Injector programming

Due to tolerances when manufacturing the injectors the injected fuel quantity may deviate between the actual and calculated fuel quantity. After manufacture these deviations are determined for every injector and a calibration value is determined, the value is converted to a code that is stamped on the injectors. This code is programmed in the engine control unit for each cylinder. Using these codes, the engine control unit corrects the calculated fuel quantity individually for each cylinder and thus improves engine operation and exhaust emissions. With this function, new calibration values can be entered in the engine control unit when replacing injectors or the engine control unit.
Note:
The injector code is located on the injector and consists of up to 6 characters, however, only the five first are used for calibration. It is important that the code that is entered is exactly the same as on the injector.
Test conditions:
Procedure:
  1. Select the injector to be programmed.
  2. Start the function.
  3. Check test conditions.
  4. Enter the new injector code which is on the new injector's label.
  5. Check that the new injector code is the same as the one on the new injector's label.
  6. Function complete.