100+ Free ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) Practice Questions
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Cleaning corroded battery terminals on a heavy truck is important because corrosion:
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Key Facts: ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) Exam
60
Total Questions (50 scored)
ASE Medium/Heavy Truck T6 test
90 min
Testing Time
ASE T6 test information
~$59
Test Fee
ASE registration pricing
28 / 22 / 14 / 12 / 24
Content Area Weighting
ASE T6 content area outline
Criterion
Referenced Scoring
ASE certification scoring policy
2 years
Work Experience Requirement
ASE certification requirements
ASE T6 is a 60-question medium/heavy truck Electrical/Electronic Systems test with 50 scored multiple-choice items and 10 unscored research questions, administered in 90 minutes at a Prometric test center. Scoring is criterion-referenced and the passing standard is set by ASE. The official content areas weight General Electrical/Electronic System Diagnosis at 28%, Battery & Starting System at 22%, Charging System at 14%, Lighting Systems at 12%, and Related Vehicle Systems at 24%. Certification generally requires two years of relevant work experience, with up to one year substituted by formal training.
Sample ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) Practice Questions
Try these sample questions to test your ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1A 12-volt circuit has a resistance of 4 ohms. Using Ohm's law, how much current flows in the circuit?
2Two 6-ohm resistors are connected in series across a 12-volt source. What is the total circuit current?
3Two 6-ohm resistors are connected in parallel. What is the total resistance of the combination?
4A technician measures a voltage drop of 0.8 volt across a starter ground cable while cranking. What does this reading indicate?
5When performing a voltage drop test on a heavy-truck battery cable, the digital multimeter (DMM) leads should be connected:
6Technician A says a clamp-type (inductive) ammeter can measure starter current without breaking the circuit. Technician B says a DMM in current mode should be placed in series with the starter to read cranking amps. Who is correct?
7A wiring diagram shows a circuit with a relay. The relay control (coil) side typically operates on:
8A circuit has 12 volts applied and draws 6 amps. What is the power consumed by the load?
9An open in a series circuit will cause:
10A short to ground in a circuit protected by a fuse will most likely cause:
About the ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) Exam
ASE T6 is the Electrical/Electronic Systems certification test in the ASE Medium/Heavy Truck series. It measures a technician's ability to diagnose and repair general electrical circuits, batteries and starting systems, charging systems, lighting, and related vehicle systems including gauges, multiplexing, J1939 datalinks, body/cab accessories, HVAC controls, and the electronic engine control interface.
Assessment
50 scored multiple-choice (60 total incl. 10 unscored) (official ASE); this practice bank is 100 selected-response items
Time Limit
90 minutes
Passing Score
Criterion-referenced (set by ASE)
Exam Fee
~$59 (ASE registration) (ASE (National Institute for Automotive Service Excellence))
ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) Exam Content Outline
General Electrical/Electronic System Diagnosis
Ohm's law and power calculations, series and parallel circuits, voltage drop testing, DMM and clamp meter use, wiring diagram interpretation, relays and solenoids, circuit protection, and shorts/opens/high-resistance diagnosis.
Battery & Starting System Diagnosis & Repair
Heavy-duty battery types (group 31, AGM), state of charge, open-circuit and load testing, specific gravity, series-parallel switch operation, starter circuits, cranking voltage, current draw, and no-crank diagnosis.
Charging System Diagnosis & Repair
Alternator operation and three-phase rectification, voltage regulation, charging output testing, AC ripple diagnosis, brushes and slip rings, and charging-circuit voltage drop testing.
Lighting Systems Diagnosis & Repair
Headlamp aiming, LED versus incandescent lighting, hyperflash and load resistors, FMVSS 108 requirements, 7-way trailer wiring, and dim or inoperative lamp diagnosis.
Related Vehicle Systems Diagnosis & Repair
Gauges and instrumentation, multiplexing and body controllers, J1587/J1708 and J1939 CAN datalinks, terminating resistors, SPN/FMI diagnostic trouble codes, HVAC controls, body/cab accessories, and the electronic engine control interface.
How to Pass the ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) Exam
What You Need to Know
- Passing score: Criterion-referenced (set by ASE)
- Assessment: 50 scored multiple-choice (60 total incl. 10 unscored) (official ASE); this practice bank is 100 selected-response items
- Time limit: 90 minutes
- Exam fee: ~$59 (ASE registration)
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) Study Tips from Top Performers
Frequently Asked Questions
How many questions are on the ASE T6 test?
The official ASE T6 test has 60 total multiple-choice questions, of which 50 are scored and 10 are unscored research items used to evaluate future questions. This free practice bank provides 100 selected-response questions so you can drill every content area more deeply.
How much time do I get and what does ASE T6 cost?
ASE allots 90 minutes of testing time for the T6 test, administered at a Prometric test center. The T6 test fee is about $59, plus a one-time registration fee when applicable. Confirm current pricing on the ASE website before registering.
What is the passing score for ASE T6?
ASE tests are criterion-referenced, meaning the passing standard is set by ASE based on the knowledge required to perform competently rather than a fixed percentage you can predict. Focus on mastering each content area rather than chasing a specific number.
What experience do I need for ASE T6 certification?
ASE certification generally requires two years of relevant hands-on work experience. Up to one year can be substituted with relevant formal training. You can take the test first, but certification is granted only after the experience requirement is documented.
What content areas matter most on ASE T6?
The largest areas are General Electrical/Electronic System Diagnosis at 28% and Related Vehicle Systems at 24%, followed by Battery & Starting at 22%, Charging at 14%, and Lighting at 12%. Weight your study time toward general electrical diagnosis and datalink-related systems.
Does ASE T6 cover J1939 and diagnostic trouble codes?
Yes. The Related Vehicle Systems area includes multiplexing, J1587/J1708 and J1939 CAN datalinks, terminating resistors, and SPN/FMI diagnostic trouble codes, along with gauges, HVAC controls, body accessories, and the electronic engine control interface.