an ASE test question developer and ASE Certified Master Technician. To prepare for the ASE A6 exam, use our ASE A6 Practice Test.  See the links below for free ASE A6 flash cards. To prepare for additional ASE A Series certifications, use our Complete A1-A8 Practice Test Kit with 800 questions.

General Electrical/Electronic System Diagnosis 

1 When using a DMM (Digital Multimeter) voltmeter function to check for a voltage drop, meter leads should be connected in which of the following ways?
Incorrect. Please choose another answer.
Voltage is always checked in parallel or across the device or circuit.

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2 Which of the following is correct regarding a series circuit?
Incorrect. Please choose another answer.
Based on Kirchhoff's Voltage Law: Voltage higher before resistance than after, which is the result of total applied voltage not equal at both ends of a single load circuit. Resistance in circuit opposes electron flow with resulting voltage loss applied to load. The Loss is voltage drop with the voltage lost/consumed as current moves through resistance. HIGHER Resistance, HIGHER DROP.
3 When a Digital Multimeter (DMM) is used to measure DC voltage and is connected in parallel to the load device, which of the following defines the reading?
Incorrect. Please choose another answer.
Based on Kirchhoff's Voltage Law: Sum of voltage drops in any circuit will equal source VOLTAGE or VOLTAGE applied to circuit.
4 Which of the following tools can be used to check the continuity of wires that carry digital signals?
Incorrect. Please choose another answer.
A logic probe is the only device that measures digital signals.

Battery and Starting System Diagnosis and Repair 

5 Using a DMM (Digital Multimeter), a fully charged 12 volt battery should indicate how much voltage on the open circuit voltage (OCV) test?
Incorrect. Please choose another answer.
The standard is 2.1 volts per cell and 2.1 times 6 is 12.6 volts.

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6 Two technicians are discussing a battery's state of charge. Technician A says a specific gravity of 1.265 at 80F indicates that a battery's state of charge is approximately 100%. Technician B says you can use a hydrometer to check battery state of charge on a VRSLA (Valve Regulated Sealed Lead Acid) battery. Who is right?
Incorrect. Please choose another answer.
Tech A is correct. If the battery has removable filler caps, the specific gravity of the electrolyte can also be checked. A hydrometer is a tester that measures specific gravity. The specific gravity test indicates the state of battery charge and can indicate a defective  battery if the specific gravity of one or more cells varies by more than 0.050 from the value of the highest-reading cell.
 
Specific GravityBattery Voltage (V)State of Charge
1.26512.6 or higher100% charged
1.22512.475% charged
1.19012.250% charged
1.15512.025% charged
Lower than 1.12011.9 or lowerDischarged

Tech B is incorrect because VRSLA batteries do not have openings to check the specific gravity of the electrolyte with a hydrometer. They are sealed.
 
7 When performing a load test on a battery, a technician finds that the battery voltage drops below specifications during both a conductance and load test. Which of the following is the MOST likely action to perform?
Incorrect. Please choose another answer.
The battery was tested under load and failed.
8 Two technicians are discussing testing a battery using an electronic conductance or continuity tester. Technician A says some of these testers can load test a battery. Technician B says you need to make sure that the ignition switch and all accessories are off. Who is right?
Incorrect. Please choose another answer.
Technician A is wrong because this device cannot apply a load. It checks battery conductance.

Charging System Diagnosis and Repair 

9 Two technicians are discussing an alternator with zero output. Technician A says the field circuit may have an open circuit. Technician B says the fusible link may be open from the battery to the alternator. Who is right?
Incorrect. Please choose another answer.
Both statements are correct.
10 This question has the word EXCEPT. Read the question carefully before choosing your answer. An alternator has low output and is being full-fielded to determine the cause. All of the following can result from full-fielding the alternator, EXCEPT:
Incorrect. Please choose another answer.
Full fielding removes the regulator from controlling field current allowing the alternator to go to full output and is unlikely to produce a low battery voltage. This action normally produces high current and voltage. P (Power) = I (Current) x E (Voltage) and is least likely to occur.

