Discovery I (LJ) V8-3.9L (1994)
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Engine Control Module: Description and Operation
PURPOSE AND OPERATION
The Multiport fuel injection system is controlled by the 14 CUX Engine Control Module (ECM) comprising of a microprocessor with integrated
circuits and components mounted on printed circuit boards. The ECM is connected to the main harness by a 40 pin plug.
The ECM is the heart of the vehicle's fuel delivery system. It monitors information from several inputs to determine the fuel delivery strategy
required to produce efficient operation. As the sophistication of the fuel injection system increases, the amount of information processed by the
ECM also increases.
Additional strategies to cover fueling requirements for situations such as cold starting, hot starting, and wide-open throttle acceleration may also be
added to the ECM software.
