ASE Certification Electrical and Electronic Systems (A6) Practice Test
Build your confidence for ASE Certification Electrical and Electronic Systems (A6). Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.
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Official ASE A6 Electrical/Electronic Systems certification exam prep. Covers general electrical diagnosis, battery and starting systems, charging systems, lighting and instrumentation, and accessories. Administered by ASE. Key domains include Body Electrical Systems Diagnosis and Repair, General Electrical/Electronic System Diagnosis, Battery and Starting System Diagnosis and Repair and Lighting Systems Diagnosis and Repair.
Sample Questions
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A 2022 half-ton pickup has a no-crank complaint. Battery voltage is 12.67 V. During a start request, voltage at the starter B+ terminal is 12.41 V, voltage at the solenoid S terminal is 11.9 V, and voltage between starter case and battery negative rises to 1.05 V. The engine turns freely by hand, and an aftermarket phone charger is plugged into the console outlet. Which repair is indicated?
A 2025 light-duty pickup has an airbag warning lamp after steering column trim replacement. Horn and steering-wheel audio switches are intermittent. The driver airbag circuit has high resistance when the wheel is turned left, and the radio presets were lost during a previous service visit. Which component is most suspect?
A 2023 hybrid crossover has an inoperative power mirror and a stored LIN-bus lost-communication code. The mirror fuse has battery voltage on both sides. At the mirror connector, power and ground are good, but the LIN wire stays at 11.9 V with no pulsed activity when the scan tool commands mirror movement. The door trim was removed for glass service, and an aftermarket phone charger is plugged into the console outlet. Which fault best fits these findings?
During diagnosis on a 2019 delivery van, a technician backprobes a Hall-effect speed sensor. The sensor has 5.01 V reference and 0.03 V ground drop. The signal stays at 4.9 V while the wheel is spun by hand; unplugging the sensor leaves the signal at 5.0 V. Service information shows a pull-up circuit in the module, and the vehicle has a recent alignment invoice in the glove box. What is the best next step?
A 2021 compact SUV with an AGM low-voltage battery has a slow crank after being charged overnight on a conventional flooded-battery setting. Open-circuit voltage is 12.45 V after the surface charge is removed, capacitance tests at 54 percent of rating, and the customer says the start-stop system has been disabled for a week. The tire-pressure lamp is also on after a seasonal temperature drop. What should the technician do?
Career Opportunities & Salary
Exam insights and study advice
Modern vehicles are defined by their electrical and electronic systems, which control everything from engine management and safety features to driver comfort and infotainment. A failure in these systems can render a vehicle inoperable, unsafe, or unreliable. Mastery of A6 content is not optional for today's technician; it is essential. Certified technicians can diagnose complex, intermittent electrical faults efficiently, repair sophisticated networks like CAN bus systems, and correctly service advanced driver-assistance systems (ADAS) components. This directly translates to higher first-time repair rates, increased customer satisfaction and safety, and greater shop profitability by avoiding misdiagnosis and comebacks.
What this exam covers
Use the published domain weights to plan your study. Practice results do not predict your certification exam score.