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To ground. To +12v. To O2 sensor. 1 st ATTEMPT: DIDN’T WORK. At this point, I came inside and tried to find which wire on the sensor would be the sensor signal wire. I found nothing and emailed the list. NADA!!. Harness at ECU. To ground. To +12v. To O2 sensor.

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To ground

To ground

To +12v

To O2 sensor

1st ATTEMPT: DIDN’T WORK. At this point, I came inside and tried to find which wire on the sensor would be the sensor signal wire. I found nothing and emailed the list.


To ground

NADA!!

Harness at ECU

To ground

To +12v

To O2 sensor

2nd ATTEMPT: I think the JDM ECU had me screwed up. I tried to use an ohm meter and the BGB to determine which wire was for the O2 sensor. I found nothing using this method.


To ground

To ground

To +12v

To O2 sensor

3rd ATTEMPT: Decided to take a risk and hook the meter up to the other colored wire on the sensor (it is actually white, rather than gray). Still nothing…. In a fit of frustration, I went back to square one, but omitted something……….


To ground

Ground in engine bay

To ground

To +12v

To O2 sensor

4th ATTEMPT: So, I went back to the first wire, but forgot to tape up the white wire. The meter was working intermittently, so I had an idea. I intentionally grounded out the white wire and it lit up, so I properly grounded it and went for a test drive. It went all the way to rich at WOT, and the leaner side of STOICH at 0% throttle. Now, the paper said it should go to lean at 0% throttle. If that is correct, I suppose there is some troubleshooting to do. If it would vary, then I guess it’s okay.