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Ok the 6 amp fuse is for the ecm the 15 amp fuse is for the cluster one of the 20 amp is main power the outher 20 amp should be for the starter and charging circuit .your over heating problem could be in the fan temp sensor you will find it on the left side of the machine on top of the thermostat housing , take and disconnect the plug on it and jumper the two wires togather with key on fan should come on if it does replace fan temp sensor .if not visibly pull each fuse out and look to see if is burnt odds of the fan being bad is very uncommon. This will be all good if is an EFI 800 hope that is helpfull
To try to disconnect the plug of the temperature sensoron the engine block and turn the start. If the fans topped working, then the problem is in the temperature sensor
There are 2 sensors for temperature. One near T stat housing for ECU reading. Other one in water passage for the light. The ECU turns the fan on by tripping the fan relay. The light comes on to tell you it's too hot. Check fan to make sure it turns. Check fan fuse to make sure it's not blown. Unplug fan motor and hot wire it to make sure it runs. If it does, locate fan relay and swap it with one of the others with the same numbers on it to see if fan comes on when engine heats up. If fan cycles normally the temp light sensor is probably bad.
Sounds like your heat sensor is bad most are attached to the radiator in the Cooling fins..to make sure the fans are not the problem..after the engine is warm enough to turn on the fans locate the sensor and unplug it then using a jumper wire "paper clip or any small wire " as a bypass connect the two wires together "the plug end" the turn on the switch..the fans should run as long as the switch is in the on position..if it does your sensor needs replaced...note if you are out where there is no help and the fans are shutting off and the engine is running hot..just bypass the sensor until you can replace it..Just make sure it shuts off with your ignition switch off..or the battery will drain..good luck
ok two reasons here. 1st being the oil temp sensor or wiring to it from fan.test sensor when eng light is on . wire to sensor must be disconnected..ohms test. to grnd on atv. open or closed. now retest when eng is cold same test as b4. open or closed? if different reading assume sensor is ok. check wiring same way. can do wires eng cold btw. should find a relay for the fan on atv also thats part 2. be a small prolly black box near battery compartment (dry location) (up high ) trace wire from fan to relay then to sensor . pretty simple there . same as b4 either open or closed when hot and different when cold is ok if different. as always CHECK FUSES FIRST. CONNECTIONS SECOND. 95 % electrical ......dirty / bad connections.
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