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1998 toyota forerunner oxygen sensor wiring problem

Appx 6 " from the sensor, there is a 2-part plug connecting it to the wiring harness...somehow, the wires were pulled out of the plug, & i do not know the correct way to reattach them, since the color sceme differ differs..

from the sensor itself, the wires are a)blue, b)white, c)black, and d)black..
to the harness, the wires are A)red/white, B)white/blue, C)red, & D)brown...

i do not want to burn out my car's computer trying to find which wires
go where, & the harness display i show does not show this plug, at all..
i cannot take my smog test until this connection is made, so this info would be greatly appreciated at this time..

ie. a>B b>A c>D & d>C thank you bruce

please help me, only, if you know for certain...

Posted by on

  • edwardzesty Dec 13, 2008

    I have a 2000 2wd. same problem. my catalytic converter was ripped out by scrap metal theives and they cut the electrical connector out. I have a call into a local dealership parts manager and was only offered a price on a new wiring harness to the engine plus labor. this adds up to thousands. he told me that the toyota manual does not show which color goes to which. this is crazy i'm thinking. i'm going to call another dealership to test this statement. There are 24 possible wiring configurations. what are the wire sizes on yours? Mine are #10, #18, #16, and #16, I think.

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What code mean po302,,,,po135...p1705


P0302 TOYOTA - Cylinder 2 Misfire Detectedxicon.jpghttp://engine-codes.com/p0302_toyota.htmlForum CodePossible causes- Faulty spark plug 2
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Tech notes The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The Engine Control Module (ECM) monitors how long it take the sensor to warm up and start sending an adequate signal. The code means the the sensor is taking too long to warm up. Replacing the O2 Sensor 1 usually takes care of the problem
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How do you change oxygen sensors on a 2000 hyundai sonata


Locate the two oxygen sensors on either side of the Sonata's catalytic converter on the exhaust manifold. The Sonata's oxygen sensor is gold and shaped liked a spark plug.

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  • Locate the upstream and downstream oxygen sensors under the vehicle near the front axle. The upstream and downstream sensors resemble spark plugs with several wires connected to them. Remove the sensors by turning them clockwise with a 22-millimeter wrench.Locate the wiring harness inside the vehicle under the center console on the front passenger side. Disconnect the electrical connectors for the oxygen sensors. Feed the wires down through the vehicle and pull them out under the car.Feed the wiring assemblies on the new sensors up through the floor of the vehicle. Reconnect the wires in the wiring harness. Screw in the new oxygen sensors with your fingers. Once they are in place, tighten them with a 22-millimeter wrench.Remove the jack stands and lower the Celica to the ground. Remove the tire blocks. There should be a sensor before the CAT converter, and one RIGHT after it.


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    WHERE WOULD I PLACE AN OXYGEN SENSOR THAT PLACE UPSTREAM


    Welcome to FIxYa.com


    The upstream oxygen sensor is typically found on the exhaust manifold that is bolted to the engine block. It may be as far up on the exhaust as the the manifold piping located in the front of the engine under the hood. The sensor looks like a plug sticking out of the exhaust piping and will be the only plug inserted into the exhaust system.

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    leedavidian_19.png



    Thank you for using FixYa.com
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    510d5d9.jpg


    f8b5293.jpg


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