I'm trying to get my secondaries working on my 94 h22a. I got everything hooked up but it's not working so i'm just curious about the wiring. It's a 2 wire plug, pink wire and a black with yellow stripe. Now the pink wire goes to pin 17 on the ecu. and the black with yellow stripe is 12v switching. Now i'm trying to figure out when and what voltages i could check for?. Cause when i checked mine today i noticed the black w/yellow was putting out 12v at idle and the pink put out nothing, and when i brought the revs upto 5k nothing changed? I would like to know what kind of voltages the wires should have, and what changes at 4600rpm when the solinoid opens. Thanks in advance for any help.

A scan of the troubleshooting section for iab from the helms would help, mines still on backorder



[Modified by Alstare, 11:40 PM 9/25/2002]

 

You already figured out the power source for the solenoid. When the car is running, the PCM grounds the PINK wire, causing the solenoid to OPEN and allow engine vacuum the pull the secondary valves closed.

A simple way to test this solenoid would be to turn the ignition to the ON position, and ground the PINK wire. You should hear the solenoid click. If not, you have a bad solenoid (my JDM H22A had a bad solenoid.)

An easier way to find out if this is working is to have someone start the car, and you can just LOOK AT THE VALVE. As soon as the engine is started, you should see the secondary air intake bypass linkage move, pulling the secondary throttle plates closed.

I've never tested this, but supposedly around 5000 RPMS, the PCM opens the PINK wire ground. This causes the solenoid to close, stopping vacuum from reaching the IAB valve, which then opens up the secondary air valves, allowing for more air flow.

Hope this answered your question.

 

Thanks man that is exactlly what i was looking for, very informitive. Now tommorow i'll give it all and try and see what I'm dealing with. Thanks