XJ-S Convertible (XJ27) V12-6.0L (1994)
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Engine Speed Sensor: Description and Operation
Engine Speed Signal Input
PURPOSE
To Provide EFI ECM with an engine speed signal to be used in fueling calculations.
Speed Sensor Scope Pattern
OPERATION
The ignition ECM generates an engine speed signal to the EFI ECM. Signal frequency is 6 pulses per engine revolution.