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11 Technician A says a loose serpentine alternator drive belt could cause overcharging. Technician B says undersized wiring between the alternator and the battery could cause undercharging. Who is right?
Incorrect. Please choose another answer.
Technician A is wrong because a slipping belt will cause undercharging. Technician B is correct because undersize wiring will cause undercharging due to higher resistance.
12 The figure below shows a belt tensioner with lines or marks that indicate: proper tension, belt wear and/or the need for replacement. Technician A says when you install a new belt, the three line marks close to each other should be where they are, in proximity to the silver arrow on the belt tensioner, as shown in the above figure, if the belt is properly tensioned. Technician B says to always check the on-line service information for the belt wear indicators. Who is right?
Incorrect. Please choose another answer.
Tech B is right because you always check the on-line service information for the exact marks where the tensioner should be located for proper tension or the proper belt tensioning procedure. Tech A is wrong because the silver arrow must line up with one of the three marks on the left of the figure because the further to the right the tensioner is, the more tension applied to the belt, which is what takes place when a new belt is installed.  

Lighting Systems Diagnosis and Repair 

13 Technician A says high-intensity discharge (HID) headlights are generally brighter and have a blue tint. Technician B says a defective turn signal bulb on one side can cause the turn signal on that side not to blink. Who is right?
Incorrect. Please choose another answer.
Both statements are correct.

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14 This question contains the word EXCEPT.  Read the question carefully before choosing your answer. All of the following may cause a dim low beam right side headlight, EXCEPT:
Incorrect. Please choose another answer.
A low alternator output can cause all of the lights to dim not just one light.  All of the other choices will cause the right-side headlight to be dim.
15 Technician A says you aim HID (High Intensity Discharge) headlights on a level floor with an unloaded vehicle. Technician B says when aiming any headlights, you must follow the state inspection specifications. Who is right?
Incorrect. Please choose another answer.
Both statements are correct
16 Technician A says an aiming screen will work on any headlight design to aim the headlights. Technician B says mechanical aimers are used on HID (High Intensity Discharge) headlights. Who is right?
Incorrect. Please choose another answer.
Technician A is correct because the aiming screen is the tool of choice due to the many different headlight designs used. Technician B is wrong because mechanical aimers are no longer used and were never used on HID headlights.

Instrument Cluster & Driver Information Systems Diagnosis & Repair 

17 Which of the following describes the MOST common type of electrical wiring used in instrument lighting?
Incorrect. Please choose another answer.
Copper stranded type electrical wiring is the correct answer because the other types are not common.
18 What type of solder is required to repair the instrument panel wiring?
Incorrect. Please choose another answer.
Rosin core is the specified type of solder to use on any electrical repair to insure integrity.

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19 A dash indicator warning lamp does not light when the key is in the ON or START positions. What should you check first?
Incorrect. Please choose another answer.
Checking the bulb is the quickest and easiest thing to do.
20 If a fuel gauge reads full, which of the following is the MOST likely cause?
Incorrect. Please choose another answer.
A wire to the sending unit being grounded is the most likely cause on most systems.
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Related Links

Quality starts with who wrote the material. Our writers:

John Kershaw, ASE Test Prep Expert, is an ASE Certified Master Technician, an auto industry technical instructor and is an ASE Test Question Developer. He is among the first certified by the ASE in 1972.

How should I study for the ASE A6 exam?

Practice tests and flash cards are an effective way to study for the ASE A6 exam. They help you learn the subject matter and practice your test taking skills. The ASE A6 exam is taken on a computer, so practicing with online practice tests can boost your chance of success.

What is on the ASE A6 Exam?

The National Institute for Automotive Service Excellence (ASE) identifies Electrical / Electronic Systems as an individual service area for certification (A6). The diagnosis and repair of the following subjects are covered: 

  • General Electrical / Electronic Systems
  • Battery and Starting Systems
  • Charging Systems
  • Lighting Systems
  • Instrument Cluster and Driver Information Systems
  • Body Electrical Systems
The ASE A6 exam has 60 questions, 50 of which are scored, with a 90 minute completion time.
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