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Previous Thread Next Thread Print Thread Rate Thread wiring for O2 sensor on on 94 p/u ? #794590 03/05/07 04:02 PM Joined: Dec 2005 Posts: 7 Okeana OH W wildyota OP Need a Spot Hi, I bought a 94 toyota 4x4 22re and the wiring for the O2 sensor had been hacked up by the P.O. I bought a "universal" O2 sensor and am having trouble finding/understanding the a wiring diagrams I found. The univerals O2 sensor has 4 wires 1 blue, 1 white and 2 black. Any ideas on how to wire this up to my truck? My truck has 1 black, 1 brown, 1 white/red, 1 black/yellow. I think... that is going from memory.. 88 4x4 Toyota - Stock - Re: wiring for O2 sensor on on 94 p/u ? [Re: wildyota] #794591 03/05/07 04:23 PM Joined: Dec 2003 Posts: 7 Mid-Michigan applesauceman55 Need a Spot Sure, but the wire colors in my 94 electrical manual don't match your descriptions. Here are the connections I have for OX1 (main ox sensor): Black - goes to ECU OX1 terminal Pink/green stripe - goes to HT1 (heater) terminal on ECU Brown - ground White/red stripe - +B (battery) from EFI main relay Hope this helps... 1994 Pickup 4X4 22R-E 5 speed Re: wiring for O2 sensor on on 94 p/u ? [Re: wildyota] #794592 03/05/07 05:38 PM Joined: Jan 2000 Posts: 12,153 N. California. USA 4Crawler Web Wheeler Sensor wiring: http://www.4crawler.com/4x4/O2SensorWireColors.html r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad - 4x4Wire discount code Re: wiring for O2 sensor on on 94 p/u ? [Re: applesauceman55] #794593 03/07/07 02:45 PM Joined: Dec 2005 Posts: 44 Cincinnati, OH 9 95mini Getting the Wheeling Fever I have a similar 02 problem with a 4 wire, same colors. The responses to this post really haven't helped me out. I don't really need to know which wire is which, i need to know which one to connect. Knowing this wire is signal, etc, isn't helping me connect the right four together. I could use some info like black-white/red, and so on. Re: wiring for O2 sensor on on 94 p/u ? [Re: 95mini] #794594 03/07/07 04:50 PM Joined: Jan 2000 Posts: 12,153 N. California. USA 4Crawler Web Wheeler Quote I have a similar 02 problem with a 4 wire, same colors. The responses to this post really haven't helped me out. I don't really need to know which wire is which, i need to know which one to connect. Knowing this wire is signal, etc, isn't helping me connect the right four together. I could use some info like black-white/red, and so on. Put the two prior replies together and you should have the answer, the first one shows the connections at the ECU and in the factory harness, the second one shows the O2 sensor connections. If that does not help, I put them together for your convenience below: Quote Black - goes to ECU OX1 terminal = O2 Signal+ = Blue wire Brown - ground = O2 Signal- = White wire Pink/green stripe - goes to HT1 (heater) terminal on ECU = O2 Heater = Black wire White/red stripe - +B (battery) from EFI main relay = O2 Heater = Black wire r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad - 4x4Wire discount code Re: wiring for O2 sensor on on 94 p/u ? [Re: 4Crawler] #794595 03/07/07 06:55 PM Joined: Dec 2005 Posts: 7 Okeana OH W wildyota OP Need a Spot 4crawler thank you for helping us less toyota educated folks. You have helped me out alot in the past with your informative posts!....thanks for making the O2 sensor wiring fool proof in your last post, it helped me... I've looked at your wiring diagrams, denso wiring diagrams, fsm and still had it goofed up. <img src="/forums/images/graemlins/kewl.gif" alt="" /> 88 4x4 Toyota - Stock - Moderated by  4Crawler, 4x4Wire, kewlynx  Hop To Mitsubishi Forums ------  Mitsubishi 4x4 and SUV Tech  Mitsubishi Diesels  Mitsubishi ArchiveToyota Forums ------  Early Toyota Trucks  Toyota 4Runner, FJ Cruiser &...  T100 & Tundra Forum  Tacoma Forum  Toyota Tech ArchiveJeep Forums ------  Jeep Talk  Jeep TechIsuzu Forums ------  Isuzu 4x4 & SUV Talk  Isuzu 4x4 & SUV Tech  Isuzu DieselsKia Forums ------  Kia Talk  Kia Sportage & Sorento TechOff Topic Chat ------  4x4 Gallery  Off-Topic Chat  Recreational Access & Land ...  Politics4xForums ------  Outdoor Gear  General 4x4 Discussion  Tools and Fabrication  General Communications  Amateur Radio  GPS and MapsParts Bin ------  Private Party - Garage Sale  Private Party - Items wanted  Vendors, Hot Deals, Group Buys4x4Wire Back Yard ------  Suzuki Forum  AZ Crawler Crew  Cal-Nev Crew  General Ford 4x4 & SUV Forum  General Dodge 4x4 & SUV Forum  General Chevy 4x4 & SUV ForumFeedback & Testing ------  Problems, Questions, Suggestions4x4Wire Staff ------  Forum Moderators  Problem Threads Print Thread Switch to Threaded Mode 5 Excellent 4 Good 3 Average 2 Bad 1 Terrible View Profile Private Message Follow User Forum Posts View Profile Private Message Follow User Forum Posts View Profile Private Message Homepage Follow User Forum Posts View Profile Private Message Follow User Forum Posts View Profile Private Message Homepage Follow User Forum Posts View Profile Private Message Follow User Forum Posts

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