Jump to content
Sign in to follow this  
05sti

Wideband o2 sensor wiring directly to ecu board?

Recommended Posts

I have a g4+ almost ready to go into the car. I am planning out how to run the wires and I purchased a male connector that will fit directly into the supplied "wideband' 4 pin female end on the ecu. I just can't find which pins correspond to which wires for the wideband. Does anyone have a diagram of this? 

Share this post


Link to post
Share on other sites

You are going to need to be a bit more clear.

What ecu do you have?

I'm going to assume it will be going into a 2005 Subaru STi.  What market? What engine?

Please elaborate a bit more on, "I purchased a male connector that will fit directly into the supplied "wideband' 4 pin female end on the ecu"

Share this post


Link to post
Share on other sites

g4+ here's the 4 pin connector I am referencing, USDM ej257. I have the male end of this 4 pin connector- I just need to wire up the 4 wires in the right spots. Thanks!

o2 port 2.jpg

o2 port.jpg

Share this post


Link to post
Share on other sites

On that connector bottom 2 pins are ground

Top right is 14V

Top left is AN volt 11 input.

 

It would need a external wideband controller to run the sensor and then AN volt 11 can be set as Lambda.

 

Share this post


Link to post
Share on other sites

I highly recommend the LINK CAN-Lambda. Much more precise as the analog ones. I've seen huge errors in readings on some analoge controllers. Especially the AEM uego to name one.... 

Simon no wrong inhibitions to recommend one of the LINK product. They are more than great! ;-) 

Share this post


Link to post
Share on other sites

If my sensor has it's own power already, do I just have to run a 0-5v output from the sensor to the input on the board? I have positive 0-5v output and negative 0-5v output. One of these would be the AN 11 volt lambda?

 

 

Share this post


Link to post
Share on other sites

I have the whole AEM uego X wideband kit. It has it's own power and ground and then the various different outputs seen in this PDF on page 3, sorry for not linking it in the previous post I meant to! http://aemelectronics.com/files/instructions/30-0300 X-Series Wideband UEGO AFR Sensor Gauge.pdf

 

It seems like I would run the white wire 0-5v analog output to the top right of the connector on the ecu and not have to run anything else because I already have it all wired into the car?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

×
×
  • Create New...