Bezerker

Chasis is a 97 DX Hatchback.
Harness is a 97 EX.
Motor is a 00 JDM ITR.

I wired up the motor with the EX harness, cut and extended some plugs, used some plugs off the ITR harness, and I still have four extra plugs on the EX harness that don't have anywhere to go. The plugs having masking tape with numbers (1-4 left to right) on them in the picture, but they might not show up.



#1. (A little left of the oil filter) Its a grey 3 prong plug. Wires are white/red, brown/black, and blue/red. Is this supposed to go to the CKF and is the CKF under the timing belt cover?

#2. (right of the O2 sensor) Its a grey 2 prong plug. Wires are green and black. Secondary O2 sensor?

#3. (under the starter) Its a grey 2 prong plug. Wires are blue/black and black. No clue.

#4. (comes out of the harness right before it goes into the cabin) Its a black 2 prong. Wires are light green/white and black/yellow. No clue.

Can anyone help me out?

HXMan

#1 is the CKF sensor Plug C102. Should go down by the bottom of the timing belt.

#2 Probably The Power steering pressure switch plug. C113 (not on the engine)

#3 ?????

#4 probably Evap Control Canistor Shut valve. C141 (not on the engine)

Get a helms manual if you don't have one!

Good luck.

Trey

HXMan is correct

On the CKF plug, you will need to swap the teg plug to the civic harness, omit teh brown wire and match the wire colors.

Forget about the Power Steering Pressure switch if you have a manual rack.

Take a closer pic of the wire by the starter.

4 connects to the charcole canister.

Good luck.

Check http://www.jspectuning.com/6gen for other help....

Bezerker

I was figuring that #1 is the CKF, but do the JDM ITR's not have a CKF or am I looking something over?

Here is the CKF on the B16A this motor is replacing (right?):


Now here is the JDM ITR, no plug that I can find but I haven't pulled the timing belt cover yet (it will be coming off in the next day or two):



I do have a manual rack. If I cut the PS plug off and tape it up, will the ECU throw any codes?

Here is a closer pic of the plug by the starter (I know its not the best, but if you give me specifics I will take the pic):

I figured it was the secondary O2 sensor, but that would be a four prong plug correct (from reading Trey's article again)?

My cannister does not have a sensor on it (and I am slowly cleaning my engine bay):

Again, will the ECU throw codes or should I not be concerned with that plug.

I previously had a B16A2 motor in my car. I did the swap before I really knew what I was doing and the wiring looked more like pasta than a harness. I ended up running an OBD2 to OBD1 jumper and I think that ended up solving a lot of the problems that I should have actually had. I want to keep this swap OBD2 to use the P73. I am really, really horrible with wiring so I really appreciate all the help. Thanks a lot HXMan-and Trey thanks and your article has been very helpful. I just really want to have my wiring situation taken care of before the motor goes in the car.

HXMan

Totally understand. I did my own swap by myself..and my wiring was messed up for about 1 year before I finally got it all sorted out.

Are you using a JDM P73??? I'm not sure if the JDM b18c has a CKF sensor....but if it doesn't you definitly better go with a JDM ECU. Unless maybe there is an easy way to add a sensor??

The ECU shouldn't throw any codes for the PS. All it does is raise idle when the steering is being used. I don't think you will have a raised idle with it allways disconnected.

Oh, about the EVAP can....you aren't in Cali..so you should be ok there. I think the JDM cars are the same as your setup(no valve on tank). But, *most* US civics excluding the Hx, and certain Dx models had an evap can with a valve, as well as a fuel tank pressure sensor. With a USDM ecu you will throw at least one code, for the fuel tank pressure sensor.

With the JDM ITR ecu you wont. I KNOW from experience it doesn't need a secondary O2 sensor, fuel tank pressure sensor, or an evap can valve.

If I confused you just let me know.


[Modified by HXMan, 3:58 PM 10/15/2002]

Nameless RB26

There was no CKF sensor on my JDM ITR.

There is also no vtec pressure switch, which I believe is the one dangling by the starter.

tonyxcom

If you still need help, give me an email address with storage for about 6 MB and I will send you a nifty present.

