Swap Question
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Turbo Guru
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Swap Question
Ok, so I swapped my d17a1 out of my dx for a d17a2 and swapped out the engine wiring harness and ecu. So, Anyone that's done this swap probably knows that the o2 wiring for the secondary is on connector E, not connector A.
Connector E is not part of the engine harness, but it's inside the car (and on the ex, part of it must run out to the engine bay for the sensor. Anyways, I need to know where exactly all of the four wires on the sensor plug need to go.
Now, the heater wire and the signal wire go into pin E. The signal wire should go to the wire for the ignition signal. The heater wire connects into the heater wire pin, obviously.
That leaves two wires, a green/yellow and I can't remember what the color is of the other. Anybody got any insight on how this needs to be wired up exactly?
And I know I posted this in the tech forum but I got NO answers at all. I wouldn't be posting this here if it wasn't necesarry.
Connector E is not part of the engine harness, but it's inside the car (and on the ex, part of it must run out to the engine bay for the sensor. Anyways, I need to know where exactly all of the four wires on the sensor plug need to go.
Now, the heater wire and the signal wire go into pin E. The signal wire should go to the wire for the ignition signal. The heater wire connects into the heater wire pin, obviously.
That leaves two wires, a green/yellow and I can't remember what the color is of the other. Anybody got any insight on how this needs to be wired up exactly?
And I know I posted this in the tech forum but I got NO answers at all. I wouldn't be posting this here if it wasn't necesarry.
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Turbo Guru
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Not really, I have a helms. I uploaded the pinouts and posted them in this forum. I am almost positive that I have the wires right. I searched on honda tech and saw a really good post about obdII secondary o2 sensor wiring and mine matched up with it but I'm still getting the code.
I tried all of the troubleshooting steps and everything seems to check out ok. It tells you to check one of the under dash fuses but I obviously don't have it running through a fuse. It also tells you to repair any opens in the wire but all of my connections are secure. I'm totally lost here.
I tried all of the troubleshooting steps and everything seems to check out ok. It tells you to check one of the under dash fuses but I obviously don't have it running through a fuse. It also tells you to repair any opens in the wire but all of my connections are secure. I'm totally lost here.
Thread Starter
Turbo Guru
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Joined: Oct 2002
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From: Rockville, MD
Rep Power: 350 










Thank heavens for Helms. I figured it out finally. On the ex, the oxygen sensors themselves use 2 female wiring harness clips. The dx/lx use a male clip for the primary and a female clip for the secondary. After putting on the vtec engine harness, the primary sensor wire harness off of the engine wire harness itself used a male clip for the primary. So they were basically reversed. I had the primary and secondary switched. So I had to reverse the clips and voila, no more CEL 
Tuning to come tomorrow. Check back for dyno #'s.

Tuning to come tomorrow. Check back for dyno #'s.
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