Injector Adjustment
When the injectors are manufactured, a multitude of measurement data is recorded at specific points in the factory. In this way, the tolerance ranges for injector-quantity adjustment are determined and specified in a six-digit number combination.
Information on the lift performance of the injector is also added for injector voltage adjustment. Injector adjustment is required because of the individual voltage demand of each piezo actuator. An allocation is made to a voltage demand category, which is included in the number combination on the injector.
These data items are transmitted to the ECM. During engine operation, these values are used to compensate for deviations in the metering and switching performance.
Note. When replacing an injector, it is absolutely essentially to carry out an injector adjustment.
