2003 polaris magnum 330
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You had one of the early ecm modules that controlled the fan,charging,etc. Look here on your model under "electrical" .Browse Wasn't under the general recall of ecm modules that I'm aware of,but it's still Chinese! Can't remember If I replaced any or not? Huge ATV Recall by Polaris - Sportsman and Scrambler OPT
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The only test on the module was with a tester that Polaris sent when we had the recalls,BUT they wanted it back. Worked in the same way a battery load tester works,it put a load on the ecm and showed if it was good or bad. If you're not charging 14-14.5 volts back to the battery, the ecm module needs to be replaced as this was one of it's primary functions. Plus if you're not sure about the battery,just have it load tested at any auto store. OPT
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