What does this wire go to?

Brandt

Junior Member
Hey y'all,

I'm toward the end of the months' long saga of replacing my 5vz. Installation of the new engine is next weekend, and I've discovered that a connector was pulled off of a wire. Connector is circled in the lower right corner of the image. Could someone please help me identify where this goes so I can order a replacement?

https://imgur.com/a/aHuCMfa

Oddly, I can't get the image to show up in the post, so a link will have to do
 
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Hm. I'm not able to get any hits for 5vz "ecu temperature sensor". Everything I find points to the coolant temp sensor. Would they use the same type of connector? If so, my real issue is solved.
 
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Hm. I'm not able to get any hits for 5vz "ecu temperature sensor". Everything I find points to the coolant temp sensor. Would they use the same type of connector? If so, my real issue is solved.

There are two coolant sensors. One goes to the ECU. The other goes to the temp gauge. Plus one on the transmission (slush box only).

The ECU one is this puppy here:

1991-2010 Toyota Engine Coolant Temperature Sensor 89422-35010 | Toyota Parts

[Incorrect info deleted. See newer post downthread.]

Please, ALWAYS give your year, engine, and 4WD/RWD and auto/5SP when requesting wiring help. Without that, anything I give you could be wrong. A close-up of the end of the subject plug would also have been real helpful.
 
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Thanks for the clarification, TheDurk.

The ECT/ECU Temperature Sensor naming difference was throwing me off. But it does sound like we are talking about the same thing.

You're right, I neglected to provide those details. 99 5VZ 4wd 5sp. I'll remember for next time.

Unfortunately, it's the end of the plug that was ripped off and I'm trying to repair. I can't find the original, (lost amidst other components, I suspect) so I'm hoping that the photo of a stock harness would provide enough context.

Thanks again to both of you.
 
Now I feel the need to chime in. The ECU coolant temp sensor comes off the passenger side of the harness. What the OP has circled is the driver side of the harness. Based off my examination, that plug that is circled goes to the front differential actuator.
 
Now I feel the need to chime in. The ECU coolant temp sensor comes off the passenger side of the harness. What the OP has circled is the driver side of the harness. Based off my examination, that plug that is circled goes to the front differential actuator.
That looks right. Very easy to miss when pulling a motor since it is so far down there.

edit to clarify: That is for the ADD position switch, not the the ADD VSVs that are up on the inner fender.

-Charlie
 
That looks right. Very easy to miss when pulling a motor since it is so far down there.

edit to clarify: That is for the ADD position switch, not the the ADD VSVs that are up on the inner fender.

-Charlie

Yep, that plug is very easy to miss.

When I looked at the comments to the OPs question, I was like HUH? The ECT (Engine Coolant Temp) sensor plug comes off the harness on the passenger side and the plug the Op circled is clearly on the driver side all by itself. On the passenger side, the Knock Sensor plug and the ECT plugs are right next to each other.
 
I see references to "T" tab and Split tab variants of this connector. Does anyone know whether there is a universal connector available for this repair?
 
I see references to "T" tab and Split tab variants of this connector. Does anyone know whether there is a universal connector available for this repair?
There's a small sub harness between the position switch on the ADD actuator (on the tube coming off the front diff towards the passenger side). You just need to repair that sub harness. Do it while the motor is out, otherwise access is very difficult.

I had damage in that same area on the parts truck that I got all my 4WD swap parts from (damaged by previous owner who took the engine - I wanted the rest of the truck for the 4WD parts...).

-Charlie
 
Unfortunately, I don't have any closer photos, or from a different angle. The challenge I'm faced with is that the connector was pulled from the wire and I'm unable to find where it ended up. So I have no direct comparison to find a matching replacement part. If I had that part, I'd probably just relieve the pins and pull them out, then re-terminate the cables and reuse the connector.

I did find this ebay auction. 4Runner ADD Differential Disconnect Vacuum Switch Valve CONNECTOR PLUG Pigtails | eBay
I wonder whether the t tab variant could be considered universal.

Any feedback on this?
 
Start watching this video at play time 26:25 to see how to access that wiring haness on the top of the differential that got damaged. You just have to disconnect the breather hose from the driver side fender well, disconnect the two vacuum lines at the switching valves on the driver side fender, disconnect the electrical connector at the ADD actuator and then take out the two bolts.

<iframe width="560" height="315" src="https://www.youtube.com/embed/bOOxfDFUFsA?si=lfSeXRKj9L5g-vPH" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
 
Yup I was wrong. It's the front fender that Charlie clarified. I thought the ecu coolant came off the passenger side of the injector harness not drivers.


