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2004 sportsman 500 charging issue

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  #11  
Old 03-23-2016, 03:42 PM
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Originally Posted by old polaris tech
You're probably confusing the CDI with an ECM module that takes the place of a regulator/rectifier on some of the 2004 models. Look at the link that Yooper265 posted on a regulator. If you have the regulator equipped model,it will be located down close to the radiator. Most of the time it's a regulator problem on charging,not stators.Plus connectors are bad on these regulators about coming loose from vibration.
After looking again every thing makes sense. It's the ecm model. Your right opt I was confusing the Cdi with the regulator. TI me to call the dealer about recall.
 
Attached Thumbnails 2004 sportsman 500 charging issue-20160323_162644.jpg   2004 sportsman 500 charging issue-20160323_162700.jpg  
  #12  
Old 03-23-2016, 03:56 PM
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You have the UPDATED ecm module already in place of the Black finned Chinese ecm,but these can fail also. I've replaced several of these silver Sure Power modules on the same atvs..Same as several members have had to do. Won't help calling the dealer on this as it's out of your pocket now. They only allowed a one time replacement. I've only been able to have a second one warrantied only because it failed within a 3 month period and I talked to Polaris about it. Sucks I know.. You might try to, clean up the connector and use some niogel grease to see if that helps.. This module contains the main circuit breakers,battery protection circuit,fan control along with controlling charging.Too many functions imo..
 
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Old 03-23-2016, 03:59 PM
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Well that's good to know, sucks it won't be covered. Time to start double checking grounds and connections. Also going to test the 3 stator wires again to double check.
 
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Old 03-23-2016, 06:03 PM
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Well apparently I didn't read my multimeter right the first time I checked the stator. I got .7 ohm with all three combos on the yellow wires. Thing still won't even pull start or run without hooked to my KQ I even swapped in the battery from my kq and still only shows 12ish volts. I checked and cleaned all the grounds and connections everything appears fine. Should I tell my buddy to go ahead and bite the bullet and order a new ecm?
 
  #15  
Old 03-23-2016, 07:39 PM
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If it just shows battery voltage when running,then yes sounds like a new ecm is needed.
 
  #16  
Old 03-23-2016, 07:45 PM
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The display shows every thing on it, gas lever, rpms, ect.
 
  #17  
Old 03-24-2016, 01:09 AM
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Best to check voltage directly at the battery rather than relying only on the display. If it just shows 12 volts with engine running at an idle,then I'd say another ecm has bit the dust. Here's one from one member of the forum that got hot and melted.
 
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  #18  
Old 03-24-2016, 07:55 AM
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That's what I've been doing, checking directly at the battery, looks like we will try a new ecm, thanks for the help! I'll update when we swap it out.
 
  #19  
Old 04-03-2016, 09:38 PM
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New ecm installed and charging great! Thanks for the advice everyone!
 
  #20  
Old 04-04-2016, 07:38 AM
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Another ecm bit the dust..
 
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