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Old 01-17-2021, 01:41 PM   #31
Sergio
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Default Re: 2003 DS IQ restoration

In an IQ cart with the original Controller, the negative to the speed sensor (black/White wire) comes from the Controller Pin #13.

That is just a plain negative connection and you cut that wire near the 16-pin connector pin#13 and connect it to B-.

You can also just run a new negative wire and splice it near the speed sensor 3-oin connector.

Just to be sure, the correct voltage tests are:
Pack Negative to Speed Sensor Red wire = 15v

Pack Positive to Speed Sensor black/white wire = Pack Voltage.
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Old 01-17-2021, 03:33 PM   #32
sefrlw
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Default Re: 2003 DS IQ restoration

Quote:
Originally Posted by Sergio View Post
In an IQ cart with the original Controller, the negative to the speed sensor (black/White wire) comes from the Controller Pin #13.

That is just a plain negative connection and you cut that wire near the 16-pin connector pin#13 and connect it to B-.

You can also just run a new negative wire and splice it near the speed sensor 3-oin connector.

Just to be sure, the correct voltage tests are:
Pack Negative to Speed Sensor Red wire = 15v

Pack Positive to Speed Sensor black/white wire = Pack Voltage.
So yes I reread what I typed and I messed up typing ever so slightly. Sorry it was confusing.

Pack negative to speed sensor red wire and HAD 15V which is now gone

Pack positive to black and white speed sensor wire I had 0 and it is still 0

I did these tests in run key on and off.

With the 15v now gone I think the controller is not right...
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Old 01-17-2021, 05:48 PM   #33
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Default Re: 2003 DS IQ restoration

The Hall effect speed sensor connects the green wire (has a pull-up resistor to +5v) to the black/white wire in order to drop the signal to 0v.

If the black/white wire is not providing negative, You could not have had the green wire going down to 0v.

Pull all the wires from the speed sensor 3-pin connector to make sure they are making connection.

Also inspect the Controller 16-pin connector, specially Pin #13 (black/white) , pin #14 (green) and pin #15 (red) to make sure they are making contact.

You may also want to test the power at the Controller 16-pin connector itself to verify if the Controller is bad.
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