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Oxygen sensor wire to ECU 

 

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 Post subject: Oxygen sensor wire to ECU
Posted: Mon Oct 15, 2007 4:58 pm 
Getting Side Ways
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I'm looking at 21-2-7 wiring diagram for the EF Falcon and I can see HEGO sensor (whcih I think is the oxygen sensor, the H being for heated or something). It's only shows 1 wire running to the ECU - dark green/dark blue wire to pin 35 of the ECU. Can someone confirm that this is the oxygen sensor wire to the ECU please?

 

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Posted: Mon Oct 15, 2007 6:12 pm 
Getting Side Ways
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im pretty sure you are right
there is only 1 to the ECU because the HEGO is a 3 wire Narrowband sensor

1st - 12v
2nd - Ground
3rd - ECU

Most Wideband O2's have more than 3 wires.
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