To start off I have a 90 CRX Si with a B16.

I'm having an issue with CEL 14 showing up on 2 good known IACV's. I'm starting to think I have a broken wire somewhere and want to verify the wiring from the sensor to the ECU.

From what I know the IACV goes to A17(Blu/Yel) and A11(Blk/Yel). I did however do a wire tuck and shortened a ton of wires. I'm noticing that there is a an extra Blk/Yel wire on the drivers side round plug that would have been used for a dashpot sensor, so perhaps I mixed match the wires up some how?

My questions is this, Do all the Blk/Yel wires supply constant voltage to the sensors, or are they switch at the ECU? Also, if my wiring is wrong, can you verify what I need to change?

Thanks in advance.

 

The iacv and the alternator both share the same black/yellow wire. Did you remember to splice them together?

 

Not sure, I'll have to check that tonight.

 

all of the black/eyllow wires are power - at the IACV you should have a blue with yellow stripe and black/yellow - your Si engine harness should have one connector that isn't used - it went to the Fast Idle Control Valve on the back of the intake manifold - it has a black/yellow and a solid blue wire - neither of these are needed - make sure you have the blue/yellow and not the solid blue going to the IACV

 

I think that may be my problem, do you know if the IACV wire runs to the drivers or passenger side plugs?

 

fixed the problem, I did end up wiring the IACV to the blue wire on accident.

thanks for the help.

 

do you know if the IACV wire runs to the drivers or passenger side plugs?
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