Question about 2003 Harley Davidson FLSTC Heritage Classic

2 Answers

Fuel Pump(EFI)and lights non-functional, ignition o.k.

All fuses I know of are o.k.-bike will fire on starter fluid. Trouble started with a dead battery, but when I recharged, a series of flashes appeared on the panel light-happened only once. Did I accidentally activate some sort of anti-theft circuitry?

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  • lecturn_2000 Dec 11, 2008

    O.K., sorry about the brief description. Basically, after I let the bike's battery run down and tried to restart, I noticed a series of light flashes on the console. HD is equipped with an anti-theft device which disables the electronic fuel pump-I think the flashes were an error code indicating the ECM had lost a code or disabled the circuitry which controls the pump. (I did recharge the battery after trying to start with a low charge. The starter turns the engine over just fine, BUT the fuel pump does not operate-no sound, as is customary, and no gas on the plugs. The problem is not ignition related, as the bike starts and runs for a couple of seconds on starter fluid. So...if this is a correct analysis of the problem, I need to restore that ECM to its former state. I had hoped that simply recharging the battery would do the trick, but no luck. Harley dealerships have a gizmo they call a "Scanalyzer" which would probably tell someone in a minute if a "run" code needs to be restored, but, of course, I need to get the bike to a dealer for this one. I'm confident the problem is not mechanical- the bike ran flawlessly prior to sitting for a month or more w.o. being started. Trying to start with a low battery was not a good idea, I'd have to say. I do have a list of the error codes and a method of disabling the ECM (obtained from another site), but your input would most certainly be welcome. Thanks in advance,
    Dave


  • Ifixitall Mar 14, 2009

    No power to fuel pump after sitting for a few months and tried to start with no/low fuel.  Ran for a few seconds (rough) and then nothing.  Cranks fine.  Battery was disconnected and charged.  Battery is good, all fuses good.  Traced power everywhere with the schematic.  All is good except power to fuel pump fuse which comes from the System relay.  Removed relay and verify it works fine.  ECM was disconnected as part of tracing the voltage.  Not sure if I need to somehow rest the ECM.  Used key FOB to set/unset the security system.  I'm thinking the ECM has disabled the fuel pump.  Pretty sure that might be the problem.  Anyone able to confirm this and how to re-enable the fuel pump circuitry.  Not really addressed in the owners manual or service manual.

  • Toyota Ed May 11, 2010

    I have sent your request to Benimur and Rselvy. One of those two can help you out.

  • Toyota Ed May 11, 2010

    Contact expert Rselvy for a good solution, he is great on motorcyles.

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They do have the scanalyzer and it also has the ability of resetting your ECM back to operating condition. By default there is a tamper device in the ignition that will disable the bike. To my knowledge you must take it to a dealer to have the computer reset. The reason being is if you could DIY then there would be no reason to have the anti - theft device. Sorry for the bad news but you are right on target with whaat is wrong. Now for a work around in the meantime, perhaps you can buy a electric fuel pump and hard wire it from your battery, bypass the factory electronic one and use the new one until you can get the bike to the shop for the quick fix. It only takes them a few minutes to fix it. I would take your registration and proof of ownership because they are mandated by law to verify you are the owner. At least where I live they must do it.
Good luck!
RSelvy

Posted on Dec 12, 2008

  • Rob Selvy
    Rob Selvy Dec 12, 2008

    I sent this gentleman an answer last night. Let me know if this helped him or if he needs further assistance.
    Thanks,
    RSelvy


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Hi and welcome to FixYa,

Appreciate the headsup Toyota ED. I had a discussion with an HD rider/shop owner here in my country and with your indulgence, may I share his thoughts and my inputs:

  • if it were alarm induced power shutdown to the fuel pump, most likely the starter button will also not work (depends on the model/version/region of intended use);
  • there was a TSB (Technical Service Bulletin) for the upgrade of the fuel pump. The updates would have a letter "A" after the part number;
  • there is a feature called "Storage Mode" involving the use of signal light switches and the key FOB. It might have been inadvertently activated;
  • if it were an alarm induced problem, there would be no spark and would be audible;
  • often found issue with similar symptoms is a corroded fuel pump relay or its terminals/connectors. Might as well clean the entire fuse/relay box and apply electrical grease.
And agree with TE that Rselvy would be in a better position to be of more information.

Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 12, 2008

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Posted on Jan 02, 2017

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SOURCE: Fuel Pump(EFI)and lights non-functional, ignition o.k.

Check your relay for the fuel pump, make sure you are getting power to fuel pump connector (outside of tank). Check for fuel flow when pump is on, ( remove tank to fuel rail line from intake side)be carefull this results in a good fuel stream that may go everywhere. Oh yeah and no smoking. Hope this heps as it sounds like the pump is not getting poweror you have a blockage somewhere.

JP

Posted on Aug 16, 2009

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