quick ignitor chip question

[n1smodr1ft]

it appears that i bought a s14 ignitor chip and i have and s13 can i make this work? if so what are the wires to wire it up?

[n1smodr1ft]

oh im pretty sure i need part #22020 50F00 and i have 22020 50F01
Modified by n1smodr1ft at 8:59 PM 6/4/2008

[Hijacker]

They shoudl be the same. The different part number is probably partly due to an update to the circuitry.

[nzmoman]

check some of the stickies. There are some lists of compatible parts and I know that ignitor chips is on there. I have an old Infinity chip as a back up and its is exactly the same as the one on the S14 SR which looks just like the one I had to replace on my s13 Sr

[n1smodr1ft]

ok so here is the deal

i have a professionaly done soch wire harness converted to work with an sr and a q45 ignitor. so none of the wires are the right color

i have a s14 ignitor chip so none of the wire colors are right on the heavy throttle site.

So what i need to know is.... how to wire up a q45 ignitor to an s14 so i can match up the wires from the pigtails on my q45 harness to the new s14 harness.

at least i think its an s14 chip the wires are

on the larger harness wires pointed in are green, yellow white, black ,yellow black, and green white

on the smaller one blue, green white, green, black red

[Hijacker]

You just need to cross referrence the wiring diagrams for the Q45 and the S14 SR. While the colors may not match up, the pinouts will.

http://srownersclub.com/faq/site/q45.doc

Q45 referrence:

4-pin plug (as if you're looking at the pins. This will be backwards from HT's write up as the have you look at the wire side of the plug)

top1 23 4

1- Coil 12- Coil 33- Coil 24- Coil 4

5-pin plugtop1 23 4 5

1- Coil 32- Coil 13- Coil 44- Coil 25- Ground

S14 Ignitor:4 pin plug

top1 2 3 4

1- Coil 12- Coil 23- Coil 34- Coil 4

5-pin plug

top1 2 3 4 5

1- coil 42- coil 33- ground4- coil 25- coil 1

On the Q45 ignitor 5-pin plug, HT only lists the ECU pinout. I mated the ECU pins to my JDM S13 chart, so I'm certain they're accurate for you.

[n1smodr1ft]

wow thank you soo much... who ever did my harness is crap because coil #3 on the 4 prong harness wasnt even hooked up.... looks like im gunna have to go digging..

[n1smodr1ft]

well as it turns out i dug a little further into the loom of wires to track down my missing coil wire. However I found about 6 wires that were cut!! now this harness was supposed to have been professionaly wired. From what i understand it was a ka24e harness that was made to work with an sr. do you know anybody who has done this before? i searched and found nothing.

[n1smodr1ft]

wow i figured it out... thank you for your help this is why i love NICO

[Hijacker]

I have converted plenty of KA24DE harnesses to work with SRs, but never had used KA-E harnesses.

What exactly was the main issue? Just those cut wires? And who did your wiring so we can tell people to avoid them in the future.

[n1smodr1ft]

yeah thats the thing i bought the harness from some one and they "forgot" who did it.... well i it turns out i wired the ignitor wrong... would this create a no spark issue or would it just fire at the wrong time??? i still have no spark... im on my way to wire it correctly now. I basicly had to pull the whole harness apart to trace the wires and they change color about 3 times each... waht a mess!

[n1smodr1ft]

ok new update assuming the firing order from the front of the engine to the rear as 1234 have spark on 2. I know the wiring from the ecu is good on the 5 prong i followed up each wire to the ignitor, however i do not know if the 4 prong is correct. do you happen to have the pin out on the connector that actually plugs into the coil harness?

[schanne]

Sounds like time for a new harness.

NEW= Piece of mind

[n1smodr1ft]

haha yah i agree but its almost done sooo...... all i need it that pin out.

[Hijacker]

This one is gonna be a bit tougher as I don't have any of my hand written notes, and I'm not 100% certain the S14 pinout is identical. This is just one of those things I don't have an S13 manual for, but I've converted a few KA harnesses and have written down. But it's all at the shop

The S14 manual lists the pinout for the EFI side of the plug as:

top1 2 3x 4 5

1 - main power (switched 12v, usually branches off the B/R ecu power wire)2 - R/G Coil 43 - R Coil 34 - R/W Coil 25 - R/L Coil 1

Personally, to be crystal clear on it, I would do a continuity test on your coil pack subharness to verify the pins properly. The right pin looking into the coil pack plug is the wire that goes out to the ECU through the subharness plug.

I've seen on S13 coil pack subharnesses an extra ground going into the plug where I marked x, but there is no corresponding ground wire on the EFI plug.

[n1smodr1ft]

wow thank you im tommorrow ill go check what i have and see if it matches up.. if you end up finding the s13 pin out i would be greatful. ill keep ya posted and let you know if it get this thing running

thanks again,-rob

[n1smodr1ft]

i havent had a chance to rewire the other side yet... and im not sure if its incorrect yet, but if it was incorrectly wired what would happen? could it possibly create the condition i have (only sparking on 1 cyl)? if not is it also possible the ignitor is damaged? i would think it would just fire the wrong cyl at the wrong time?

[n1smodr1ft]

how do i do the continuity test?

[n1smodr1ft]

ok soooo i followed the wires from each coil to the plug, then wired them accordingly to the ignitor.... still no spark... wtf......

[n1smodr1ft]

ok so this wire is the ecu return or whatever i have spark on #3.... and its not plugged in to anything!!! so i need to know where this wire goes.