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02 Sensor Wire

Mumbo#5

By Mumbo#5,
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Mumbo#5

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Hi all

Last week my oxygen sensor plug fell onto the dump pipe of my exhaust. Now i've had to re-wire the 02 sensor (cut it before the plug cause it was absolutely f**ked) And since then ive been getting 0v :P So I'm more than guessing ive hooked it up the wrong way (scan tool to check voltages)

The pic I have attached is of the 3 wires... One of the wires have like, 2 different wires surrounding the central wire.. anyways ill show u the pic.

please let me know ASAP as my fuel consumption is absolutely herrendous.. lol!

Thanks in advance

(ive tried searching to know availe)

post-22530-1142056593.jpg

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Mumbo#5 Collaborator

Mumbo#5

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does anybody know?

Can I even re-wire them? please help... noob to auto electronics..

EDIT: Ok, ive done a bit more research, it seems there is some sort of shielded ground on one of the wires, what do i do with that?

Also, i noticed that one of the o2 wires is connected to the AAC valve... hmm.. this would cause idle problems im more than guessing...

this is so damn confusing!#%!@#

Edited by Mumbo#5
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BH_SLO32 Proficient

BH_SLO32

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does anybody know?

Can I even re-wire them? please help... noob to auto electronics..

The light blue wire with the white stripe is the power feed for the heater and light brown wire with white stripe is the heater earth wire (pin115). The shielded wire (quote "One of the wires have like, 2 different wires surrounding the central wire.. ") is the ECU signal wire (pin29).

The light blue wire should have about batt voltage when you turn the ignition on.

The light blue wire with white stripe should be connected to one of the white wires and the other white wire connected to the light brown wire with white stripe. It shouldn’t really matter which white wire you use as they both connect to the 2 sides of a resister (according to the wiring diagram). I confirmed continuity and a resistance of about 4 ohms. The heater is used to bring the O2 sensor up to temp quickly which is useful on cold starts. The O2 sensor should work without these 2 wires connected.

The remaining black wire should be connected to the shielded wire as this is signal wire for the ECU. It is important you connect this wire if nothing else.

Hope this helps.

Ben

post-16836-1142067759.jpg

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Mumbo#5 Collaborator

Mumbo#5

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You are awesome! thanks heaps mate..

with the shield ground, i should just strip the shield wire down a bit more and make sure only the copper wire is touching the sensor on the o2 sensor.. my understanding of a shield wire is that it is only grounded at one end, and im guessing its gonna be grounded at the ECU.

ill go try now

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BH_SLO32 Proficient

BH_SLO32

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with the shield ground, i should just strip the shield wire down a bit more and make sure only the copper wire is touching the sensor on the o2 sensor.. my understanding of a shield wire is that it is only grounded at one end, and im guessing its gonna be grounded at the ECU.

ill go try now

Spot on!

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