ASE A6
Electrical/Electronic Systems (A6)
The ASE A6 Electrical/Electronic Systems test covers circuit diagnosis with meters, scan tools and wiring diagrams, plus batteries, starting, charging, lighting and body electrical systems. It is taken by technicians who track down electrical faults and counts toward ASE Master Automobile Technician status.
- Questions you sit
- 60
- Scored
- 50
- Time allowed
- 90 min
- GearheadPass questions
- 152
From ASE's 2026 study guide. The test includes 10 unscored research questions you can't tell apart from the scored ones.
Content areas and weights
| Content area | Questions on the test | Share | Free practice |
|---|---|---|---|
| General Electrical Diagnosis | 13 | 26% | 5 questions → |
| Battery & Starting | 9 | 18% | 5 questions → |
| Charging | 5 | 10% | 5 questions → |
| Lighting | 6 | 12% | 5 questions → |
| Body Electrical | 17 | 34% | 5 questions → |
Study each area
A6 · 13 questions on the test
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.
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.
Take a full-length A6 mock in the app
60 questions in 90 minutes, weighted like the real test, scored by content area, with English or Spanish on every question.