I have some really nice scans of the Helms that show the diagrams and locations of all the plugs on the EX Harness and the pinout at the ECU.

There is a plug where you have to reverse the wires. It is either the IAT or the IACV.

Oh, and I also have scans of the 2000 ITR engine and sensors etc. That would be another 3MB.

I scanned them and printed them so that I could write on them when figuring out what I needed to do to the harness. And the motor started on first try, idled fine, and didn't throw any codes

I'll see if I can put this stuff on we-todd-id.

Bezerker

I am running the JDM P73.

I have gotten super busy and my swap is falling behind right now, but I wanted to thank everyone for all the help.

I think I am pretty straight on the extra plugs I have:
1-CKF which I don't have
2-PS which I don't have
3-Vtec Pressure switch that I don't got
4-Emissions can that I don't have a sensor on

I will probably let the plugs dangle until I get the motor in and see if it throws any codes. If it doesn't throw a CEL, I will cut them off and tape them up.

My next issue is what tonyxcom brought up, which of the sensors needs the wires swapped around?

Thanks again everybody. (tonyxcom, I may be IM'ing you in the future about those scans)

Trey

I have the 96 P73 ecu and a 98 GSR swap in a 96 Civic. I didn't have to swap the IACV wires like the 99-00 ecus need.

The rest of your wiring is done. Plug in the ecu, crank up the car and check for codes. You shouldn't have any.

Kataku2K3

#3 looks like VTM (VTEC pressure) are you sure you have it connected??

tonyxcom

There are not Vtec pressure switches on JDM ITRs.

Kataku2K3

Well that would make sense on why there is an extra plug layin around huh.

HXMan

I don't understand why???

tonyxcom

Because they dont use them, so their ECU's dont read them, and VTEC will engage without them. I can unplug mine and my vtec still works.

I guess Japan thinks that oil pressure is for Sissy's

HXMan

This I understand....but there must be some reason. Do we have a pressure switch as some sort of reliablity issue?? Afraid us americans won't remember to keep the oil full and clean??

tonyxcom

Maybe its a longevity thing. Since they change motors at 30k miles... maybe in the long run, the pressure drop when vtec engages is enough to wear the motor... hell I dont know.

Bezerker

Is it that all JDM motors don't have the pressure switch or just the ITRs?

CHEETAH

iTrader: (2)

#3 may just be reverse lights, I couldnt make it out ... if not then your fan switch ...

greg

Jackson

All '96+ b-series vtec cars are missing the pressure switch in Japan Land.

irunfromcops

tonyxcom - if your sending those scans out anyway could you forward me a copy? i'm about to take this on in the next few weeks and i want to try to get some kind of understanding of it ahead of time.

sleeprhatch

me too please i am about to do a 99 jdm in a 98 hb. i need all the help i can get

Kataku2K3

I've never seen the reverse light switches wires be blue and black on a OBD2 EX wiring harness. The only two that i can think of being that combination a long with a 2 pin plug would be the IAC and VTM. Try connecting a voltmeter to the black wire in the plug then grounding it to the thermostat housing to see if there is continuity. If there is I'm still thinkin that it is the VTEC press. tonyxcom: also if JDM ITR ECU's don't look for a VTM reference then do the motor come with VTEC solenoids? Anyways i was just wondering cuz even if the ECU doesn't look for it i would still plug it on if it has a pressure sensor. Just think it would look cleaner. I'm gonna go check out my friends car cuz he's got a 98 spec RHD JDM ITR.

Nameless RB26

This is a vtec pressure switch. Didn't we establish that already?



Blue wire w/black stripe and black wire = VTEC pressure switch.

tonyxcom

00 ITR Harness Plugs and ECU Pinouts.
http://www.we-todd-did-racing.com/we...MxeTU0MQ%3D%3D

96-98 Civic EX Harness Plugs and ECU pinouts.
http://www.we-todd-did-racing.com/we...MxeTU0MQ%3D%3D

Enjoy!!!!

irunfromcops

Tony, your the man. thank you so much for those scans. they're going to help me alot with my swap now maybe i will be able to do the wiring myself.