AV-SCANNER guides
The testers and workshop tools worth owning, and how to use them. Each guide is free to read here and to download as a branded PDF for the workshop.
Choosing and using a vehicle communication interface
Read and clear codes without a full scan tool
Command actuators and run service routines
Measure voltage, resistance and voltage drop correctly
Check power, ground and pulses quickly and safely
Read sensor waveforms and catch intermittent faults
See inside cylinders and behind panels
Find vacuum and EVAP leaks fast
Compare temperatures to find failing components
Choose one and use it safely with a phone
Check injector pulses quickly
Test live connectors without damaging them
Check the diagnostic port and its pins
Find bearing, valve and injector noises
Spot misfires, drains and overheating parts
Measure current without breaking the circuit
See pressure as a waveform on a scope
Test vacuum actuators and bleed systems
Read cranking compression without removing plugs
Choose a phone endoscope and use it well
Test coils quickly on the vehicle
Look up a fault code, run a local diagnosis and open the right guide from the reader's own menus.
Get the app
Quick access from your home screen.