Have a 2011 polaris sportsman cooling fan dont come on unless i unplug the temp sensor in cylinder head.

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

temp sensor failure
fuses
relay
fan

You can find list for codes on the internet.

PDF]Sportsman 400 H.O. Sportsman 500 H.O. - Polaris

cdn.polarisindustries.com/polaris/.../parts-manuals/9923420r01_lo_res.p...

... parts and acces- sories, available through our online store at www.purepolaris.com. Have ... 2012 SPORTSMAN 400/500 HO Owner's Manual. P/N 9923420 ...

Polaris Sportsman 500 HO Owner's Manual - ManualsLib

www.manualslib.com > ... > Offroad Vehicle > Sportsman 500 H.O.

View and Download Polaris Sportsman 500 HO owner's manual online. PolarisIndustries All-Terrain Vehicles Owner's Manual. Sportsman 500 HO Offroad ...

2011 Sportsman 400/500 Service Manual - Polaris ATV Forum

www.polarisatvforums.com > ... > ATV Repair and Maintenance

Apr 11, 2011 - Indy Red 2011 Sportsman 500 H.O. -Polaris rear rack extender -Ricochet a-arm guards -Polaris fender bag -Koplin hand guards w/mirrors Owners, Service, and Parts Manuals
Sep 14, 2012
2005 Polaris 500 H.O. ATP service manual
Aug 12, 2011
Service manuals
Nov 29, 2010
Service Manual
Sep 23, 2010
More results from www.polarisatvforums.com

2004 Sportsman 700 AWD not working..... - Polaris ATV Forum

www.polarisatvforums.com > ... > ATV Repair and Maintenance
Feb 18, 2013 - Go Back · Polaris ATV Forum > Polaris ATV Technical Discussions > ATV ... AWD wont engage. 2. The instrument / speedo works. 3. The AWD switch is ...Polaris ATV Junkie! .... four wheel drive not working polaris sportsman. Won't go into 4 wheel drive
Feb 1, 2013
4 wheel drive not working
Nov 13, 2011
2004 700, 4WD engages by itself
Oct 28, 2011
4wd is stuck on
Dec 3, 2009
More results from www.polarisatvforums.c

The fan will only run when it needs to. It's on a sensor. The only time mine comes on is if I'm hauling something

51 is a injector on #1 cylinder is stuck open.. will need to check wireing for damage first. 52 is cooling system fan issue.. fan is overload condition or maybe shorted to ground. Will likely have to chase wires to find issue.

I have a 2001 polaris sportsman 500 H.O. I have replaced the fan and the thermial fan switch,and checked the thermostat. Everything is either new or works there are no bubles in the coolant when its running I am running out of opptions . If I unplug the thermal fan switch and plug a jumper wire in the fan will run. I thought the new switch was bad and I tested it and it is good

Check your fuse then trace your wires back from thr fan.you may have a bad ground or broken wire.

As in...? Cold start as in warm weather not being run in a while, or cold weather every time it cools down? Is that fuel injected or carbureted?