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ecm will not go into service mode


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boat has constant beeping when keyed up. tried to put into service mode to check codes but light wont flash. boat runs very poorly. 2001 sunsetter vlx 350 monsoon. Can anyone help??

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Try disconnecting the other sources of the "beep":

Oil pressure switch

Transmission temp switch

Engine temp switch

I had the same issue a few weeks ago and once I disconnected everything it went into service mode. Luckily I didn't have any trouble codes. Turned out my oil pressure switch was bad and the beep went away with a new switch. Took a while to diagnose since the beep didn't stop with just disconnecting it...

If your engine is running bad, hope you get an easy to fix trouble code :)

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