Accidental Short
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Thread: Accidental Short

  1. #1
    Member Slay's Avatar
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    Default Accidental Short

    I was working on my 2018 Boss and accidentally created a short by touching the positive and negative battery terminals together. Now the “check” error displays and no error code displays with the paper clip trick. I think I may have ruined the ECU and possibly my TRE but I’m not sure. Any ideas or way to test the ECU and TRE?
    -The bike starts and sound ok, “check” remains, but no FI light
    -Fuses near battery tested good

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  3. #2
    Very Active Member Bering_C_Sparky's Avatar
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    Quote Originally Posted by Slay View Post
    I was working on my 2018 Boss and accidentally created a short by touching the positive and negative battery terminals together. Now the “check” error displays and no error code displays with the paper clip trick. I think I may have ruined the ECU and possibly my TRE but I’m not sure. Any ideas or way to test the ECU and TRE?
    -The bike starts and sound ok, “check” remains, but no FI light
    -Fuses near battery tested good

    I did not get the part about the bike starts and runs in your PM.
    Doubt you have ruined your ECU if your bike is running.
    And why would you think you ruined your TRE.....(Just curious as to your though process)
    Have you tried disconnecting the battery and then reconnecting it again to see if the Check indication resets?

    BCS

  4. #3
    Member Slay's Avatar
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    I did not get the part about the bike starts and runs in your PM.
    Doubt you have ruined your ECU if your bike is running.
    And why would you think you ruined your TRE.....(Just curious as to your though process)
    Have you tried disconnecting the battery and then reconnecting it again to see if the Check indication resets?

    BCS[/QUOTE]

    Maybe it’s a good sign that the problem isn’t as large as the ECU if the bike still runs. I thought it might be the ECU due to a code not displaying with the paper clip trick or the TRE that might not have an error code. The TRE was connected directly to the battery but doesn’t have an in-line fuse, which is why I think it may be the issue: I’m thinking that maybe I should take off the TRE and rewire back to stock to see if thats the case. I’ve tried unplugging the battery, but “check” still continues to display. Maybe there’s a hard code that won’t reset with the battery unplug trick? I’d hate to take it into the shop, but maybe I save myself the trouble and take it in?

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  6. #4
    Very Active Member Bering_C_Sparky's Avatar
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    I can see why you might think the TRE is would bad then.
    I am sure you now realize this but you should never connect anything to a battery that is not properly fused for the load.
    Connecting even something as innocent looking as TRE to the battery unfused has the potential to burn your entire bike to the ground.

    So far what I have seen in the manual regarding the check indication states that there will be no code displayed when the check indication if present.
    And all the trouble shooting says is....

    “CHEC”: The LCD panel indicates “CHEC” when no communication signal from the ECM is received for 3
    seconds.
    For Example
    : The ignition switch is turned ON, and the engine stop switch is turned OFF. In this case, the speedometer
    does not receive any signal from ECM, and the panel indicates “CHEC”.
    If CHEC is indicated, the LCD does not indicate the trouble code. It is necessary to check the wiring
    harness between ECM and speedometer couplers.
    The possible cause of this indication is as follows;
    Engine stop switch is in OFF position. Side-stand/ignition inter-lock system is not working. Ignition
    fuse is burnt.

    But your bike runs so that would indicate that none of the start prevention circuitry is faulty.........but electronics can be puzzling as times.

    If I come across anything helpful I will be sure to post back.

    BCS
    Last edited by Bering_C_Sparky; 05-07-2019 at 09:47 AM.

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    Member Slay's Avatar
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    Lesson learned. Thank you for the information, this should help with my troubleshooting. I’ll keep working to solve the problem before I ride and post back when I figure it out.

  8. #6
    Member Slay's Avatar
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    Fixed (late update). Removed XTRE and wired back to stock. Had ECU checked at a shop and it tested good. New XTRE on the way. I’ll be adding a fuse this time...

  9. #7
    Radio Active Member rynosback's Avatar
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    Quote Originally Posted by Bering_C_Sparky View Post
    I can see why you might think the TRE is would bad then.
    I am sure you now realize this but you should never connect anything to a battery that is not properly fused for the load.
    Connecting even something as innocent looking as TRE to the battery unfused has the potential to burn your entire bike to the ground.

    So far what I have seen in the manual regarding the check indication states that there will be no code displayed when the check indication if present.
    And all the trouble shooting says is....



    But your bike runs so that would indicate that none of the start prevention circuitry is faulty.........but electronics can be puzzling as times.

    If I come across anything helpful I will be sure to post back.

    BCS
    I agree completely! Every circuit should have a fuse and a properly sized fuse based on the wires used and the draw of the component.

    Quote Originally Posted by Slay View Post
    Fixed (late update). Removed XTRE and wired back to stock. Had ECU checked at a shop and it tested good. New XTRE on the way. I’ll be adding a fuse this time...
    Glad that you have it up and running correctly. I believe a 5amp fuse is needed for your XTRE, but check the installation directions. If you have added several aftermarket items, you may want to install a fuse block. This way you have all of your fuses in one place and it does not make the battery look like a spaghetti factory.
    Bang for the Buck Mods link CLICK HERE
    Coming to a city near you..

  10. #8
    Very Active Member Bering_C_Sparky's Avatar
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    Quote Originally Posted by Slay View Post
    Fixed (late update). Removed XTRE and wired back to stock. Had ECU checked at a shop and it tested good. New XTRE on the way. I’ll be adding a fuse this time...
    Glad you got it fixed.
    But honestly you could get the ignition timing maps and STP maps corrected directly in the ECU (+ a whole lot more) and not have any add on devices on the bike at all.
    And it would have been cheaper than what you have now paid for 2 X-TRE's.

    BCS

  11. #9
    Very Active Member cbxer55's Avatar
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    Cool

    Seeing as how he has only five posts since 2016 (four of those are in this very thread), I doubt he spends much time here. Likely doesn't even know what ecu flashing is, and what it does.
    SILVER 2006 M109R.
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  12. #10
    Member Slay's Avatar
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    Quote Originally Posted by cbxer55 View Post
    Seeing as how he has only five posts since 2016 (four of those are in this very thread), I doubt he spends much time here. Likely doesn't even know what ecu flashing is, and what it does.
    I see BCS is the man when it comes to ECU flashing. I’ve read about ECU flashing before, but I’m slowly upgrading my bike and haven’t added exhaust or air yet. Maybe it’s something I try in the future.

  13. #11
    Member alx109's Avatar
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    Default SHOUT OUT TO BCS

    Im lucky to live 1hr away from BCS and was able to meet him personally a few months ago he took time out of his day to flash my ECU and show me his bike. My bike has never been so fun to ride feels like it should strong. I definitely recommend him he knows what he's talking about and what he's doing he won't tell you something unless he has knowledge about the subject. Flash is definitely the way to go no extra wiring and the tune is according to you're accessories . Cant wait till the MAN BCS gets his dyne up and running so I can take my 9 up there to see what else he can come up with.

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