1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 327Get this manual
ELECTRICAL Trigger Coil Testing
Trigger Coil (Hall Effect Sensor) Testing Polaris Engines
The ''trigger coils" are Hall Effect sensors and require constant DC power source via the brown wire out of the COl moduleThe wire is powered when the engine is cranked for starting and while runningWhen magnet (sealed in the magnet holder on the flywheel) is passed by the sensor, the sensor becomes conductive and triggers the release of the energy stored in the capacitor, creating the ignition spark1To test trigger coils, disconnect the stator wires and attach volt battery to the brown and black wires from the stator plateConnect one lead of an ohmmeter to the black stator wireConnect the other lead to the red, green, or blue sensor wireRefer to the illustration at rightRotate flywheel slowly while observing the ohmmeter indication The ohmmeter should indicate an open circuit (00) until the magnet in the magnet holder passes by the sensorAt this point the reading should switch to low resistance (under 25 ohms)It should go back to infinite as flywheel rotation continuesRepeat the test for the other trigger coilsEXCITERS