delete :)

Hello guys, I work on my project EJ9 H22 , mechanical things are complet, but now ... i have small problem, and it is with harness, can you help me with this ?

Here is it

What exactly is the problem you are facing?

Hmmm exactly ... ehm, this is my first swap, and this is not easy swap so exactly, I would like to get help with complet harness, if it is possible or if is somebody helpful.

Do you know what your engine harness plugs go to? (Ex. Alternator plug, Distributor plug, etc.) Never did an H swap but there are some serious mods needed to the harness.

haha, yes i know it now but now, I must complete this project ...

I believe most of the issues is getting the H series plugs onto your D series harness. Check out ffsquad.net

thanks for this page, great information, but only about B series

Copied for your reading pleasure.

WIRING INFORMATION: MERGING OBD1 CIVIC HARNESS TO H22A ENGINE:

To referance to, here is a picture of the factory EG OBD1 (92-95 pinouts). For EK information, I highly encourage to post that!

This picture is from one of the old school tech sites (which I cannot remember, sorry)



- Take off and mark everysingle harness connectoron where it came from/where it goes from both H22Aand stock civic engine. Make sure you label them of where pulled the plug from! This will save a TON of time!

Mount Civic harnesson H22Aand measure/modify wire to be lengthened/changed as follows:

- Change fuel injector connectors to H22Atype and add resistor packfrom H22Aharness to Civic harness(see diagram below)
- Extend Alternatorwires to reach the H22Aalternator(match the pinouts on the plug)
- Lengthen wire that goes to the starter solenoidon starter
- Attach reverse light sensorwire to the new H22Areverse light sensorwire

O2 sensor -add 3 wires to O2 sensor and follow o2 wires and change to Prelude O2 sensor connector. And wire the following:

This only applies to those who have a CX model Civic, or if you use a VX engine harness in a VX! If you have a 92-95 EX/Si/DX, this is NOT required. All OBD2 Civics also do not require this

WHT - WHT/RED wire goes to D14 which is O2 SensorInput
BLK - ORG/BLK wire goes to A6, which is Heater Control
GRN - GRN/WHT wire goes to D22 which is Sensor Ground
BLK - YEL/BLK wire goes to A25 which is Sensor voltage(you can also splice into the power junction harness at the driver side shock towerharness)

I have taken pictures to clear up more information on the O2 sensor. I will post this tonight.

If you have a VX modelCivic, if you USE a different engine harnessthan the factory VX harness (such as an EX/Si, or DX engine harness), you need to perform the VX O2 sensorfix.

You can do this by simply removing the ORG/BLU wire pin from the 4th VX plug:



and moving it to the missing pin mating up with the WHT wire.


VTEC wiring:This applies to DX,LX,CX models only in 93-95! If you have any 92 model Civic, or any 92-95 EX/Si, you do NOT need to do this

There will be two available slots at the shock towerharness. You just need to simply salvage a male and female pinfrom an unused plug, and add the pins to the connector for the factory look.

- Add one wire from the VTEC Solenoid(grn/wht wire) to the A4 pinout at the ECU. Add the pin to the shock towerharness, and female pinat the female shock towerconnector.

- Add one wire from the VTEC Oil pressure sensor(blk/blu wire) to the D6 pinout, and the other wire which is VTEC oilpressure ground. Simply splice (while soldering!) this to the thermostat ground on the engine harness.

thanks to Audiofuct for finding this mistake

Knock sensor wiring:(mounted at the rear of the engine near the cylinder head) Do the same for the male/female pins at the shock towerharness. There will be one available slot for this. Wire this from the KS to the D3 pinout (for OBD1)

Air Intake Bypass solenoid (secondary butterflies)

- Sensor voltageto the A25 pinout (or splice into the Yel/Blk wire connectorat the driver shock towerharness.
- ECU Signal leading to A17 pinout on ECU

EGR (Exhaust Gas Recirculation) System:Applies to all model civics except VX using the VX engine harness. If you do not use the VX engine harness in a VX, then you need to do this!

- EGR lift valve solenoid- sensor voltage(A25 pinout) & ECU signal to A11
- EGR lift sensor - sensor voltage(A25 pinout), ground (D22 pinout) & ECU sensor signal to D12

Note: EGR is only to be wired up if you also use a P13 ECU. If you use a P28, P72, etc, then the ECU does not look for the EGR and therefore the sensor will be useless. So don't waste your time if you use another ECU.

FUEL INJECTOR WIRING:If you use the factory PEAK AND HOLD injectors, you WILL need a resistor box for your application.

First of all, a resistor box looks like this:




You should have four black wires, and one red wire (or four of the same color and one different color):

Here is a diagram (thanks to Hondata):



Now time to MOUNT the engine harness on the motor! I recommend mounting the engine harness with the engine out of the car. It's much easier to route and work around. Do as follows to check and make sure everything is connected:

- Injectors first
- IACV (idle air control valve)
- Alternator
- IAB (secondary butter flies)
- IAT (intake air temp) sensor
- Oil pressure sensor(rear of the motor)
- Knock sensor
- TPS (Throttle Position Sensor)
- MAP sensor
- Distributor
- ECT (engine coolant temp) sensor
- Water temp sending unit
- VTEC Oil Pressure sensor
- VTEC solenoid
- Radiatorfan switch (thermostat housing)
- Engine harnessground (10mm bolt onthermostat housing)
- ESS (electronic speed sensor)
- Reverse light sensor

NOTE: Also, to some H22's, they come with additional sensors that is not required. Mine came with a bunch that wasn't needed at all. This is one:



And you can also remove this and just connect the hose from the FPR directly to the intake manifold:



When you throw the motor in, finally, make sure the engine ground from the frame rail is grounded to the motor!

thank you very much

I started with the wiring

looking over the stuff that has been written . one question has not bee brought up . does your state have a inspection law that you will have to worry about ? sorry what year is the car 96-98 or 99-2000? i done this swap for a few people in my day . you dont need to run the resistor box if you use the new injectors ,which is high impedance already. the reason i ask about the inspection , if you dont have to worry about such things . then you can use the EX or SI harness on you h22. just need to extend a few wires and she will drape on . if you have to worry about such things , you will need to follow some more steps on the swap to pass.

Hello my car is 96-98, and i will use original H22a5 injectors, so what would you advise ?

Hello, please can somebode help me wit this stecker its from EJ9, in the interior ? i wont some scheme or something have somebody ?