That definitely needs corrected on the on this thread. :)

Sent from my SM-A536V using Tapatalk

Huh? What do you mean it's the front fender that Charlie clarified? Maybe you missed my comment. I identified for the OP that the damaged connector goes to the ADD actuator on the front differential. Charlie confirmed what I said. What Charlie said is it's NOT one of the connectors for the vacuum switching valves on the driver side fender well.

The ECU coolant temp sensor DOES come off the passenger side of the engine wiring harness, not the driver side.

Dude, what have you been smoking? Let me know because I'd like some so I could do some hallucinating as well.
 
Unfortunately, I don't have any closer photos, or from a different angle. The challenge I'm faced with is that the connector was pulled from the wire and I'm unable to find where it ended up. So I have no direct comparison to find a matching replacement part. If I had that part, I'd probably just relieve the pins and pull them out, then re-terminate the cables and reuse the connector.

I did find this ebay auction. 4Runner ADD Differential Disconnect Vacuum Switch Valve CONNECTOR PLUG Pigtails | eBay
I wonder whether the t tab variant could be considered universal.

Any feedback on this?

I think caused confusion with the photo link. The photo isn't of my specific harness, it's just an example photo for illustrative purposes. My wires aren't cut after the connector joint as in the photo. The connectors were disconnected during removal prep, and the part of the connector that was on the harness side is what was pulled off the wire. So one half of the connector is still on the car, and the other is missing.
 
Huh? What do you mean it's the front fender that Charlie clarified? Maybe you missed my comment. I identified for the OP that the damaged connector goes to the ADD actuator on the front differential. Charlie confirmed what I said. What Charlie said is it's NOT one of the connectors for the vacuum switching valves on the driver side fender well.

The ECU coolant temp sensor DOES come off the passenger side of the engine wiring harness, not the driver side.

Dude, what have you been smoking? Let me know because I'd like some so I could do some hallucinating as well.

Why do you do that? My original comment was the wrong connector. I said I was wrong and that Charlie had the correct part of the harness...

I been smoking nothing I am glad to see its been corrected. I was just trying to help a user and I immediately contacted him saying I was wrong. I even offered to if i had the connector to send it to him so he can fix his harness..

There is no reason to act like this when people are wrong.

As you missing the purpose of being here. Its to help people fix their rigs.
You are wrong at times, and that happens. I do didn't appreciate the comment at all that I am smoking something. Your not funny when you do this as you may think you are. As you see Charlie corrected the mistake that I made. Apparenetly TheDurk missed it to.


Please don't go on some tangent trying to justify yourself. I will delete my comments on this thread that not accurate. This way it will be accurate leaving this thread cleaner. Thus Correcting it.
 
I think caused confusion with the photo link. The photo isn't of my specific harness, it's just an example photo for illustrative purposes. My wires aren't cut after the connector joint as in the photo. The connectors were disconnected during removal prep, and the part of the connector that was on the harness side is what was pulled off the wire. So one half of the connector is still on the car, and the other is missing.

I may have the part you are looking for Brandit. If you want it or need me to send it to you PM me and will will talk.


Again, I am sorry for the confusion on the harness and misinformation. :-)
 
Why do you do that? My original comment was the wrong connector. I said I was wrong and that Charlie had the correct part of the harness...

I been smoking nothing I am glad to see its been corrected. I was just trying to help a user and I immediately contacted him saying I was wrong. I even offered to if i had the connector to send it to him so he can fix his harness..

There is no reason to act like this when people are wrong.

As you missing the purpose of being here. Its to help people fix their rigs.
You are wrong at times, and that happens. I do didn't appreciate the comment at all that I am smoking something. Your not funny when you do this as you may think you are. As you see Charlie corrected the mistake that I made. Apparenetly TheDurk missed it to.


Please don't go on some tangent trying to justify yourself. I will delete my comments on this thread that not accurate. This way it will be accurate leaving this thread cleaner. Thus Correcting it.

Dude, the reason for my comment is your comment was really really out there. And, I see you deleted that comment.

First of all, Charlie WASN'T the first one to identify the correct plug the OP damaged. It was ME. Second of all, you misquoted what Charlie was saying. Charlie wasn't saying it was one of the plugs going to the switching valves on the fenders but rather to the ADD actuator. Your comment was this "Yep, I was wrong. It's the front fender that Charlie clarified." So, your comment made zero sense to me and probably anyone else who had read through the thread and actually saw my comment before Charlie's

Then you said this, "I thought the ecu coolant came off the passenger side of the injector harness not drivers." Well, the plug that goes to the ECT DOES come off the passenger side of the harness, NOT the driver side. Again, another mistake you made.

