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This is a 3 wire sensor. Which I think means it is a Hall effect sensor that need 12 volts across two terminal, with the ECU sensing a signal from the 3rd wire. So I think it could be affected by overall electrical circuit of bike. Just took voltage measurements at battery terminals. Engine off battery reads 12.98v. Engine at idle gives 13.57 volts. At any rom above 2,500, I get 15.40 volts.
Just took voltage measurements at battery terminals. Engine off battery reads 12.98v. Engine at idle gives 13.57 volts. At any rpm above 2,500, I get 15.40 volts. So yes, that’s high. But it’s been that way since I got the bike. The first CPS lasted 50,000 miles, the second 40,000 miles, and the third 1,179 miles. So I’m not sure the somewhat high charging voltage is the problem. Thoughts?
Thanks Kev. Yes, I’m thinking why not fix the regulator problem. What’s the go to solution for this?
Thanks Kev. Yes, I’m thinking why not fix the regulator problem. What’s the go to solution for this?And yes, I did check the failed ones. Rather than 680 ohms, I get like 0.7.
If you have an old Simpson 260 or equivalent analog meter you could see the pulses, but with todays digital meters probably not. However if you know any Radio hobbyists with an oscilloscope you could check all kinda stuff. Just curious, did you ohm the bad sensors after failures? Todays electronic components usuall have a pretty broad tolerance on voltages so I would think you'd have to be really out of spec to cook one and it would probably take out something in the ECU ahead of it. Paul B.
Hmmm. So the third wire is just some kind of coaxial, anti-static, anti-interference feature. Ok. Sure enough, the cross-referenced Meat & Doria 87074 says this is an inductive sensor, not Hall effect. Taking the dremel to the sensor unit revealed a magnet with a coil of very thin wires wrapped around it. So I’m now convinced this is a purely passive inductive sensor, which leads me back to wondering why it would fail.