Introduction

Introduction





Different Electronic Systems
There are a number of different electronic systems for controlling quantity of fuel, idling speed and ignition.

There are for example
- Systems with separate control modules for fuel-, ignition- and idle control.
- System with common control modules for all three functions.
- System which also control other functions including engine cooling fan (FC) and air conditioning etc.
- The differences between the systems in number and type of sensor.
This depends on which functions the control module controls, who the supplier of the system is and in certain cases also legal requirements. The rapid advances in the field of electronics over the last few years has also contributed to the fact that there are now a number of different systems in our cars.
Even if the systems are different and do not have the same number of functions the basic principles are the same for all systems.