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Discussion Starter #1
So it's stopped raining and being 40 degrees outside so I've taken some time to go through the electricals step by step to try and figure out what is wrong with my bike.
This is a continuation of this thread here: Stranded! bike died. help please.

Summed up, my bike shut off out of the blue while idling and after that when I switched key to ON, the pump would not prime.
So, I found a thread on this forum where someone copy/pasted the service manual's instructions for diagnosing this problem.

The fuel pump works when I jump power to it. Both the fuel cutoff relay and the engine stop relay work when tested. So, according to the service manual, the bank angle sensor is the only piece left to the puzzle. If the bank angle sensor isn't it, the manual has you start testing the ECU wires...

Now, I don't know where the bank angle sensor is, but I found what MUST be it right next to the engine stop relay and the ECM - it is a black box with a flat top and the word "UP" on it with an arrow pointing up and the three wires (green, red, white) going into it.

What's confused me is that I've found threads on the forum from bladeracer and others stating that the bank angle sensor is behind the headlight...??? So that confuses me as this box is under the tank not by the headlight.. could someone clarify this all for me?

Anyways, assuming I've got the bank angle sensor located, the service manual excerpt instructs to simply ensure it is plugged in and vertical and turn key ON - if the relays click, it's doing it's job... well I do this and the relays don't click. Obviously not right. But, this seems a rather unthourough test of if the sensor actually works - mean, if the ground to the sensor is loose, it won't work, and replacing the sensor wouldn't fix that... so, anyways my question is, is there ANY way to bypass it to see if the bike would start if it WAS doing it's job, or any way to actually test the sensor itself for proper operation??

The sensor is ~$90 and a special order item so if I buy it I can't return it if I plug it in and it doesn't solve the problem, so I'd like to be sure it is the issue. But I guess really I need to know if I'm even looking at the right sensor since some are saying it's behind the headlight....

Thanks!
 

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Hi bladeracer is sort of right, the 954 lean angle sensor is in the front fairing, the 929 is under front seat next to engine stop relay and fuel cut off relay.Hope that helps
 

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right to test sensor turn ignition on, with voltmeter put neg lead on to green and pos lead to the white batt volt should be 12v then put pos to red/white and volt should be 0 to 1 volt, turn off ignition undo sensor screws take from mounting. hold horizontal turn on ignition, the engine stop relay on right of lean sensor will click,tilt sensor slowly to left 60deg the stop relay will click. turn off ignition, return to horizontal turn on ignition again and tilt to right . listen for click from engine stop relay again. if it doesnt click it buggered change it.......good luck. Rick..............
 

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Now, I don't know where the bank angle sensor is, but I found what MUST be it right next to the engine stop relay and the ECM - it is a black box with a flat top and the word "UP" on it with an arrow pointing up and the three wires (green, red, white) going into it.

What's confused me is that I've found threads on the forum from bladeracer and others stating that the bank angle sensor is behind the headlight...??? So that confuses me as this box is under the tank not by the headlight.. could someone clarify this all for me?

Anyways, assuming I've got the bank angle sensor located, the service manual excerpt instructs to simply ensure it is plugged in and vertical and turn key ON - if the relays click, it's doing it's job... well I do this and the relays don't click. Obviously not right. But, this seems a rather unthourough test of if the sensor actually works - mean, if the ground to the sensor is loose, it won't work, and replacing the sensor wouldn't fix that... so, anyways my question is, is there ANY way to bypass it to see if the bike would start if it WAS doing it's job, or any way to actually test the sensor itself for proper operation??
929 BAS is under the rear fuel tank support.
954 BAS is mounted on the headlight.
Measure continuity. It should change from vertical to horizontal. If it doesn't then it's not working.
Never bypassed one (I don't recommend doing so) but I think it's the two outer wires you need to connect?
 

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Discussion Starter #5
929 BAS is under the rear fuel tank support.
954 BAS is mounted on the headlight.
Measure continuity. It should change from vertical to horizontal. If it doesn't then it's not working.
Never bypassed one (I don't recommend doing so) but I think it's the two outer wires you need to connect?
ok thanks. I'm going to mess around with it per your and rick's instructions. Will get back to you.

Thanks
-Ryan
 

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Discussion Starter #6 (Edited)
Ok UPDATE:
I tried testing the BAS wires like Rick suggested - positive multimeter lead in the red wire and negative multimeter lead in the green wire, and got no voltage with the bike on. At first I thought this meant the BAS isn't getting voltage BUT, then I thought to try putting the negative multimeter lead on the chassis ground and then, with the key ON, test each of the wires going to the BAS - guess what, all three (red, green, white) have 12 volts on them.
Is this the correct operation? Was Rick wrong that the green should be a green and the red the positive and there should be 12v between them?
Is the ECU or something messed up and sending voltage to the wrong wire or is the wiring right and the BAS must be bad because it's getting voltage from all 3 wires and yet it does not work...

Does anyone have a wiring schematic for this bike??
 

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Did you ever fix this? Seems I have a similar issue - but my F1 20amp fuse in blowing every time I flick the kill switch to the on position
 

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Yep. 20amps is lots of current. 2004 cbr. Bypassed angle sensor, so no issue there. Checked kill switch again, all good. Possibly ecu?
 

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Yep, looked at those. Just disconnected ecu, relay switched, no blown fuse, reconnected ecu, popped the fuse. Fuel primer didn't turn with ecu disconnected however.
 

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It does, but you need the Run position to get them:rolleyes:, just to confirm Green and Red/White jumped at the BAS connector
 

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Yep. Plus, seems to be working, since when swapping relays then switching to on, the fuse didn't blow. I realised the angle sensor was on its side. Put it in the right position, then pop went the fuse. Just read another thread. If the ecu is causing this, I probably wouldn't get anything on my Dash screen.
 

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Would be good to borrow an ecu, but I'm a brit in the west of Hungary, middle of nowhere really. So, having an actual friend here with the same bike would be great, but it's possible there isn't another one in the county :D
 
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