Kiff

I'm in the process of doing a 5spd swap. I have the complete harness and ecu from the stnd. All the plugs work except for 1 (of course). it's a grey plug beside a white one, behind the ecu.

My guess is that it's trans related. The new one is smaller, the original was bigger. So I'm guessing it would tell my reverse lights, ADD and maybe O2 as those wires go to the trans and tcase.

What have others done with this issue? do I need to splice wires? can I leave it unplugged?

jasond

What engine are you using? What year is your truck? What year is the harness? Can you post a pic of the unused smaller connector and the old bigger connector?

Kiff

3.0 V6, out of a 90 going into a 91. I will try and get a picture.

Auto plug



Standard Plug



Location

Guardian_Saint

You should just use the auto setup with the 5 speed swap. If you are giong with that route then I believe you need to swap the dash harness aswell.

Elvota

So... you had a auto tranny behind your '91 3.0 and now you have installed a 5spd tranny from a '90 and will be using the '90 ECM. Am I following along so far?

I just got done swapping a '96 3.4 into a '90 3.0 V6 equipped 4Runner. I retained the 5spd tranny I already had, and the 3.4 also came from a 5spd equipped vehicle. I used the 3.4 ECM and wired that into the 3.0 wiring harness.

Are projects have some similarities.

First off, I think you need to get the EWD from both your vehicle and the donor vehicle. They can be downloaded here (link) for $10 a day. Well worth the money in my opinion.

The plugs you show were labeled IH1 and IH2. A majority of these wires went to the gauges, AC, CC or various other warning lights. Once you have the EWD, you can figure out which wires your 5spd ECM will need and which to abandon.

Check out my thread here: https://www.yotatech.com/forums/f160...5/index10.html

Towards the bottom of the page 10 I talk about the wiring I did with my swap. I think your ECM really only needs a few wires from this mismatched plug to operate properly. The ECM will also need to send a few signals to your gauges so you know what is going on.

But without the EWD's... I think you'll be guessing a lot and may create more troubles than you want.

Kiff

I have a complete Factory manual for the truck. I went with the the 5spd harness for ease of the swap so I dont need to swap every connector to the other motor. I'm sure all the necessary wires to run the motor go to the ECM, but this connector I'm guessing you're right Elvota, does gauges, cc, a/c ect. I will sift through the wiring diagrams and see what i can figure out.

If anyone has any other input that would be great.

Kiff

Do you think it would be possible to match wire colors? cut up the harness to make a adapter? Or would toyota have used different color wires from auto the manual?

fillsrunner4

Ya they change some wires colors. for the most part they are similar colors but you cant really do it like that

Kiff

Looking at the manual IH1 is my problem. They only show the automatic connector in the diagrams, no standard ones :S

fillsrunner4

have you looked at techinfo.toyota.com for the schematics? check them out.

jasond

1990 Maunal Trans


Pin#
1 Green/White, stop light switch to ecu
2 White/Black, Ground for t-case switch
3 Green/White, t-case indicator switch
4 Violet, Check engine light
5 White/Red, switched ecu power
6 Green/Yellow, circuit open relay to air flow meter
7 (2wd wire)
8 Blue, to fp in check connector
9 Black/Red, power to ignition coil
10 (auto trans wire)
11
12 Black/Green, constant ecu power
13 Green/Blue, speed sensor to ecu
14 Yellow/Black, from cruise ecu to check connector
15 Yellow/Red, from engine ecu to cruise ecu “OD”
16 Black/White, starter relay



1991 Auto Trans

Pin#
1 White/Black, Ground for t-case switch
2
3 Violet, Check engine light
4 Yellow/Green, OD switch
5 Green/White, stop light switch to ecu
6 Blue, to fp in check connector
7
8 Black/Red, going to check connector for rear ABS
9 Yellow/Black, from cruise ecu to check connector
10 Black/Green, constant power for ecu
11
12 White/Green, Ground for ecu
13(2wd, auto wire)
14 Black/Red, Power to ignition coil
15 Black, neutral start switch
16 White/Red, switched power for ecu
17
18 Green/White, Transfer pressure switch for ADD
19 Purple, A/C Water Temp Switch
20 Green/Blue, speed sensor to ecu
21 Yellow/Red, From engine ecu to cruise ecu
22 (Manual trans wire)
23 Green/Yellow, circuit open relay to air flow meter


I might have got some worng or have some missing, but I think that this is pretty close.

Elvota

JasonD is the man...

Jeremy11

This thread is awesome! Im doing a 3vze swap from a 94 donor to my 90 runner and this is huge problem for me since I swapped ECM's and harnesses. With the picture above from JasonD can I find the picture from the 94 and match numbers? Or will the TIS be of more help?