Results 1 to 4 of 4
  1. #1

    2010 Yamaha FX HO Blows 20a Main and Fuel Pump Relay Fuse - Bad ECU?

    My 2010 Yamaha FX HO immediately blows the 20 amp Main and Fuel Pump Relay fuse every time I replace it. The engine cranks over, but it won't start and the dash display is blank. I looked at the schematic in the Yamaha Service Manual and it looks like this 20a fuse feeds the primary DC input to the ECU plus it supplies power to the injectors, coils, and fuel pump. I'm assuming there could be a short on any of these items.

    Any suggestions how I can trace the source of the short?

    Thanks!


  2. #2
    Discovered the bilge pump is also on the 20 amp circuit. Turns out the bilge pump motor was shorted which was blowing the 20 amp fuse. Disconnected the bilge pump and all is well!! Thanks to the service department at Riva Motorsport and Marine in Key Largo FL for this great tip. According to them this happens quite often. Much cheaper fix than a new ECU


  3. #3
    I think the same thing happens to me but ... In my case the bilge just stays on and won't shut of I had to pull the fuse

  4. #4

    Join Date
    Nov 2016
    Location
    SE Iowa
    Posts
    3
    2001 FX140 was blowing 3amp fuse bilge pump was the culprit, how ever still will not start now

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 2010 Yamaha FX HO front-bumper mildew removal
    By blong123 in forum Yamaha How To & FAQs
    Replies: 6
    Last Post: 10-27-2016, 06:53 PM
  2. 2010 Yamaha FX HO Battery / Security Question
    By blong123 in forum Yamaha PWC Performance (4-stroke)
    Replies: 2
    Last Post: 05-08-2014, 05:41 AM
  3. 2010 Yamaha FX HO Battery / Security Question
    By blong123 in forum Yamaha Open Discussion
    Replies: 3
    Last Post: 05-08-2014, 05:40 AM
  4. WTB WTB R&D intake grate and pump seal kit for a 2010 Yamaha FX SHO
    By dso8950 in forum Yamaha Classifieds
    Replies: 2
    Last Post: 10-12-2011, 05:01 PM
  5. WTB Yamaha fx-ho engine and electronics
    By T-DUB in forum Yamaha Classifieds
    Replies: 0
    Last Post: 11-08-2010, 09:01 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •