This function resets teach-in injection correction values and should be run when replacing injector or engine control unit (PCM). After the reset a new teach-in of pilot injection is performed, teach-in takes place at five pressure points in the fuel rail and is repeated a total of three times. Three of the pressure points are taught-in at normal idle rpm and the other two at increased idle rpm.
Test conditions:
Engine on.
Fuel temperature 25 - 65 °C.
Cylinder head temperature 65 - 90 °C.
Intake air (IAT) should be between 15 °C - 80 °C.
No faults in the system.
While basic setting is in progress no controls may be activated.
Difference between desired and actual pressure in fuel rail under 10 bar.
Difference between desired engine rpm and actual engine rpm under 75 rpm.
Requested fuel quantity may not be too high.
Idle control should be stable.
Deviation values for cylinder balancing should be stable.
Idle correction quantity should be stable.
Procedure:
Start the function.
Follow the instructions in the program.
The function is done.
If the function fails, check the test conditions and repair any faults.