2011 Polaris Ranger RZR ATV Service Manual, Page 147Get this manual
ELECTRONIC FUEL INJECTION IGNITION COIL
Operation Overview
The ignition coil is used to provide high voltage to fire the spark plugsWhen the ignition key is on, DC voltage is present in primary side of the ignition coil windingsDuring engine rotation, an AC pulse is created within the crankshaft position sensor for each passing tooth on the flywheelThe two-tooth gap creates an "interrupt" input signal, corresponding to specific crankshaft positionThis signal serves as reference for the control of ignition timingThe ECU then calculates the time interval between the consecutive pulses, and determines when to trigger the voltage spike that induces the voltage from the primary to the secondary coil windings to fire the spark plugs
Ignition Coil Tests
The ignition coil can be tested by using an ohm meterUse the following illustration and specification table to test the ignition coil resistance
Ignition Coil Resistance Readings
Test Primary Secondary Primary Test Measure Between Connector Pins 0.4 Pin Connection BetweenBetweenBetween High Tension Lead End Caps Resistance 0.4 6.7k 5