speedo showing 0 when bike is running - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 5 (permalink) Old 05-02-2013, 01:11 PM Thread Starter
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speedo showing 0 when bike is running

Today about 20 min.ago after winter cleaning all bike,servicing,valve adjusting etc i was on fast section and on back way to home i've notest my speedo is showing me 0 and after wile even light FI was on all the time but engine was pulling well.I come back to home,open pasanger seat cover,move computer unit ,also some other wires from relays and after that light is gone when engine is running(but didn't check that when I'm driving) but speedo still is 0 even when I'm pushing bike fast.
U guys have any idea where is the problem?
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post #2 of 5 (permalink) Old 05-02-2013, 01:20 PM
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Sounds like you set a code, if the FI light stayed on constant for a spell while you were riding. I have no idea about the speedo not showing speed, except I know there is a VSS somewhere. Vehicle Speed Sensor.
Maybe you have a code 11?
Page 5-13 and 5-27 in the manual. That's the U.S. version of the manual.

John, 2000 RC51 #000100

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post #3 of 5 (permalink) Old 05-02-2013, 01:28 PM
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Are your using a speedo-healer unit? If so, try removing it and reconnecting the speed sensor connectors see if that fixes the problem.
If you're not using a speedo-healer, then it may be your speed sensor or wiring/connector issue.
In either case, check speed sensor output using the speed sensor check on P. 9-12.
That will check if your sensor is bad.
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post #4 of 5 (permalink) Old 05-02-2013, 03:04 PM Thread Starter
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I've just check ECU codes by servise plug, was showing me code 9,11,12,13,14,15, and then again 9,11 etc. BUT!- last year my power commander has been disconected during riding and bike just cut off,I fix that problem, but in memory of ECU I think to this day was code from faulty injector(PC disconected),(12,13,14) so 2day i reset ECU and at the moment it showing me OK(light FI ON when i stick wire to servise plug).2morow I will have a ride to switch existing problem code becose engine needs to be running to diagnose what is faulty and then we will see but i have a feeling it's gonna b speed sensor...
Guys ,any way to check is that speed sensor is really reason of that problem??
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post #5 of 5 (permalink) Old 05-02-2013, 04:07 PM
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Black brown to green black with the key on and 3 pin connector plugged in should show battery voltage.

put in neutral connector plugged in measure pink green to green black and spin rear wheel should pulse 0-5 volts.
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