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Checking return flow rate of injectors (piezo injectors) with engine running > < Checking injectors (piezo injectors)

A4 Mk2

Adaption of injector delivery calibration values and injector voltage calibration values
Adaption of injector delivery calibration values and injector voltage calibration values
The „Injector delivery calibration“ and „Injector voltage calibration“ functions serve to correct the injection rates for each cylinder of a common rail system individually across the entire operating range.
   
The 7-digit adaption values -1- (details in illustration are only an example) are marked separately on each injector. They may consist of letters and/or numbers (ASCII code).
  A23-10026
Reference table for reading out letters and/or numbers on each injector
When a new injector is installed, the adaption value for the new injector must be written into the engine control unit.
When the engine control unit is renewed, the appropriate „injector delivery calibration“ values with „injector voltage calibration“ values must be written into the new control unit.
The adaption procedure is described in the Guided Fault Finding. (The procedure is also described under Guided Functions.)
Additionally, check that the „injector delivery calibration values“ with „injector voltage calibration values“ are correctly entered for all the other injectors. Do NOT attempt to re-enter these calibration values if the correct values are already stored in the engine control unit.
–  Enter correct vehicle identification in Guided Fault Finding.
–  Press „Go to“ button.
–  Press „Function/component selection“.
–  Select „Drive train“.
–  „01 - Self-diagnosis compatible systems“
–  „01 - Engine electronics“
–  Select „01 Functions“.
–  Select „J623 Injector delivery calibration (quantity adjustment) with IVA“
  A23-10137

Checking return flow rate of injectors (piezo injectors) with engine running > < Checking injectors (piezo injectors)