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Probing the O2 plug
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toytech01 Offline
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Probing the O2 plug
I have a 95 VW Jetta 2.0 gas motor. I am trying to hook up an EFIE to a 4 wire O2 sensor. When I turn on the key and probe the plug, I get .03v-0v-.16v-.61v None show 12v and only one apears to be ground. I could not find any schematics for this car. Any ideas?
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06-10-2008 10:06 AM
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mike Offline
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RE: Probing the O2 plug
With the sensor plugged in, you'll need to probe the wires with the engine running. I assume you are measuring between the wire and a good ground? Then you'll see the signal wire fluctuating between .3 and .7 volts or so, constantly changing. That's the signal wire

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06-10-2008 10:22 AM
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toytech01 Offline
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RE: Probing the O2 plug
Found it, thanks Mike. Now to try and hook it up.....


mike Wrote:With the sensor plugged in, you'll need to probe the wires with the engine running. I assume you are measuring between the wire and a good ground? Then you'll see the signal wire fluctuating between .3 and .7 volts or so, constantly changing. That's the signal wire
06-10-2008 11:11 AM
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