check engine light on, no codes stored

Discussion in 'Electrical' started by nascar7613, Nov 23, 2011.

  1. nascar7613

    nascar7613 Active Member

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    2008 Street Glide check engine light comes on for several seconds after starting the bike, then turns off. Intermittently, the light will come on and stay on while riding, then the next time I ride it the light does not come on. I checked for codes with a Daytona twin scan. No current or historic codes. I think that when the check engine light appears it should store a code, but I could be wrong. Any help would be appreciated.
     
  2. glider

    glider Veteran Member

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    Check for codes using this method. Being the light goes out it is a past code, not a current code.

    Harley Davidson Community
     
  3. Hoople

    Hoople Account Removed

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    I agree, you should have a stored code. While trying to pull codes using Glider's link, check to see if you get any "noRsp" messages. You should just see the word "none" or a code for each device on the network.
    Let us know what you find.
     
  4. Jack Klarich

    Jack Klarich Expert Member

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    When using a scanner it may or may not pick up a code until it becomes Historic (HARD) code the link Glider gave you will self diagnose the ecm stored codes:s
     
  5. dangerdan

    dangerdan Junior Member

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    All I can say is WOW. I tried to look thru a manual for a solution and found none. We need a code to diagnose the problem as has already been stated.
    As a rooky I have posted what I might do in this situation. Good luck


    Were speedometer self diagnostics done to check for codes ?

    CHECK ENGINE LAMP
    When the lamp turns off after being illuminated for the first four-second period, it will:
    a. remain off if there are no fault conditions or trouble codes currently detected by the Ignition Control Module.
    b. come back on for an 8-second period if only historic codes exist.
    c. come back on, and remain on, if a current trouble code exists.

    NOTE:
    Some DTCs can only be fully diagnosed during actuation. For
    example, a problem with the ignition coil will be considered a
    current fault even after the problem is corrected, since the ECM
    will not know of its resolution until after the coil is exercised by
    vehicle start sequence. In this manner, there may sometimes
    be a false indication of the current trouble code

    The engine management system provides two levels of diagnostics.
    • The most sophisticated mode employs a computer-based diagnostic package called DIGITAL TECHNICIAN (Part No. HD-44750).
    • The second mode requires using the speedometer self diagnostics. Speedometer, ABS, tachometer (if equipped), TSM/TSSM/HFSM and ECM DTCs can be accessed and cleared

    Diagnostic Tips
    • For a quick check of speedometer function, a "WOW" test can be performed. Press and hold trip odometer reset switch then turn Ignition Switch to IGNITION. Background lighting should illuminate, speedometer needle should sweep its full range of motion, and indicator lamps (sixth
    gear, check engine, low fuel, battery, security, cruise enabled, pursuit, and ABS) should illuminate. Some lamps, like the cruise enabled lamp, may illuminate even if the vehicle is not equipped with cruise control. See Figure 4-8.
    • If speedometer fails "WOW" test, check for battery, ground, ignition, trip odometer reset switch and accessory wiring to speedometer. If any feature in the speedometer is nonfunctional.

    DIAGNOSTICS NOTES
    Each reference number below correlates to a circled number on the flow chart.
    1. To exit diagnostic mode, turn Ignition Switch OFF.
    2. To clear DTCs for the selected module:
    a. Press and hold the trip odometer reset switch for more than 5 seconds to display available modules, release.
    b. Press the trip odometer reset switch to choose module.
    c. Press and hold the trip odometer reset switch for more than 5 seconds to display the DTC, release.
    d. Press and hold the trip odometer reset switch for more than 5 seconds to clear DTC(s) for the module selected.