XJ-S Convertible (XJ27) V12-6.0L (1994)
Engine Control Module: Description and Operation
Fuel Injection ECM
Engine Management / Fuel Injection
PURPOSE
The ECM provides precise control of fuel injection to ensure optimum performance and strict emissions compliance.
OPERATION
Various engine sensors and other systems supply ECM with operating information. ECM processes sensor inputs and sends output signals in order to
maintain optimum air/fuel ratio. ECM also monitors exhaust gas oxygen content by way of input from a pair of oxygen sensors. When adjustments
are needed, ECM varies injector pulse width ("ON" time) as the means of controlling air/fuel ratio.
Input signals include:
^
Engine Speed Signal from Ignition ECM
^
Engine Temperature