[janelle]

I ended up making a k20a2 conversion schematic for a '99 automatic CDM EK, as well. I used the hasport guide, the hondata diagram and the actual chassis (friends EK) to figure out the proper connections.

I am about to attach some good info too

About using the chassis' main relay and just adding a single extra relay for O2 heater into the conversion harness?????? I was thinking about trying to figure that out, but haven't had a chance to look at it yet.

Also, I was wondering about properly powering the sensors/coils(pins 9, 14, 20 of RSX C101) using a single circuit and just using a 30 amp inline fuse for that circuit. I made my EF harness that way, but after making the EK schematic and looking at Hasports guide for the EK, I was wondering if that might be a bit hazardous?

 

[joon]

thank you so much for taking the trouble to do up the diagram

i've saved your diagram for future reference

 

[kazino42]

It's been awhile since I check this post.... EF an EK info added with better pics.:up: Once, I finish my K24/k20 build up. I'll try and take pics for wiring in a DC2.:dance:

 

[ngq]

Good stuff Thank you.

 

[janelle]

Here's a good place for wiring - just to keep all wiring info in this thread (I think I posted it elsewhere):

http://www.vehicle-wiring-products.co.uk/VWPweb2000/cables/cables.html

They're the only place I found that sells all the color/striping combinations required in whatever lengths you need/want. All of the wiring for the EK harness I just started cost me $40 ish shipped (REF16 - 42 meters in 25 different striping/color combinations). Shipping was five days (excellent time since they're in the UK).

Also, I've been working on a digram that uses just one relay for the EK. It's not finished, but I'll post it up sometime to see if anyone is willing to help me figure it out.

 

[nikos]

here;s the one for eg using a rsx type s ECU

 

[nikos]

if you burn your ECU, not my fault

 

[nikos]

If whoever gave me these notes, wants to take credit, go for it. I am not sure if they want their name public or not

 

[bossman032]

where did u steal it from??

making an harness is not easy for people who have never done it..

250 is not much..:silly:

 

[kazino42]

1st time doing the swap and 1st time making the harness. I ran through problems and fix the engine lights. After learning how to make the harness, made me able to trouble shoot the wiring easier. If you can understand the Hondata schematic, you shouldn't have a problem of building one. Now, with more info and picture, should be cake.....

 

[speedboi]

good stuff :up:

 

[jdmhatchturbo80]

can anyone post some picture of connector and e plug to cut on 02 civic??

cause i m about to go junkyard but not sure which to cut...

 

[janelle]

can anyone post some picture of connector and e plug to cut on 02 civic??

cause i m about to go junkyard but not sure which to cut...

Here's a picture of the two you'd want. The grey one is the gender with the male terminal pins.

 

[speedboi]

is this the wiring diagram that is only for hondata or can i use it for a stock type r ecu? Do u also know what wiring to jump to bypass the fuel immobilizer?

 

[*HAZARD*club]

This is Great !!! make ur Own harness, hmmmm but i got AEM 1070, how that going too work? will this harnees work on AEM 1070 in EG? any help, thanx

 

[janelle]

is this the wiring diagram that is only for hondata or can i use it for a stock type r ecu? Do u also know what wiring to jump to bypass the fuel immobilizer?

As I understand it, the JDM type R PRC ecu provides ground (on/off signal) to the fuel pump relay via pin E10 (@ ECU E plug). The USDM RSX -s PRB ecu provides ground (on/off signal) to the fuel pump relay via PIN E1 (@ same ECU E plug). So, to use this diagram with a PRC, you would have to move the pin at position E1 on the diagram to position E10 (all on the E plug). I don't have any first hand experience, though. Try it and contribute. I'm thinking the idea that the PRC has a fuel pump based imobilizer was based on the fact that fuel pump relay control is provided via different pins on the E plug - PRB vs. PRC (unkown at the time). From the threads I've read, people were just grounding the fuel pump relay so it came on continuously with ignition.

This is Great !!! make ur Own harness, hmmmm but i got AEM 1070, how that going too work? will this harnees work on AEM 1070 in EG? any help, thanx

I don't see why it wouldn't work. CRX (username) has a home made harness and is also using an AEM EMS.

His build thread:
http://www.k20a.org/forum/showthread.php?t=20816

Here's a picture I borrowed (his car):

I'm not sure if he used the diagrams from this thread. You might want to PM him.

 

[Janky99]

What about connector E7 on the E plug? is that just a ground? or is that reading voltage, on the Hondata schematic it says ground.. on the OEM service manual, it reads power... I don't understand, but that is what is causing this CEL I'm getting VBU voltage too high.. and also on the stock ECU plugs, my plugs A2 and A4 aren't getting any ground :/ Help me out here! -Ben

 

[janelle]

What about connector E7 on the E plug? is that just a ground? or is that reading voltage, on the Hondata schematic it says ground.. on the OEM service manual, it reads power... I don't understand, but that is what is causing this CEL I'm getting VBU voltage too high.. and also on the stock ECU plugs, my plugs A2 and A4 aren't getting any ground :/ Help me out here! -Ben

As I understand it, E7 on the ECU E plug provides a ground signal for the main relay - switching it on once an ignition signal is detected through E9 on the ECU E plug. E7, according to the hondata schematic, also provides constant backup power to the ECU.

I was testing an EK harness out a couple of weeks ago and noticed - with ignition on and a DMM connected between E7 and ground, voltage would register on the DMM and the main relay would not click on. However, with a jumper connected between E7 and ground, the main relay would click on.

What conversion harness are you using? Is it a single relay, or 3 relay harness?

 

[janelle]

What about connector E7 on the E plug? is that just a ground? or is that reading voltage, on the Hondata schematic it says ground.. on the OEM service manual, it reads power... I don't understand, but that is what is causing this CEL I'm getting VBU voltage too high.. and also on the stock ECU plugs, my plugs A2 and A4 aren't getting any ground :/ Help me out here! -Ben

Is VBU an acronym for "voltage back up"?? I haven't read up on that code??

 

[Janky99]

I'm using a Rywire 1 relay harness.

Yes the VBU is Voltage back up, i read in the manual on how to test it, and its was not a very good troubleshoot.

What my main problem is, on the C152 connector on the EF harness (the sqaure one covered in grease) I do not have the ground that goes to the main relay, which in turns should be "power grounds". If i jump a ground to that "power ground" at the C152 connector, I get power to my ecu and main relay, but I throw the VBU code... I don't know what to do, all the oem manuals do not really explain where that wire would have went, so I don't know why its not grounding. Thanks -Ben