3
ELECTRONIC FUEL INJECTION ENGINE CONTROL
Technical Instruction
1. Performance and configuration of engine control
Engine control system and micro computer
This vehicle uses many different electronic control devices which make use of a microcomputer. Ones equipped in
vehicles are: engine control system and automatic transmission control system. Use of a microcomputer makes it pos-
sible to handle a large amount of information in such a short time. Computer allow for highly accurate, multifunction
system control. Described in this section is the engine controller utilizing a microcomputer.
The controller used in the engine control system is called ECM (Electronic Control Module) also known throughout this
manual as engine control module.. Its components, configuration and connection with the actuator are shown in the
figure below.
When the input signal from the sensor enters the ECM, it passes through the input circuit first. If it is an analog signal, it is
converted into a digital signal by the A/D converter and then inputted to the microcomputer. If it is a digital signal, it is
inputted to the microcomputer as it is. The microcomputer processes these input signals and outputs the results through
the output circuit to the actuator.
To Next Page
Loading...
Need help?
General
