AV-SCANNER guides
Service function guides
Resets, relearns, calibrations and repairs, step by step. Each guide is free to read here and to download as a branded PDF for the workshop.
Injector Coding
Write injector calibration codes after replacing injectors
Fuel Trim Reset and Diagnosis
Read short and long term trims and reset adaptations
Fuel Pressure Testing
Measure supply pressure and pump performance safely
DPF Forced Regeneration
Run a controlled diesel particulate filter regeneration
DPF Differential Pressure Sensor Service
Test the sensor and reset its learned values
AdBlue and SCR System Reset
Service the reductant system and clear its counters
EGR Valve Adaptation
Clean or replace an EGR valve and relearn its positions
EVAP System Leak Test
Find fuel vapour leaks with a smoke machine and scan tool
Catalyst Efficiency Diagnosis
Separate a failed catalyst from sensor and engine faults
Oxygen Sensor Replacement and Test
Test heater and signal, then confirm with live data
Emissions Readiness Drive Cycle
Complete monitors before an emissions inspection
Fuel Injector Testing
Check balance, resistance and spray problems
Fuel Pump Replacement Guide
Depressurise, replace and test a fuel pump safely
Fuel Filter Replacement
Replace petrol and diesel filters and prime the system
Glow Plug Testing
Test diesel glow plugs and their control circuit
Diesel Common Rail Diagnosis
Read rail pressure and injector return data
Secondary Air System Diagnosis
Test air pump, valves and passages
Throttle Body Cleaning
Clean a throttle body without damaging it
Intake Carbon Cleaning
Deal with carbon build-up on direct injection engines
Vacuum Leak Diagnosis
Find vacuum leaks using fuel trims and smoke
NOx Sensor Service
Diagnose NOx sensors on modern diesel engines
Bad Fuel Diagnosis and Recovery
Deal with water, wrong fuel and contamination
Poor Fuel Economy Diagnosis
Find what is using the extra fuel
Diesel Air in Fuel Diagnosis
Find air leaks and bleed a diesel fuel system
Use them with the AV-SCANNER
Look up a fault code, run a local diagnosis and open the right guide from the reader's own menus.
