oxygen sensor
oxygen sensor
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Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
oxygen sensor
Hi wkbarn and welcome to FTE 
I may be able to email you a wiring diagram for it. If you're just wondering what the different color wires are here is a list.....
The red wires are power for the O2 heaters.....hot when the ignition is on.
On the O2s the Y/LB and R/W are the grounds for the O2 heaters....controlled and grounded through the PCM.
Grey with red stripe is VREF...reference voltage. The PCM sends 5V to each sensor.
The Rd/Bk and Gy/LB are the signals from the O2 to the PCM.
The PCM sends 5V to the O2 and then sees what voltage comes back on the signal wire.
Let me know if you need more info.
I may be able to email you a wiring diagram for it. If you're just wondering what the different color wires are here is a list.....
The red wires are power for the O2 heaters.....hot when the ignition is on.
On the O2s the Y/LB and R/W are the grounds for the O2 heaters....controlled and grounded through the PCM.
Grey with red stripe is VREF...reference voltage. The PCM sends 5V to each sensor.
The Rd/Bk and Gy/LB are the signals from the O2 to the PCM.
The PCM sends 5V to the O2 and then sees what voltage comes back on the signal wire.
Let me know if you need more info.
