Amigo 4WD L4-2.3L (4ZD1) (1989)
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Voltage Signal: Description and Operation
Ignition Coil Wire Connector
The ECM receives engine speed (RPM) information from ignition coil references pulses. This is one of the input signals required for the ECM to make
air/fuel ratio adjustments. It is also factored in when the ECM calculates other input and output data.
