Injection quantity compensation
If the DME control unit has been replaced, it will also be necessary to carry out adjustment of the injectors!
Injection quantity compensation is carried out with the aid of so-called adjustment values.
The adjustment value is printed on each injector in three digits.
The adjustment values must be stored in the new control unit!
If injector quantity compensation is not carried out, the engine may run roughly or fail to start.
Read off the adjustment values and enter according to the installation location (cylinder) of the injectors:
- Connect BMW diagnosis system
- Identify vehicle
- Select "Function selection"
- Select "Service functions"
- Select "Engine electronics"
- Select "Adjustment function"
- Select "Adjust injectors"
- Select "Test plan"
- The adjustment value must be entered for each cylinder.
NOTE:
Check stored fault message.
Delete fault memory.
Delete fault memory.