Tobor1 39 Posted August 24, 2021 (edited) Hello folks , New here and new to the ATV world, Daughter bought a 21 Rubicon so i grabbed a 09 rancher (simply because i don't have RN money) so worked for 3 weeks hit the mud because i didn't have a choice on Sunday night ,15 min later Bike stopped dead lights are out as in none at all and will not engage shift motor, when key is turned on it immediately blows main fuse 1 30 amp. New Battery today , Starts great But blowing fuse main 1 , Any starting point i should be looking? Thank You Edited August 25, 2021 by Tobor1 Share this post Link to post Share on other sites
Goober 1,549 Posted August 25, 2021 You have the service manual? If not, try to get one. no idea what’s causing it—maybe muddy connectors? 1 Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 I pulled apart many today blew out electrical cleaner and dielectric grease ,not all but ill start taking off plastic tomorrow i read there is one by front shock i cant et at and wiring harness. Share this post Link to post Share on other sites
Melatv 763 Posted August 25, 2021 Hi: Remove the Fan fuse and try the 30 amp fuse again Big welcome Here 2 Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 i will for sure in the am thank you Share this post Link to post Share on other sites
jeepwm69 6,877 Posted August 25, 2021 I have an 09FA and MelATV has been huge in troubleshooting the electrical gremlins 1 Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 tried it still blew Share this post Link to post Share on other sites
_Wilson_™ 6,033 Posted August 25, 2021 (edited) I'll ask this because it does happen.... there is no rodent damage on this bike (wires chewed up) ? welcome to the forums. Edited August 25, 2021 by _Wilson_™ Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 Not that I have seen. It has to be a water / mud issue. It did sit for 3 years but that’s basically all the history I have . No. Sleeping tonight I guess. Got it in my head now. Lol. 1 1 Share this post Link to post Share on other sites
_Wilson_™ 6,033 Posted August 25, 2021 okay thank you, i wouldn't worry too much i have yet to see an issue these guys couldn't figure out :) just takes time, and you have come to the right place. 1 Share this post Link to post Share on other sites
_Wilson_™ 6,033 Posted August 25, 2021 10 hours ago, Tobor1 said: 15 min later Bike stopped dead lights are out as in none at all and will not engage shift motor, you say stopped dead ? the engine shut down too ? 10 hours ago, Tobor1 said: Starts great But blowing fuse main 1 but now it starts and keeps blowing that fuse ? Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 Yes it did . Just died. Stopped dead 1 Share this post Link to post Share on other sites
_Wilson_™ 6,033 Posted August 25, 2021 thank you! . if it starts now, might could run water over just certain areas (one at at time) of the bike till it shuts off again, to help narrow this down. was this a deep plunge you went into ? Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 Battery was toast. No amps. New one installed. Started right away. Did with my booster pack also. 1 2 Share this post Link to post Share on other sites
_Wilson_™ 6,033 Posted August 25, 2021 does the new battery hold a charge now, and that fuse only blows when you fire the bike up ? OR, blows when you try shifting it, or using the lights etc ? Share this post Link to post Share on other sites
jeepwm69 6,877 Posted August 25, 2021 These newer EFI machines MUST have a good battery or they will throw all kinds of problems at you. So is it no longer blowing the fuse? 1 Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 (edited) the battery has been in all night . . It's still starting bike and fully chared .the fuse blows as soon as key is in on position before i start bike.. im assumin the main 1 30 amp fuse controls headlights shift motor ect . bike still starts and i can manually put it in gear . Edited August 25, 2021 by Tobor1 1 Share this post Link to post Share on other sites
Melatv 763 Posted August 25, 2021 Hi: Unplug the shift motor and try again. 1 Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 (edited) just tried same fuse blew Edited August 25, 2021 by Tobor1 Share this post Link to post Share on other sites
Melatv 763 Posted August 25, 2021 Hi: This is a 2009 TRX420 FPA? blowing the main fuse 1 ?? -- Looking at the electrical print it show the Main 2 fuse feeding the lights. 1 Share this post Link to post Share on other sites
Tobor1 39 Posted August 25, 2021 its this fuse , with that being said headlights and to power to shift motor are my main issues with the blowing fuse . it may be entirely possible lights are a completely separate issue , Share this post Link to post Share on other sites
Melatv 763 Posted August 26, 2021 Okay-- Unplug the 5 pin connector on the PCM -- located behind the battery -- try again -- leave the two 33 pin connectors in place 2 1 Share this post Link to post Share on other sites
Tobor1 39 Posted August 26, 2021 i will in the morning thank you for your time and advice we appreciate it Share this post Link to post Share on other sites
toodeep 1,725 Posted August 26, 2021 2 quick things I would try is the fuel pump relay and the regulator/rectifier. Just unplug them and see if the fuse blows still. I've also had issues with the bank angle sensor where it would blow the fuse. You didn't by chance get a voltage reading at the battery while it was running? A bad voltage regulator can put out 18+ volts to cause issues. I'm just guessing the other battery went bad while riding it and that is why I ask on that one. 2 1 Share this post Link to post Share on other sites
