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Steve Bull

Speed sensor

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Trying to get my xtreme to register vehicle speed. The gearbox sensor is a two wire that produces an AC current which i dont think the ecu can read. Well it doesn't seem to regardless of pullup or rising/falling.

Next tried a hall effect 3 wire which switches the 12v supply to 0.5v signal. Again this doesn't seem to work, or the ecu is recognising it. Does the voltage have to be a lot higher for the ECU to see it. 

 

What the best solution

 

Thanks

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Switching point on the Di inputs is 1.5V so as long as either sensor is switching above and then below 1.5V it should pick the signal up.

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Thanks ill look for a different way to do it. Saying that though instructions for the VSS were all in Chinese. A  Google  and the black wire isn't the earth but the load. While the blue, normally the signal, is the earth so it may work once rewired.

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