Adaptation of injectors (Audi Q5-8R)

"Quantity correction (IMA)" and "voltage correction (ISA)" are designed to correct the amount of fuel injected by the Common Rail system into each cylinder within the permissible range. Seven-digit adaptation code "1" (the data in the figure is for example purposes only) is printed on each injector. The printed values can be letters and/or numbers (code-AScll).



When replacing an injector, the value for its adaptation must be written into the engine control unit. When replacing an engine control unit, the "quantity correction values" and "voltage correction values (ISA)" must be written into the new engine control unit. In addition, it must be checked that the "quantity correction value (IMA)" and "voltage correction value (ISA)" are entered correctly for all other injectors. If the correct correction values are written into the engine control unit, they must not be re-entered. The adaptation process is described in the Guided Fault Finding mode. Use the Tester for this.



[The original article is available on the website: AudiManual]