Fuel injection control system for diesel engine of automobile, has microcomputer detecting deviation of value of transmission characteristic of transmission path and comprising output circuit and signal transmission line

摘要

The system has a microcomputer (33) and an electronic control unit (11) for controlling fuel pressure detectors (IJ1-IJ4) and a fuel pressure sensor (27) and transmitting a request for outputting a known voltage to the injectors by communication via a communication line. The microcomputer detects a deviation of a value of signal transmission characteristic of a signal transmission path and comprises a signal output circuit and an analog signal transmission line (29) including a reference value.