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Posted on Aug 06, 2008

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...

  • 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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5 Related Answers

Anonymous

  • 1959 Answers
  • Posted on Apr 17, 2009

SOURCE: 1998 toyota ipsum car stereo wiring

Clck here for the correct wire colors for Toyota. http://www.autotoys.com/New_Tech/Wire_codes/TOYOTA_WIRE_COLORS/toyota_wire_colors.htm

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emissionwiz

Marvin

  • 85242 Answers
  • Posted on May 12, 2009

SOURCE: I'm having trouble installing a radio in my 1992 toyota celica

go to any auto parts store and ask for a 12 volt test light, it has a bulb inside and a pointed end like an ice pick, u attach one end to a good ground and then probe wires for power, when u have a hot wire with 12 volts the light in the handle will shine on. They cost about $6.00 at Kragen I think.

Anonymous

  • 24 Answers
  • Posted on Mar 13, 2010

SOURCE: I am trying to replace the factory stereo of my

you need a harness adapter you find it at your local auto parts store

Anonymous

  • 107 Answers
  • Posted on May 21, 2010

SOURCE: I have a reese brakeman compact trailer brake,

the best thing to do is get a 12 volt lite tester the one with the pointie end. cut your harness turn on left turn signel. with tester lite grounded tuch the ends of the cut wire from truck strip a small piece of wire covering and attach to your trailor harness when left signal works on the trailor do the right blinker the same way as for running lites turn on your park lites and see witch two wires are lit connect to trailor making shure lites are dim last wire are for brake lites now you well know where to connect to new harness good luck cj

duane_wong

Duane Wong

  • 6826 Answers
  • Posted on Dec 18, 2010

SOURCE: OK SO I HAVE A

What codes are you getting?

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3helpful
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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
- Faulty ignition coil 2
- Ignition coil 2 harness is open or shorted
- Ignition coil 2 poor electrical connection
- Clogged or faulty fuel injector 2
- Injector 2 harness is open or shorted
- Injector 2 poor electrical connection
- Improper spark plug 2
- Insufficient cylinder 2 compression
- Incorrect fuel pressure
- Intake air leak
P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1xicon.jpghttp://engine-codes.com/p0135.htmlForum CodePossible causes- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
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
P1705 TOYOTA - Direct Clutch Speed Sensor Circuit Fault.
This is related to the sensor that gives info about the slippage rate o fthe transmisssion to the Transmission Control Module..
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Oxygen sensor broken wire

The main issue is the heat from the exhaust system. What ever wire you use needs to be insulated with some silicone heat tubing.
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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.

  • 2 Remove the Sonata's wiring harness from the end of the two oxygen sensors using your fingers. Do not damage the end of Sonata's wiring harness.
  • 3 Remove the two oxygen sensors from the Sonata's manifold using the oxygen sensor wrench.
  • 4 Apply the anti-seize compound to the threads of the Sonata's two new oxygen sensors.
  • 5 Install the two new oxygen sensors to the Sonata's manifold using the oxygen sensor wrench. Re-attach the wiring harness to the two new oxygen sensors using your fingers.
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    Where does a oxygen sensor go on a toyota celica 2000 ?

  • 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.

    Important:

    Removal of the oxygen sensor is easier when the engine temperature is above 48CC

    (120T).

    ' Handle the oxygen sensors carefully in order to prevent damage to the component.

    Keep the electrical connector and the louvered end free of contaminants. Do not use

    cleaning solvents on the sensor. Do not drop or mishandle the sensor.

    REMOVAL

    Numbers in ten in parenthesis correspond to numbered components in image.

    1. Raise and support the vehicle.

    2. Disconnect the sensor harness connector.

    3. Remove the oxygen sensor.

    Bank 1 Sensor 2(1)

    Bank 1 Sensor 1(2)

    A Bank2Sensorl(3)

    A Bank2Sensor2(4)

    INSTALLATION

    Important: A special anti-seize compound is used on the oxygen sensot threads. The new

    service sensors should have the compound already applied to the threads. Coat the

    threads of a reused sensor with anti-seize compound P.N 5613695 or the equivalent.

    1. Install the oxygen sensor.

    Bank 1 Sensor 2(1)

    A Bank sensor (2)

    A Bank2Sensorl (3)

    A Bank2Sensor2 (4)

    Important: Make sure that all of the harness retaining clips are intact. The harness

    must not contact any of the hot exhaust components. The HO2S pigtail has white

    tape at the intervals, indicating the proper location of each retaining clip. When

    connecting the sensor pigtail to the harness, ensure that the connector seal is

    crushed uniformly all the way around between the connectors.

    2. Connect the sensor harness connector.

    3. Lower the vehicle

    leedavidian_19.png



    Thank you for using FixYa.com
    Regards, Lee Davidian

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    Oxygen sensor p0171 system too lean 1998 tyota camry whitch sensor to replace?

    Hello. Welcome to FixYa. Please allow us to assist you.

    If you have a P-0171 code, you do not have an oxygen sensor issue. The P-0171 relates to a dirty Mass Air Flow sensor, which will cause the other sensors to read incorrectly.

    What you need to do:

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    Is there any way to clean oxygen sensors to make em last longer? 1998 isuzu amigo 2.2l 5spd check engine light is on 5 codes come up on obd 2 reader: p0134 po135 po342 p0134pd p0135pd what do they mean ? i...

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    code p 0134 refers to heated oxygen sensor (HO2S) 1 bank 1 --no activity detected ===causes--- wiring open circuit ---heating inoperative ---HO2S
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    T1oo xtra has a sensor on pass side over fender inside by motor its unplugged, its has a yellow harness plug, what is this

    Hello.

    All Toyota vehicles use Yellow wiring connectors/harness plugs for the Air Bag System, and their related components.

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    VSC Trac off/ VSC Trac

    how do I determine which oxygen sensor is bad on my 2003 forerunner ? the check engine light is on and also the vsc trac
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