YAMMIE F150 won't trim down

whackywoody · 09 February 2015, 10:16

Hi folks, I have been working in the console area yesterday as I have been fitting a new chartplotter. Anyway the trim down button on the throttle doesn't work but the trim up button on the throttle does work. The trim up and down button also work on the engine itself so I am guessing I have knocked/chafed a wire in the console area or I have a faulty switch on the throttle control. As the boat is 90 miles away I want to make sure I understand as much as I can before I go next weekend please can anybody help with the following:

Does the throttle trim wire (green and white for trim down?) go straight to the engine as part of main wiring loom or does it go to a can bus junction box?

Has anybody got a copy of a wiring diagram I could have please?

Anybody else have any suggestions as to what I might have done?

Thanks in advance for your help

biffer · 09 February 2015, 10:35

You've answered most of your own questions, sound like you've pulled a wire, best way you've pulled a bullet connection apart, worst way is a buggered trim switch, if you can find the bullet connectors coming from the suspect switch, swap the wire over to see if the fault transfers as well, if it does it's the switch if it doesn't it's the wiring

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whackywoody · 09 February 2015, 10:51

Thanks for the suggestion Biff I will try that at the weekend!

flatfootskier · 12 February 2015, 20:22

The older Yam control box has 3 wires leading off the trim switch, terminated in waterproof bullet connectors within a foor of the box. This then plugs into the loom. See if you've just pulled one out.

whackywoody · 14 February 2015, 23:04

Thanks lads, found a pin backed out argggghhhhhhhh but could have been a lot worse!!!