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  1. #1

    Please help with trim 99 ultra 150

    After a few weeks of messing around with my trim on my 99 ultra 150 I still can't get it to work. I replaced the control module, tested the switch and motor, everything seems to be working but still no movement of the trim cable. When I ouch the switch up or down the control module clicks, when I hold the switch up or down and turn the angle sensor by hand you can hear clicking in the control module again so I assume the angle sensor is working. I even back probed the motor and it works fine. I assume I'm not getting a 12v source into the control module but can't find a wiring diagram for a 99. The only manuals I can find are 03+ models. Any info would be a huge help. I don't get stumped very often but this trim has got me scratching my head for a while now so I figured I'd turn to you guys for help. Thanks


  2. #2
    I believe the trim is controlled by the box bolted to the steering support with the two connectors going to it. Maybe your issue is in that box

  3. #3
    That box is called the trim control module which has already been replaced

  4. #4
    SplishSplash's Avatar
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    Quote Originally Posted by JDB636 View Post
    That box is called the trim control module which has already been replaced
    2 boxes, one is trim control module that the trim cables go to, other is the "electronic control/Trim" , its bolted to the cross member above the gas tank.
    which did you change?

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  6. #5
    Splish that is the one I'm talking about

  7. #6
    I replaced the electronic trim box. I also back probed the trim motor (located inside the box which the trim cable goes to) and it works just fine, I also tested the trim angle sensor and it too works. Still have no clue where to look for the problem. I really need a wireing diagram for a 99 so I can do some more testing. The only FSM I can find online is for 2003+

  8. #7
    SplishSplash's Avatar
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    Quote Originally Posted by JDB636 View Post
    I replaced the electronic trim box. I also back probed the trim motor (located inside the box which the trim cable goes to) and it works just fine, I also tested the trim angle sensor and it too works. Still have no clue where to look for the problem. I really need a wireing diagram for a 99 so I can do some more testing. The only FSM I can find online is for 2003+
    Did you check the 2 circuit breakers? one is for trim.

  9. #8
    SplishSplash's Avatar
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    I scanned the pages out of the 1999 service manual and sent them to you. Included the entire ski wiring diagram.
    Hope you find the issue.

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