Ulysses engine temp sensor

Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by gdsob, Aug 17, 2013.

  1. Florida Lime

    Florida Lime Long timer

    Joined:
    Sep 5, 2008
    Oddometer:
    2,557
    Location:
    As stated, and as often as possible -R'ville, N.C.
    My 2007 was also affected the same way. Etennuly found that putting in the manual switch to the fan stopped the skip-spark type running. I did the same mod to mine, and finally put an end to all the endless "try this" scenarios. Believe me, I tried all the suggestions at the time.
    It was finally back to running great, right up until I found that I also had one of the 2007s with the bad cranks (43,000 miles - RIP). :cry
    #21
  2. 4-stroke

    4-stroke Adventurer

    Joined:
    Sep 5, 2006
    Oddometer:
    38
    Location:
    Pasadena California
    I don't know about earlier bikes, but my 08 XT fan gets it ground from pins 2 & 3 of the ECM J2 connector. I didn't like this current load going through the ECM so I added a relay that switches ground for the fan operation from a lug on the bike frame. The ECM just has to command the relay!

    4-Stroke
    #22
  3. gdsob

    gdsob Adventurer

    Joined:
    Feb 21, 2009
    Oddometer:
    25
    Location:
    SW Ohio
    Had codes 11 and 16. Sensors checked out ok. Re-did grounds. Not sure why the Tps code, didn't have one before, it might be from the reset I did.

    Hopefully i have time for a test ride tomorrow, got three kids with opening day soccer. Freaking Cincinnati, opening day anything is cause for a parade.
    #23
  4. Hughlysses

    Hughlysses Long timer

    Joined:
    Jun 2, 2004
    Oddometer:
    3,503
    Location:
    Summerville, SC
    Any verdict on the attempted fix?
    #24
  5. gdsob

    gdsob Adventurer

    Joined:
    Feb 21, 2009
    Oddometer:
    25
    Location:
    SW Ohio
    Hugh, thanks for asking.

    Haven't solved it yet. I got excited when i thought the temp sensor was open, but I was measuring the wrong pin on the connector. No obvious problems yet.

    Was all set to order a diagnostic plug for the ECMspy, when my credit card got hacked. So there goes another week. Not too broken up about that since it's the hottest week of the year and I wouldn't be riding much anyway. Went dirt biking with my 9 yo last weekend and that helped scratch the itch.

    I think once I can see the status of all the sensors and inputs, it should tell what is really happening. I also have a few 12v relays around to reduce the fan current from the ecm as suggested.
    #25