Auto Electricals study materials
Auto Electricals study resources

Auto Electricals case studies

Auto Electricals · Put your knowledge to work in context.

The Auto Electricals credential is a trade-level examination for technicians who diagnose, repair, and maintain the electrical and electronic systems of cars, light trucks, and commercial vehicles. It suits apprentices finishing formal training, experienced mechanics adding an electrical specialisation, and technicians moving from mechanical work into diagnostics-heavy roles. Employers and training providers use it as evidence that a candidate can reason about circuits rather than simply replace parts. The exam is delivered in two parts: multiple-choice items testing knowledge and short written responses testing diagnostic reasoning, so expect to explain a test sequence or interpret a measurement, not just pick a letter. The Auto Electricals case studies are 5 cases and about 3,012 words.

1

Dim Park Lamp and a Floating Ground

A 2012 cargo van has a left front combination lamp. The driver reports that when the left turn signal is on, the left front turn lamp flashes, but the park lamp in the same housing glows dimly in step with it; the right park lamps also flicker faintly.

662 words, about 3 min
2

Hot Slow Crank: Battery or Cable?

A 2015 3.0 L diesel pickup has a hot slow-crank complaint. The battery is rated 800 CCA and 90 Ah, and is four years old.

614 words, about 3 min
3

Trailer Reverse Lamp Fuse Blows

A 2018 pickup has an aftermarket 7-pin trailer harness installed with scotch-lock connectors. The 15 A reverse lamp fuse blows whenever the selector is moved to reverse, even with the trailer disconnected.

609 words, about 3 min
4

Intermittent CAN Bus Collapse After a Dash Camera Install

A 2017 van has an intermittent no-crank and multiple warning messages, often after driving over bumps. The scan tool communicates with the PCM but not with the BCM, ABS, or instrument cluster.

577 words, about 3 min
5

Overheated AGM Battery Charging in the Trunk

A 2017 sedan has an 80 Ah AGM battery mounted in the trunk. The battery is five years old and cranks slowly.

550 words, about 3 min