Xtool D8 BT, User Manual

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5.7 INJECTOR CODING
This function can write the identification code of the fuel
injector into the ECU so that the ECU can recognize and work
normally. Write actual injector code or rewrite code in the ECU
to the injector code of the corresponding cylinder for controlling
accurately and correcting cylinder injection quantity.
After the ECU or injector is replaced, the injector code of each
cylinder must be confirmed or re-coded so that the cylinder can
better identify injectors to accurately control fuel injection.

In general cases, there is no need to do the coding matching
function after cleaning.

The identification of the fuel injector includes its working
accuracy value and type value. When replacing it, you need to
find the corresponding model for replacement.

At present, mainstream cars support injector coding functions.
The operation guidelines of the Injector Coding function
are shown as below:
1. Enter the Injector coding menu and choose relevant
chassis models according to the vehicle being tested.
2. Enter the Fuel injection nozzle injection volume
adjustment menu.