Hi,

so i have a jdm H22A and im putting it in my 94 honda accord ex

we are curently at the process of fitting the wireing harness to the engine (f22b1 harness to H22a motor)

i realized that the ecm i have has three connectors and my stock ecm has only two but the two stock connectors fit in the 2/3 connectors on the new ecm is this ok?

also the orginal prelude wiring to the ecm has alot more pins going into the ecm what should i do?! i know i have to hook up a knock sensor but are there other wires that need to be swapped?

i was never aware of this situation when it came to swapping ecm and harness all i was aware of was the knock sensor connection

i will post pictures later there on my phone right now

 

what ecu are you using ? post the number...should have P13 in it

 

Its the p13, im prity sure its a JDM p13 so i dont know if that makes a difference.

Biggest concern is on the p13 connectors theres alot more wires going to the ECM then the acoords connector. isnt this going to cause problems with the ecm? becasue it wont be sensing certain componets i thought this was mainly plug and play.

 

I'll be more in a position to help when I know what kind of ecu you have. My guess is that your ecu is obd2 but I won't know until I know what the exact number is.

 

Heres the exact number on the side of the ecm

37820-P0F-004

 

is your car an automatic ?

 

I'm finding different answers when I google the ecu's number. Pictures would probably help a lot

 

I'm having a hard time believing he only has two connectors going to his existing ecu. It makes no sense at all. I'd love to see pictures too.

 

The Car is Manual

Original ECM and connectors (Accord)










New JDM Prelude ECM and Connectors

 

What's the ecu number of your original ecu ?

 

So just to let everybody know i was wrong... i have a P0F ecu not a P13

came across a thread talking about it so i think im set on what to switch and what not to switch

it looks like theres only two pins i have to switch for the ecm to work properly i believe its pin A6 with A11 (not positive on that)

so i will give it a try once the engines ready to go and post back

 

That's the ABS control unit dude. lol Your ECU is under the passenger side kick panel.

 

LOL i was like wtf is that

 

I believe it actually directly states ABS control module on the label.

Yep. It does, no hard feelings man. Just have to pull up your carpet a little more. lol

 

All of my 4th gens have been '91 and none were the SE so I never had abs in mines.

 

Hahaha! wow well that makes alot of sense lol its weird how the plugs are the same even though its not the ecm. well thanks guys! haha im new at swaps and ive never had to get to my ecm so i never would of known