Joined: Sep 2019

Posts: 1

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From: fl

Cut white wire I am thinking is the 1st upstream O2 sensor connection

Cut white wire I am thinking is the 1st upstream O2 sensor connection



I can find the harness connector for the 2nd oxygen sensor on my engine but I can't find the harness connector for the very 1st sensor. I see the sensor but it is not connected anywhere. Any photo to help?

According to Mitchell the 1st upstream sensor wire is white and the 2nd upstream sensor wire is red with blue stripe. Even though the male plug for the 2nd sensor on my harness is broken I can identify it next to the plug for the IAC. I also notice a single white wire (cut) on the part of the harness going to the distributor connector, alternator connector and up to the coil & MAF connector. I am assuming this cut white wire is the 1st upstream O2 sensor connector but prefer to get someone confirmation before I damage my ECU (1994 SC300 2JZ-GE non-vvt-i in a 1992 Toyota Cressida).

I am attaching two photos with the cut white wire circled in red. Any help would be appreciated