ive looked and looked all over the net...
and even bot a stupid chilton book....
and i cant find nothing on the tcm diagram...
im looking for a write up or if anyone knows
a site that has tcm schematics will help..
or just post here...im doing an auto civic bseries
swap....anything will help thanks...!

 

what do you need help with?

 

plug in a p75 tcm into the honda del sol...
from what i read i need to connect it to the
cluster harness...shift module...ecu...and tranny..
i need a wiring diagram and what wires
go connect to what?

 

He is doing an OBD2a del sol SOHC chassis installing an OBD2a Integra LS motor/tranny. The OBD2a del sol setup using a single ECU to control both the engine and trans functions. The OBD2a Integra using an ECU and a TCM to control the engine and trans functions. Let me know if you decide you want me to build you a harness.

 

okay well blown hatch seems like he has more exp in this field of auto trans swaps. so ill let him take it from here lol

 

sure will blown hatch....i usually do all my wiring work...
and that price is alittle to much for me..if worse comes to worse
ill hit u up.

 

so... where is the tcu/tcm on an obd2 teg? I have a 2000 integra as a donor car and cannot even find the transmission control unit/module. Are they integrated with the ecu in this model year? If it's integrated, can't I just swap all the wiring including the body harness across and all should be nice? or can I run the OBD II ecu and just ignore the CELs and codes for now, since it will be missing the second o2 sensor and stuff like that?

Thanks.

 

On the OBD2B setup (00-01 Integra), the auto functions from the TCM are integrated into the ECU. What are you trying to do?

 

I have swapped in a 2000 B18B1 with auto into 95 civic. just trying to make it run right. I PM'd you in regards to the idea that you may be able to supply some kind of plug and play solution, based on what I read in your other posts. This is an OBD2B automatic; I am not sure what the solution is to wire it in correctly to the civic. Thanks.

EDIT: since that earlier post I have found out that the TCU is indeed integrated with the ECU, which may make the wiring easier... maybe. Assuming the civic chassis harness has got all the connections that the transmission B pins make, I guess the only extra wiring that needs to be added on top of a conversion harness is a few wires out to the transmission side of the engine bay to meet the engine harness at the shock towers. Or do i have the wrong idea?

 

The OBD1 civic does not have anywhere near what you need for you to be able to plug in the harness and the shock tower. There are only two sensors of the 10 that are already installed on the civic shock tower. The wiring is more complicated than what you are thinking. You can do it, but needs some solid investigation. And yes, I can still supply you a harness if you need one.

 

right... whatever happened to honda backward compatibility??

are you referring to all the extra OBD2B sensors like second 02, EVAP shut off valve, etc. in addition to sensors on the transmission, in order to make it run with the obd2b ecu?

is there any way to wire in a 94-98 integra tcu? to avoid the rat's nest of obd2 sensors and codes....

and if you supply the harness, are we talking about replacing the whole chassis harness, then, in order to make the connections? or do you mean ypou supply the harness and tell me where to plug it, to make all these extra connections?

Thank you for your help!

 

I haven't even started on all the extra crap that the OBD2b ecu needs to see in order to not throw codes and make it run properly. Not to mention the OBD2b integra has an immobilizer.

The OBD1 civic does not use all the sensors that OBD2B integra uses and therefore the pins are definitely not in the Civic chassis harness. If you want to run the OBD2a ECU and TCU, that is a possibility, but the OBD2b mission has a couple extra sensors that the OBD2a TCU does not use. Essentially you are splitting hairs trying to make something work.

 

sorry, I am new to the conversion harness thing. So what you could supply would just be a conversion harness at the ecu plugs... from OBD1 to OBD2B.
Would it have the extra wires needed, that the civic harness lacks?

and then I would have to splice in all those extra wires, (assuming you can pin them into the plugs) to the loom that runs out to the engine bay and plug them into the teg harness at the shock tower somehow, making all the correct connections.

and presumably the civic chassis harness also lacks those wires that go across to the shift console, the cluster, the immobiliser, etc etc?...

Am I on the right track?

So three questions:

1) is it worth swapping across the ENTIRE Integra chassis harness, dashboard, heater, cluster, immobiliser, everything everything...? (perhaps not the the lights and abs harness to the back of the car).

2) which is less work? getting a conversion harness, and making ALL the extra connections needed, or swapping the entire Integra over to the civic, down to the ignition key?

3) do I just swap in a manual transmission, and use the time and stress saved to teach my mother in law how to drive standard? and presumably throw away my beautiful custom polyurethane trasmission mount? I myself learned on a manual and abhor automatics.

It's killing me that I went this far with this F N piece of automatic C P.

 

*Blown hatch!, get at me asap for a harness....in need.