Merc trim switch

rasburyrasbury Member Posts: 8,782 ✭✭✭✭✭
in Electrical Discussions
My up trim I don't think k ever worked that I recall unless you push into the trailer feature of the switch- so I can assume it is probably not wiring related and is the switch in the handle? Path for trouble shooting?
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Comments

  • IanIan Member Posts: 2,998 ✭✭✭✭
    Open it up and up and put a meter over the contacts. If down works you should see a closed circuit when pressed, should see the same for up. If not, bad switch; if it’s good then time to go wire or connector chasing. 

    Regards,

    Ian

    The Third “B”

    Ravena Coeymans Yacht Club

    https://www.rcyachtclub.com/

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  • YYZRCYYZRC Member Posts: 5,363 ✭✭✭✭✭
    Which binnacle do you have @rasbury. I might have a set of switches for you. 
    2008 350 EC on Georgian Bay
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  • davidbrooksdavidbrooks Member Posts: 1,416 ✭✭✭✭
    Pull the plastic cover off the throttle and pull the wiring up. Where all the wires connect comes loose. I actually put two zip ties on mine. I was experiencing the same thing two years ago.
    It's 5 O'Clock Somewhere!
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  • PickleRickPickleRick Member Posts: 4,243 ✭✭✭✭✭
    edited August 2021
    You can also pull the covers over the sensor/limiter and check for corrosion.   

    Make sure you mark the covers before removing them. 


    If not damaged they can be cleaned and apply some electrical grease  before reinstall. 


    I usually find brittle wires going from trim senders to transom shield. 

    There are abullet connectors in and around engine/trim pump that can come disconnected. 
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  • rasburyrasbury Member Posts: 8,782 ✭✭✭✭✭
    Thanks.  I have it home a d will see if she will start...been a while...
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  • J3ffJ3ff Member Posts: 4,180 ✭✭✭✭✭
    edited August 2021
    Mine also does this and has from day 1, then again neither has the trim gauge.   Funny thing is that's pretty much status quo on all the I/O's I've ever driven
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  • rasburyrasbury Member Posts: 8,782 ✭✭✭✭✭
    ah...did not think of that...I did replace the trim senders when I pull the motor and out drive but the gauge never has worked right so I bet your right! And it did start right up, genny as well but no water from the genny so either lost the coupler or the impeller...but that is a genny problem I can deal with.

    Thanks @Alswagg

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  • rasburyrasbury Member Posts: 8,782 ✭✭✭✭✭
    I will take a look, thanks @Alswagg

    I always adjust the trim by ear, never pay much attention to gauges anyway...but it would be nice to have them work. I bought some new trim sending units off ebay....never could really get them to work proper but it was not a priority either. Only concern I would have is when I get real shallow and have to trim up, don't want to burn up the water pump impeller....will check it out, thanks!
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