PrecisionH23a

I've done extensive reading and research pertaining to this issue and I think I have all my wiring 90% correct... but I'm still not 100% sure. Anyways....

Set-up:
97 Prelude Automatic
Jdm h22 obd1 5spd conversion
jdm h22 obd1 dizzy
obd2 wireharness with obd1 resistor box (misc plugs taken from obd1 harness)
jdm p13 ecu with obd2a-obd1 conversion harness

So basically you have two options, run the crank TDC sensors by using the obd2 oil pump on the obd1 motor. Everything is plug and play. Bam... you are good to go.

Well I opted to use the obd1 oil pump and run the 4 wires (green, blue, white, red) directly to the JDM h22 obd1 distributor. Problem is... I'm not sure which wire goes where? I plan on trying to trace everything out tomorrow via Helms but I thought i would ask some of you first to try and spare me additional headache.

So I'm under the assumption all I have to do is run these 4 sensor wires to the obd1 jdm dizzy and then I need to convert the wiring to use the internal coil as well? I've done so much reading and wire-tracing that I can't think straight (why else am i posting at 4:30am?).

Any help will be greatly appreciated.


Here are some schematics I've managed to come across from bigjussin and homo Joel


obd1 dizzy

ABCD
EFGH

Sens - Term - ECU - Wire Color
CKP ---- B ---- B15 - Blue/Green
CKP ---- F ---- -B16 - Blue/Yellow
TDC ---- C ---- B13 - Orange/Blue
TDC ---- G ---- B14 - White/Blue
CYP ---- D ---- B11 - Orange
CYP ---- H ---- B12 - White

JDM Dizzy – on dizzy

ABCD
EFGH

A- yel/grn E- none
B- blu/grn F- blu/yel
C- org/blu G- wht/blu
D- org H- wht


USDM Dizzy Left Plug – engine harness

I J
K L

I- grn K- yel/grn
J- blk L- yel


USDM Dizzy Right Plug – engine harness

M N

M- blu
N- fat yel


Coil Plug – engine harness

O P
Q R

O- fat yel Q- none
P- blk/yel R- grn


Crank Sensor Plug – engine harness

S T
U V

S- grn U- blu
T- red V- wht

98TypeSH

I vote swap the oil pump and go that route. This is just a big headache with the wiring issue. And there are no diagrams that i know of that actually map out what each wire does in a JDM dizzy. Cool we got the wire colors, but wtf does each wire go to.

PrecisionH23a

The engine is already in the car and the new timing belt was already put on.

It would be one pain in the *** by having to install a new pump at this point.

98TypeSH

Do you have both dizzys in question ? Maybe pull them apart and come up with a diagram of your own.

I know how wiring issues are, so i feel for you man. I got a USDM OBD2 dizzy housing at my house, but i dont think thats going to be much help.

PrecisionH23a

Ive got the following dizzy's laying around my garage:

jdm obd1, usdm obd2, usdm obd1.

At this point it would be kind of rediculous to replace the oil pan. Do you recommend running the obd2 dizzy with external coil and simply just running the 4 CKY/CYP wires into it? I know those 4 wires are going to be a bitch, lol.

98TypeSH

the CYP sensor is located inside the OBD2 dizzy housing. The connector on the dizzy side looks like so.

AB
CD

Wires B&D are the CYP sensor wires. One is yellow one is black.


If at all possible switch to the OBD2 external coil dizzy. No cutting of the harness needed to get the coil to work. Just need to figure what sensor you are trying to get to work.

Are you talking about taking the wires from the wiring harness and extending them directly to the ECU ? or actually finding a way to install the sensors onto the pump..


Modified by 98TypeSH at 12:40 PM 2/25/2005

PrecisionH23a

I made a wire harness from where the sensors bolt up to the oil pump housing and ran them to the dizzy. I have a diagram from honda now that may help me out... I'm just trying to figure which wire goes where in relation to the dizzy.

For those of you that don't know...

The CKP sensor determines timing for fuel injection and ignition of each cylinder and also detects engine speed.

The TDC Sensor determnines ignition timing as start-up (cranking) and when crank angle is abnormal.

The CYP sensor detects the position of no 1 cylinder for sequential fuel injection to each cylinder.

gerhard

Yepper,

RPM's are read by the CYP, and among other things, the signal is sent to the tachometer.

Frequently, when the ICM in the distributor goes intermittantly, the RPM signal jumps all over the palce. With Auto Preludes this causes harsh shifting, as the VSS says the car is traveling at one speed and the CYP indicates the engine is traveling at a rate it's not.

Another thing: On distributors that are not keyed like the OEM ones, you need to manually rotate them so the while at TDC the CYP and the CYP's streator are lined up... otherwise the injector timing will be off...

98TypeSH

dunno if this helps.

PrecisionH23a

I think I got it figured out guys.... I'll keep you updated.

Thanks for trying to help me out

Keith

I would have opted for the oil pump swap too. From what I've heard, the JDM OBD1 distributor is known to have issues since it has the extra load of CKP and TDC....