So, from my perspective, you weren't firing on all cylinders. I know you know these vehicles fairly well, so that's the reason for my "What have you been smoking comment?"

I'm far from being a politically correct person and I call things as I see them. I'm guessing you're not use to people talking like I do which is how a lot of guys do when they are busting each other's chops. I guess not everyone can take this kind of banter.

It sounds like I upset you, and if that is the case, I apologize.

I just found it mildly annoying that what I contributed to this subject matter was completely missed by you. It's not like the thread is 20 pages long and you missed my comments, so I felt a little dissed by you. But here, I'll help you. I correctly identify the plug the OP broke in Post #7 https://www.toyota-4runner.org/3813033-post7.html

I love Charlie. I think he's an awesome contributor. I actually shot a very important video with him at my house. But, it just so happens I contribute a fair amount as well. Just some perspective for you from my point of view.
 
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Unfortunately, I don't have any closer photos, or from a different angle. The challenge I'm faced with is that the connector was pulled from the wire and I'm unable to find where it ended up. So I have no direct comparison to find a matching replacement part. If I had that part, I'd probably just relieve the pins and pull them out, then re-terminate the cables and reuse the connector.

I did find this ebay auction. 4Runner ADD Differential Disconnect Vacuum Switch Valve CONNECTOR PLUG Pigtails | eBay
I wonder whether the t tab variant could be considered universal.

Any feedback on this?
Don't make this harder than it needs to be. Any waterproof 2-pin connector can be used in that location. Polarity doesn't matter. Just replace it if you can't find the other half.

Mine broke the ADD switch itself, so it was more expensive damage than yours...

Here's a picture of the 4WD-related wires. Near the bottom is the section of harness in question - just replace it with anything that will connect those wires. The bottom left connector goes to the ADD switch, the middle bottom connector just connects two parts of the harness.

EEecTl6.jpg


-Charlie
 
Dude, the reason for my comment is your comment was really really out there. And, I see you deleted that comment.

First of all, Charlie WASN'T the first one to identify the correct plug the OP damaged. It was ME. Second of all, you misquoted what Charlie was saying. Charlie wasn't saying it was one of the plugs going to the switching valves on the fenders but rather to the ADD actuator. Your comment was this "Yep, I was wrong. It's the front fender that Charlie clarified." So, your comment made zero sense to me and probably anyone else who had read through the thread and actually saw my comment before Charlie's

Then you said this, "I thought the ecu coolant came off the passenger side of the injector harness not drivers." Well, the plug that goes to the ECT DOES come off the passenger side of the harness, NOT the driver side. Again, another mistake you made.

So, from my perspective, you weren't firing on all cylinders. I know you know these vehicles fairly well, so that's the reason for my "What have you been smoking comment?"

I'm far from being a politically correct person and I call things as I see them. I'm guessing you're not use to people talking like I do which is how a lot of guys do when they are busting each other's chops. I guess not everyone can take this kind of banter.

It sounds like I upset you, and if that is the case, I apologize.

I just found it mildly annoying that what I contributed to this subject matter was completely missed by you. It's not like the thread is 20 pages long and you missed my comments, so I felt a little dissed by you. But here, I'll help you. I correctly identify the plug the OP broke in Post #7 https://www.toyota-4runner.org/3813033-post7.html

I love Charlie. I think he's an awesome contributor. I actually shot a very important video with him at my house. But, it just so happens I contribute a fair amount as well. Just some perspective for you from my point of view.

I deleted the comments to prevent confusion as the my information was wrong. I was thinking originally the temp sensor, then I was thinking possible the add side which was wrong section. So it was best to delete the wrong info out to clean this thread. :-)

I will never understand your constant need for recognition. Its almost as if you have major ego issues.

I mean you actually got jacked and attacked me because I didn't mention you. I really hate to say this but that is silly and no reason to violate forum rules. I have had people ignore me on threads not acknowledge things and really didn't think anything of it. As the goal of this forum is to get things fixed and help people. Not be about a person, nor how many threads they have. Nor how many likes as if that is reason folks are here. These are things are irrelevant.

I have no problem ever being corrected when information is wrong. This is how people learn and get better. Understand things more thoroughly. I just have a major problem being called a stoner or saying I am high or be made fun of. Plus you actually did it because I didn't acknowledge you in a thread.....

I am sorry, I have no words for this. :/

Another thing... Please don't call me Dude, My name is Brillo or Jon.. I am not a surfer. :-)
 

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