2012 Sportsman 550 EPS ECM pins - Polaris ATV Forum
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post #1 of 2 (permalink) Old 09-15-2019, 08:15 PM Thread Starter
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2012 Sportsman 550 EPS ECM pins

Hi, I have a 21012 Polaris Sportsman 550 EPS. Machine has set for a while. Replaced battery and tried to start atv. Wouldn’t start so I started checking connectors, I found that one of the pins on the ECM had turned green and corroded to nothing. Has anyone seen this problem, if so, was there a fix other than replacing ECM and main harness?
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post #2 of 2 (permalink) Old 09-16-2019, 02:06 AM
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That happens when there is current going through a connection and moisture is present. That and galvanic corrosion cause these types of issues in electrical components. You can either buy a new ECM or have yours refurbished. In either event it's a good idea to die-electric grease all your electrical connections going forward.

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