Tip sensor??? - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 17 (permalink) Old 09-09-2013, 08:16 AM Thread Starter
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Tip sensor???

Need help. The other day I popped a wheelie, after coming down my bike cut off. It was starting while it was leaning, now it won't do nothing but try. I thought it may have flooded somehow, but that's not it. I'm thinking it may be the tip sensor. Any help?

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post #2 of 17 (permalink) Old 09-09-2013, 08:49 AM
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Kill switch?
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post #3 of 17 (permalink) Old 09-09-2013, 09:46 AM Thread Starter
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Kill switch still works, all lights & sounds are functioning.

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post #4 of 17 (permalink) Old 09-09-2013, 09:58 AM
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Check the bank angle sensor. The sensor won't let the fuel pump or the engine run. from a quote elsewhere in the forum...

Quote:
The bank angle sensor is a safety device that kills the fuel pump if the bike is tilted beyond a certain angle. Mainly if the bike falls over.
This will prevent the engine from running and causing harm to rider or engine.

The three main components (discounting fuses) that allow the fuel pump to run are:
1) Bank angle sensor (it's that black object at the front lower part of the rear fender). That allows actuation of...
2) The Bank Angle Sensor Relay. When actuated by the BAS allows power to...
3) The Fuel Cutout Relay. That then powers the fuel pump.

You may have actuation of the BAS relay but no actuation of the fuel cutout relay.
You can remove the relay and use a meter to measure continuity across the contacts using some jumper leads to energize the relay coils.

For the Bank Angle Sensor:
The relay coil is: Red/Orange and Black
The contacts are: Red/White and Black/White

For the Fuel Cutout Relay:
The relay coil is: Black/White and Brown/Black
The contacts are: Brown and Black/White
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post #5 of 17 (permalink) Old 09-09-2013, 04:15 PM
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MOVED to "RC51 Tech Talk"...
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post #6 of 17 (permalink) Old 09-09-2013, 04:22 PM
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Mike has a good point there, if it's your bank angle sensor, or the related relays, you won't hear the fuel pump prime when you turn the key on.
You didn't say specifically if you hear the fuel pump...

Could also be your switch at the kickstand.

If you want to try swapping relays, the headlight relay located in the inside left front fairing is the same as the bank angle relay and the fuel cut-out relay.

John, 2000 RC51 #000100

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post #7 of 17 (permalink) Old 09-09-2013, 04:55 PM Thread Starter
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Fuel pump relay is coming on. Everything is making the right sounds, just not starting. I'm going to check and see if something came loose.
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post #8 of 17 (permalink) Old 09-09-2013, 05:37 PM Thread Starter
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just finished checking all the fuses everything is good it just won't start up

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post #9 of 17 (permalink) Old 09-09-2013, 05:43 PM
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Did you try bump starting it?

I dunno, just a guess - maybe the starter is locked up or dead.
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post #10 of 17 (permalink) Old 09-09-2013, 05:45 PM Thread Starter
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It started a few times, but would die out when I sat it up-right

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