Swift L4-1298cc 1.3L SOHC MFI (1997)
Engine Control Module: Description and Operation
General Description
ECM is installed to the underside of the instrument panel at the passenger 5 seat side. ECM is a precision unit consisting of microcomputer, A/D
(Analog/Digital) converter, I/O (Input/Output) unit, etc..
It is an essential part of the electronic control system, for its functions include not only such a major function as to control fuel injector, ISC
actuator, fuel pump relay, etc. but also on-board diagnostic system (self-diagnosis function) and fail-safe function as described in the following
section.