Author [NL] [FR] [ES] [DE] [SE] [IT] Unexpected warning lights this morning  (Read 2192 times)

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  • Offline Peds8045

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    Offline Peds8045

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    • Pedro
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    Unexpected warning lights this morning
    on: Jan 07, 2021, 06.03 pm
    Jan 07, 2021, 06.03 pm
    So, after about 10 days since i last started the bike i thought I’d run it up this morning. It started up ok albeit a slower than normal starter (its been cold) but i then had the TC and Engine light on and they wouldn’t go out..

    I switched it off and charged the battery through the 12v socket. After a day on charge i started it again, the TC light has gone out but the engine management light remains on.

    I intend to have a look at fault codes in the morning, could it have been a low battery causing this, no issues until this? Thanks.

  • Offline Coconut   gb

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    Offline Coconut

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    Re: Unexpected warning lights this morning
    Reply #1 on: Jan 07, 2021, 07.51 pm
    Jan 07, 2021, 07.51 pm
    Whenever something like this happens, check for any fault codes ( DTC's ) at the earliest opportunity.

    If there is an intermittent fault, some DTC's can be erased from the ECU Memory
    after a certain number of "No Fault" starts.

    Take a Photo as a record / proof / reminder of any DTC's that do come up.

    In this case it is possible that the TC Light and MIL light came on
    due to starting with the Main Battery voltage being low.

    The TC light now being OFF means that the TC is working now, so that's Good !  :028:

    Once you have found the DTC that caused the MIL to come on,
    you can look up it's meaning,and the number of "No Fault" starts needed
    before the MIL will be extinguished, and before it will be erased.
    ( Servicing Data, Reference Info. & DTC ( Fault ) Codes ) -
    Scroll down to "Diagnostic Trouble Codes ( DTC's ) / Fault Codes"

    For example, DTC  "P1698" ( 5 Volt Sensor supply circuit malfunction )
    which often appears when the Main Battery is drained,
    will take 3 No Fault starts before the MIL is extinguished,
    and 40 No Fault starts before the DTC is erased from Memory.

    It would also be worth having the Battery professionally tested,
    and consider keeping it hooked up to a Battery Tender, such as "Optimate"
    especially in the colder weather or during prolonged periods of not being used.

    Cheers  :821:


    Last Edit: Jan 07, 2021, 07.54 pm by Coconut

  • Offline Leanover

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    Offline Leanover

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    Re: Unexpected warning lights this morning
    Reply #2 on: Jan 07, 2021, 08.01 pm
    Jan 07, 2021, 08.01 pm
    You could try removing the battery for a few hours ,long enough to reset all information.  When reconnecting,  reconnect let the bike do its clock sweep then remove the negative lead again for a few seconds . Reconnect tighten up and you should be good to go.

  • Offline Peds8045

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    Offline Peds8045

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    Re: Unexpected warning lights this morning
    Reply #3 on: Jan 07, 2021, 08.01 pm
    Jan 07, 2021, 08.01 pm
    Thanks Coconut. I’ll check all that in the morning.
    I do have a battery conditioner but i tend to only switch it on for a full day every now and then. Methinks i may need to leave it on permanently whilst this cold spell is on. Thanks.  :002:

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    Offline Peds8045

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    Re: Unexpected warning lights this morning
    Reply #4 on: Jan 07, 2021, 08.04 pm
    Jan 07, 2021, 08.04 pm
    Leanover, if Coconut’s method doesn’t work, I’ll try your method. Thanks👍👍

  • Offline Peds8045

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    Offline Peds8045

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    Re: Unexpected warning lights this morning
    Reply #5 on: Jan 08, 2021, 11.16 am
    Jan 08, 2021, 11.16 am
    Checked the error code and its P1521 Lost communication with ABS. The ABS light is flashing as it should before riding but the engine management light is still on (steady yellow)
    I have restarted the bike more than three times with no change to the warning lamps.

    I’m thinking it could be that when i ride it and the ABS becomes active, then maybe the engine light will go out. The bike has not been ridden since Christmas eve, due to the bad weather we’ve had.

    Might try the battery disconnect and reconnect next. 👍👍

  • Offline Coconut   gb

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    Offline Coconut

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    Re: Unexpected warning lights this morning
    Reply #6 on: Jan 08, 2021, 02.12 pm
    Jan 08, 2021, 02.12 pm
    That DTC could explain why the TC light was on previously -
    the Traction Control can be disabled if there is a fault with the ABS System.

    The DTC "P1521" ( Lost communication with ABS ) is another
    that could be a result of the low Main Battery voltage.

    Once confirmed that the Battery is fully charged and is in good condition,
    I would try the  Battery disconnection "trick" and after reconnection
    go for a short ride to see if the ABS light goes out.

    If it doesn't, then the Service Manual describes some electrical tests that can be performed :

    Ensure the ABS Modulator wiring connector is secure.

    Test 1 :
    Check the following for Cable and Terminal integrity :
    ECM Pins A33 & A34, ABS Modulator Pins 1 & 17

    If Faulty - Rectify, If OK - Disconnect ECM and proceed to Test 2 :

    Check Cables for short circuit :
    ECM Pin A33 and A34 to Ground

    If Faulty - Rectify, If OK - Disconnect ABS Modulator and proceed to Test 3 :

    Check cable continuity :
    ECM Pin A33 to ABS Modulator Pin 1, and
    ECM Pin A34 to ABS Modulator Pin 17.

    Reconnect ECM and ABS Modulator, Clear Fault Codes
    ( using Dealer equipment or after market DealerTool / TigerTool )
    and start the engine.

    If the fault is still present - contact Triumph Service.

    Hope this helps !  :028:


  • Offline Peds8045

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    Offline Peds8045

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    Re: Unexpected warning lights this morning
    Reply #7 on: Jan 08, 2021, 02.55 pm
    Jan 08, 2021, 02.55 pm
    Thanks to Coconut and Leanover.

    The battery disconnect (for 2 hours) and then reconnect did the trick.  :152:

    After starting it up it took about 30 to 40 secs and then the engine management light went out. So everything is back to normal and the battery conditioner is likely to stay on for the rest of this cold spell.

    Thanks again guys  :020: