2008 Polaris Sportsman 700/800/700 X2 EFI Service Manual, Page 324Get this manual
ELECTRICAL ELECTRONIC THROTTLE CONTROL (ETC) SWITCH
ETC Switch Operation
The Electronic Throttle Control (ETC) system is designed to stop the engine of an ATV in the event of mechanical problem with the throttle mechanismThe ETC switch is mounted independently of the throttle actuator lever inside the throttle block assemblyThis is normally closed switch, and is held in the open position (contacts are separated (as shown below) by throttle cable tensionThe contacts are open" during normal operation regardless of throttle lever positionIn the event of mechanical problem in the throttle mechanism (cable tension is lost), the switch contacts close, connecting the black wire to ground, which prevents ignition sparkThis is the same as turning the key or engine stop switch "OFF"NOTE: Test the ETC switch at the harness connectorETC will not activate unless there is throttle plate movement off of "zero" detected by the ECUAdjust throttle cable freeplay (ETC switch) and make sure throttle mechanism is functioning properly before testing the switchRefer to Maintenance Chapter for cable adjustment procedurefunctioning properly, the engine will lose spark and stopElectronic Throttle Control (ETC) Switch (Composite Throttle Housing) ETC Switch contacts are closed in fault condition Switch contacts are (throttle cable slack) open during normal operations