I have a bad O2 sensor harness and want to bypass the factory portion and replace it. What I see is a black one, a dark green and orange one, a black and light blue one and an orange and black one. I need to know which ones of the four go to the PCM and which ones go to the PDC. I have already had to replace the entire engine harness and that worked out great. Thanks for any help.

Jim

 

I would imagine the service manual would tell you? Not sure where there is one for 2nd gen durango though.

 

I have the service manual and the schematic but I'm not real confident in my ability to interpret it. I guess I was hoping someone with more experience with wiring would put their 2 cents in. I appreciate your response, dj.

 

If you post the schematic maybe we can help interpret it. Not everyone has a schematic to reference.

 

Thanks, Dan, for that reminder. I'll try to post it so others can use it as a reference, at least for this thread.

 

I can't open your link. It comes up with a Google Profiles login page but that's it.

You can attach files directly using the "Go Advanced" feature. Just post the specific page(s).

 

DakotaSchematic05132014_00000_zpsa86eff65.jpghttp://i1360.photobucket.com/albums/r651/Vim_Njicki/DakotaSchematic05132014_00000_zpsa86eff65.jpg

 

It looks to me like i need to rewire the BK/LB and the OR/BK. is that correct? I keep receiving mixed signals from the diagnostic program. either too hot, too cold or no signal at all.

 

Just follow the lines.

O2 sensor Pin #1, dark green/orange tracer to the PDC via joint connector #2.
O2 sensor Pin #2, black, to ground at G107 (upstream) or G103 (downstream).
O2 sensor Pin #3, black/light blue tracer, sensor ground at PCM, Connector 1 Pin 4.
O2 sensor Pin #4, orange/black tracer, sensor signal at PCM, Connector 1 Pin 25 (downstream), for the upstream it would be orange/tan tracer, sensor signal at PCM, Connector 1 Pin 24 (sensor signals)

Gxxx is the location of the grounds.
Cxxx is a connector.
Sxxx is a splice.
A "joint connector" is just where a bunch of wires tie together.

 

Thank you, Dan, for the clarification. I needed those letter designations delineated. My brain was making a mountain out of a molehill. "Ground" simply means any connection to bare metal, yes? Still nervous about doing it but it has to be done. Thanks again. I'll let you know if it works.