S/N 0G937923
1999 Merc 200 EFI 2.5L
Screen shot is attached of a diagram of the plug I found unplugged on the port side of the ECM on the bottom corner. I assume it should be plugged in? I couldn't find the answer in a search of forums. Yesterday I ran the boat for the first time this year. Saw this plug was unplugged when I had the cowling off to replace a lower cowel mounted trim switch.
Thank you,
John
It’s just a plug to hook up a diagnostic tool.
1995 Allison XB-2003 225 Super Mag. It's slow and I'm ok with that.
Ok. Thank you.
+2... plug it into the dust cap and you're good to go.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
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