All courses
From foundations to expert manufacturer diagnostics — 18 courses across 6 levels.
The Diagnostic Loop
Intake → Hypothesis → Test → Evidence → Repair → Verify. The engineering method applied to vehicles.
Evidence Before Parts
Why the parts cannon fails and how to never fire it again.
Voltage Drop Testing Masterclass
The single most underused test in automotive. Master it on real circuits.
Reading Wiring Diagrams
From OEM schematics to a testable plan in minutes.
Parasitic Battery Draws
Voltage-drop across fuses, sleep current, wake-event hunting.
Live Data Essentials
PIDs that matter, normal ranges, and the patterns that betray a lie.
Fuel Trim Decoded
STFT, LTFT, commanded vs actual, vacuum leaks vs MAF vs injectors.
Oscilloscope Foundations
Probes, grounding, timebases and capturing clean signals.
CAN Bus with a Scope
Differential signalling, dominant/residual, termination and fault frames.
Crank & Cam Synchronisation
Trigger wheels, phasing, VVT and the timing belt that lies.
Differentiator Testing
One test that splits two hypotheses — designing decisive tests.
BMW N20 Timing Chain
Symptoms, cold-start rattle, ISTA test plan, the vacuum trick.
Audi 2.0 TFSI Oil Consumption
Piston ring TSB, VCDS readiness, distinguishing rings from PCV.
Mercedes OM651 Injector Seals
Black death, XENTRY adaptations, leak-down vs injector code.
Toyota Hybrid Inverter Integrity
Techstream HV diagnostics, insulation resistance, safe isolation.
Ford 1.5 EcoBoost Timing
Wet belt failure, FDRS, low-pressure fuel diagnosis.
Opel M32 Gearbox
Bearing failure signatures, OP-COM, clutch vs mechatronic.
Land Rover AIRMATIC/EAS
SDD, compressor rebuild, valve block leaks vs sensor drift.