Keith

PrecisionH23a

I'm back.

Long story short... mother **** this bullshit. Electrical wiring can suck my ******* ***. If this **** doesn't work, I'm ordering the obd2 oil pump housing.

mgags7

i ran the 4 wires from the old obd2 oil pump location over to the jdm dizzy on my car and it worked out fine....

i dont notice any issues with the dizzy either....

the 4 wires are the tdc signal (tdc), tdc ground (tdcm), ckp signal (ckp), and ckp ground (ckpm
)...

the tdc signal is the orange/blue wire coming out of the distributor
it is green on the old oil pump sensor connector

the tdcm is white/blue coming out of the distributor
and red on the old connector....

the ckp is either light blue or blue/green coming out of the dist
and blue on the old connector....

the ckpm is either light blue/yellow or plain white coming out of the dist
and white on the old connector....

each sensor and its ground are on top of one another if you are looking from the front of the car......

this was all gotten from the civic h22 swap guide page on here (h-t) if you need any more info, either check that or shoot me a pm......

PrecisionH23a

lol

isn't it funny whenever you FIND the information someone posts it up? lol Thanks for the info bro

I spoke with BigJussin a little earlier and he ran over my wiring with me. I was also at honda for the majority of the day with my mechanic buddies going over all of the vehicle wiring. I feel pretty confident that with his info and yours that it should crank up. Thanks again guys.

PrettyLude

keep us updated precisionh23a

Eddiebx

blah you should've checked your pms, i sent you all the pin outs of the obd2a and obd1 ecus, for the ckp,cyp,tdc sensor, this morning.

Probably would've helped you figure out your mess,

I'll post them anyway incase someone else is looking for the same exact info.

----OBD2A-------
C2: CKP+
C3: TDC+
C4: CYP+
C12: CKP-
C13: TDC-
C14: CYP-

-----OBD1-----
B11: CYP+
B12: CYP-
B13: TDC-
B14: TDC-
B15: CKP+
B16: CKP-

PrecisionH23a

you did? ****

just curious.... on the obd2 harness there is a yellow/grn wire for the dizzy on the 4 plug pin. do i leave that one laying around? I know I'll be leaving the green one unattached and the fat yellow on the 2 plug obd2 harness unattached as well. I'm pretty sure I do.... I can't read what Justin told me earlier. Damn oil spots.

i'm about 99% finished now, hehe.

Eddiebx

the fatty two pin connector to the dizzy is left alone.

on the coil plug for the external coil, you should jump the yel and the blk/yel wire together, and leave the green loose. ( this is assuming your gonna stay internal coil)

on the 4pin connector on the obd2 dizzy i am pretty sure the green is left loose and that yel/grn wire is your ignition signal from the ecu. to verify just trace the green and make sure it goes to the green on the coil plug.

And my best guess on the other two would be a pair of wires for the sensor in the dizzy?

keep in mind on the internal coil, you will not need to run that green wire to the plug so it would just be a blank spot, as you probably noticed on the dizzy side of the connector as well. so all you need going into the obd1 dizzy on the 8 pin plug is 3 pairs of sensor wires, and one grn/yel wire from the ecu.

now the fun part is, go and trace out which wire is which in the oil pump and ****. you can definitely figure it out going by the pin outs i listed above.

98HB

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote">I'm back.

Long story short... mother **** this bullshit. Electrical wiring can suck my ******* ***. If this **** doesn't work, I'm ordering the obd2 oil pump housing.</TD></TR></TABLE>

I'm glad that you stuck with it and almost got it figured out
I do have one question, how did you mount the CKP sensor on the OBD1 oil pump.

PrettyLude

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98HB &raquo;</TD></TR><TR><TD CLASS="quote">I'm glad that you stuck with it and almost got it figured out
I do have one question, how did you mount the CKP sensor on the OBD1 oil pump.</TD></TR></TABLE>

you can't mount the ckp on the obd1 pump they dont have the spots for the bolts to go, plus you don't have the magnetic pickup on it

98HB

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrettyLude &raquo;</TD></TR><TR><TD CLASS="quote">

you can't mount the ckp on the obd1 pump they dont have the spots for the bolts to go, plus you don't have the magnetic pickup on it</TD></TR></TABLE>

I know that you can't mount it, but isn't he using a OBD1 oil pump/housing?

PrecisionH23a

It runs.

I'll post the wiring schematics sometime tomorrow

5hif7

Yah, thanks for scaring the **** out of me first, ***

2point6

We (Collectiveracing) just finished a 98 ss to 5speed conversion. The car was converted to OBD1 and a stock p13 was used. The distributor must be converted to obd1 as well. This will require rewiring the the sensors at the oil pump to the OBD1 distributor. THE CAR WILL RUN if you leave the stock sensors in place, but timing adjustment will be impossible.

I am sorry for not posting the wiring at this time.

PrecisionH23a

Yep... I did the 5spd conversion as well

Fun stuff. Sorry I scared you Nick... I find humor in those types of things. hehe.