Curriculum

Built module by module, in the order a technician actually needs it.

Nothing here is abstract school physics. Every concept is introduced through the vehicle, and every lesson ends with a decision you would make at the bench.

Voltzs V1 — Practical Auto Electrical Diagnostics

Module 01foundation

Battery & Fundamentals

6 lessons

By the end of this module

Prove whether a battery, connection or circuit can carry the load before replacing parts.

Module 02foundation

Starting & Charging

5 lessons

By the end of this module

Separate battery, cable, control and machine faults with a repeatable starting and charging test routine.

Module 03intermediate

Fuses, Relays & Distribution

6 lessons

By the end of this module

Use loaded tests to find failed protection, relay control and distribution paths without guesswork.

Module 04intermediate

Sensors & Signals

9 lessons

By the end of this module

Interpret live readings and waveforms, then prove whether the fault is wiring, input, control or output.

Module 05intermediate

Vehicle Circuits

8 lessons

By the end of this module

Trace complete real-vehicle circuits and isolate faults across feeds, grounds, controls and loads.

Module 06advanced

Vehicle Networks & Data Buses

6 lessons

By the end of this module

Diagnose network opens, shorts, termination faults and failed nodes with the correct tools and evidence.

Module 07advanced

Emissions & Aftertreatment

6 lessons

By the end of this module

Separate electrical command and sensor faults from genuine flow, temperature and aftertreatment problems.

Module 08specialist

Diagnostic Method

10 lessons

By the end of this module

Follow a repeatable evidence-led process from complaint to proven cause and verified repair.