tepco

Ok im helping a friend complete an auto to manual swap. I did the ECU mod from this site and have searched for an answer to this question but cant find it.

He did a complete engine transmission transplant from a 98 manual H22 SH into a 97 auto H22 and all hooks up except for one plug from the engine harness to the body harness. The plug from the engine is a 8 pin female and is relatively rectangle and the only plug left for it to go into is a round 14 pin male.They are both gray and of coarse a CEL is on most likely because this connection (or should i say non-connection).

I have a picture in my phone but cant seem to get it to load up.

Hopefully you guys are familiar with this and i over looked it somehow on this site.

Thanks

Figured out the picture.

gstrudler

If I recall, the '97 actually had slightly different wiring than later models. If you can pull the CEL, I can try checking my ETM and see what the connections are supposed to be, but you are probably going to have to splice the wires together.

How did you get an SH into an auto without a ton of work?

TheJGB3

How did you get an SH tranny to fit a basemodel block? I thought that wasn't possible?

Kronn 98SH

"He did a complete engine transmission transplant from a 98 manual H22 SH into a 97 auto H22"

that would include the block

tepco

I dont have the CEL code it was transmission related though.

I have no problem splicing/re-pinning or what ever it takes as long as i know which. I need to know if the color wires will match or which go to which. It looks like i wont be using 6 of the body harness wires so i don't want it to be a guessing game. Im sure someone has been through this.

Correct Kronn, it was a complete swap so it wasn't that bad, but i was not hands on involved with the install just helping with the completion.

Im working on the reverse lights now.

tepco

Also is the Transmission Control Unit next to the ECU needed after the ECU mod? I have read that it is not, i have the manual unit in now.

gstrudler

What are the wire colors on the harnesses?

tepco

Im working on getting the wire colors, been working a lot and the car is not at my house. Ill have a diagram with wire colors this week.

tepco

Ok, i have the car at my house now so i will be able work on it and answer questions quicker.

Here are the wire colors listed with dominant colors first and stripe second, looking at the plug with lock/latch up.
Car harness side.

(....'s are for post appearance.)

......grn/blk...grn/wht...blu/yel......

yel/blu....wht/blk....blk/wht...yel/grn

..red..........blu.........wht.........grn

......brn/blk....wht.......red/blu......


The engine/tranny harness side.

......brn/blk.........X............X.........Yel

......red/blu.....wht/blk.....yel/blu...grn/blk

The X is a blank spot. It looks like i should be able to just re-pin the plug, so if nyone can tell me which wires from the engine side need to match up with the car side it would be a great help.

Thanks

A Blue Lude

Does the SH engine harness include ATTS stuff? (alternative text: does the base harness not?)

tepco

Not sure, but someone must have run in to the problem I'm having..

Anyone?

98vtec

follow the wires to the ecu and give me the wire color and pin location

http://technet.ff-squad.com/wiring.obd2a.htm

gstrudler

Okay, finally got to look at this, going to update as i find info.

Chassis side is C143 and is for A/T vehicles. Looking at the diagram of colors you sent, they are numbered 1-14 starting left to right, top to bottom. So grn/blk is 1 and red/blu is 14.

1-3: A/T
4-6: PGM-FI
7-11: A/T
12: ground
13-14: PGM-FI

This leaves 5 PGM-FI's and 1 ground, which I can only assume correspond to the 6 pins on the engine harness. I will update in a minute when I find the matching connector.

This is going to get a little interesting...

So the other connector is obviously the mating connector from a M/T (still connector C143). Here's the pin-out...

1 YEL (fuse 13)
2 BLK/WHT (PGM-FI) except SH
3 WHT (PGM-FI) except SH
4 BRN/BLK (G101; ground)
5 GRN/BLK (back-up lights)
6 YEL/BLU (PGM-FI)
7 WHT/BLK (PGM-FI)
8 RED/BLU (PGM-FI)

It appears all the colors that match up should go together as they are part of the PGM-FI system. You obviously have some things that won't match up, such as the back-up lights and you are missing the blk/wht and wht wires that are apparently on a different harness. So it looks like you can get: red/blu, yel/blu, wht/blk for PGM-FI and brn/blk for ground. You can also connect yel and grn/blk, but will have to change the pinout at the ecu side likely. The biggest problem is that you have to find the wht and blk/wht which exist somewhere else.

okay, just found out that white is primary o2 sensor input and blk/wht is the heater control for the primary o2. worst case you could probably just splice down to the sensor itself. i'll let you know if i find out where it ends on the sh harness.

tepco

Great ill be working on this when i get home.

If this helps, these are the trouble codes that I'm getting.

P1491 EGR Lift
P1259 VTEC
P0325 Knock sensor
P0135 o2 Sensor bank one

I got these yesterday using the Auto Zone code reader.

Im sure these are all due to this plug.

Thanks for helping out with this guys.

gstrudler

yeah, I remember at least the egr and o2 were on that connector. wouldn't surprise me if the other ones were there too.

rcdawgs

I might have missed something (reading fast at work) and may be wrong, but are you going to have an operation ATTS unit without the many sensors the located around the SH uses to run the unit? Off the top of my head I know there are yaw senors in the mix somewhere.

tepco

gstrudler, thanks for all the help with this.

Here is an update, i re-pinned everything using the color matches. All i have left is position 8,9,10 and 11 which according to the info are for the A/T. i also have position 6 blk/wht and position 13 wht which should be o2 sensor?

I also have the solid yellow connected to the only yellow on the body harness which is in position 7 that you found out to be a A/T pin, do i need this?

Also if we find where the o2 sensor wires are should i pin them into this plug?

gstrudler

yeah, i wasn't sure on the yellow wire either, it didn't seem real clear. being that it specifies on the engine side (M/T) that it goes to fuse 13, i'm guessing it should be 12v, so you could probably test the leads on the chassis side and see if one of them has 12v coming from it.

from what i could see in the diagrams and pics, there might be a blue 4-pin connector on the engine harness that should go down by the primary o2 and would normally be right next to a grey 4-pin connector. i think the blue connector has the white and blk/wht you are missing. if not, there is likely a wht and blk/wht coming straight off the o2 that you could splice up to the connector (but only if they are not going anywhere already). if all the wires from the o2 are going into harnesses already, you might just need to find out where they come out on the ECU side and re-pin there.

tepco

I looked at a wiring diagram for both the 97 and 98 ECU and it looks like the o2 wires go into the same pin locations. Ill look for the o2 wires in the morning and give an update after. Got to get to work.

tepco

I found the front (primary) o2 sensor, it has 4 wires coming from it 2 white 1 black and 1 gray. It has a gray plug which is not connected and i cant locate a plug on the harness to connect it to. The rear is connected. I wish a had a prelude near by so i could compare things.

gstrudler

yep, should be a grey connector around somewhere on the engine harness and I think since it's the SH harness there might be a blue connector as well (but don't know if you'll need it). it's got to be there somewhere...

RomPirate

If you havent figured it out, i've got a writeup with pictures here:

http://www.preludepower.com/forums/s...d.php?t=302157

Search the page for the section that says: "Wiring Up Reverse Switch + Starting the Car"

tepco

Thanks Rom for chinming in, I have been using your write up quite a bit but my harness wire colors are different, for instance the reverse mod didnt work for me (i used the pin/wire location because the colors didnt match). But the plug trouble im having may contribute to that.

Aaron Nazeer

i have this same connecter not plugged in and it throws a p0135 for what I think I did manage to take the code off temporarily but I now end up with p0132 by splicing the blk/wht wire into the 8 pin connector please any help would be appreciated