NOTE: If the PCM has been programmed with the latest software version using WDS, ensure that the IDM is programmed with the latest software version as well. If this was not done automatically at the re-programming stage, then it must be done manually immediately.
Otherwise increased combustion noise, increased fuel consumption and black smoke emissions may result. In the common rail injection system (two-module system) an EEC V-PCM very similar to that in the VP 30/VP 44 injection system is used.
The EEC V-PCM calculates the overall injected fuel quantity and the injection timing and then sends the calculated data to the IDM, which actuates the solenoid valve-controlled fuel injectors accordingly. The control program (the software) is stored in a memory. The execution of the program is carried out by a microprocessor.
In addition to the actuators, there are also sensors which form the interface between the vehicle and the PCM as a processing unit.
The sensors, actuators and the power supply are connected to the PCM via a multi-pin connector. Input signals from the sensors can have different forms.