ASE A6 · Electrical/Electronic Systems
General Electrical Diagnosis
Core circuit diagnosis: voltage, voltage drop, current and resistance checks, waveforms, wiring diagrams, finding shorts and opens, parasitic draw, network faults and module programming.
- Questions on the A6 test
- 13
- Share of the test
- 26%
- GearheadPass questions
- 36
- With exhibits
- 7
What this area covers
ASE's task list for General Electrical Diagnosis on the A6 Electrical/Electronic Systems test groups into these tasks. Expect diagnosis-first questions: what's the most likely cause, what should be checked next, and which technician is right.
- Voltage, voltage drop and current tests
- Continuity, resistance and waveforms
- Scan tool data and DTCs
- Shorts, opens and parasitic draw
- Fuses, diodes and wiring diagrams
- Data bus networks and module setup
How to study it
- This area carries 13 of the A6 test's questions (26%). Give it study time in proportion.
- Work the free questions first, then read every explanation, including the ones you got right; the reasoning is what transfers to new questions.
- 2 of the 5 free questions here are Technician A/B items. Judge each statement on its own before you pick A only, B only, Both or Neither.
- 1 free question uses an exhibit. Read the exhibit's numbers before the answer options.
- Always confirm specifications in the vehicle manufacturer's service information. Test questions assume you would.
Free practice quiz
5 General Electrical Diagnosis questions with explanations
All 36 General Electrical Diagnosis questions are in the app
Plus a full-length A6 mock, flash cards, and English or Spanish on every question.
More A6 content areas
A6 · 9 questions on the test
Battery & Starting
Low-voltage battery and starting system service: battery types and testing, charging and jump-starting, memory retention, starter draw and voltage drop tests, and slow or no-crank diagnosis.
A6 · 5 questions on the test
Charging
Charging system diagnosis and repair: no-charge, low-charge and overcharge faults, output and voltage drop tests, alternator controls, drive belts and alternator replacement.
A6 · 6 questions on the test
Lighting
Lighting system diagnosis and repair: exterior and interior lamps, headlamp aiming and leveling (including HID, LED and adaptive lights), turn signals and hazards, and trailer wiring.
A6 · 17 questions on the test
Body Electrical
The largest A6 area: diagnosing instrument clusters and infotainment, power accessories, heated and cooled features, security systems, and safety systems such as airbags, wipers and cameras.