Jump to content

CAN Lambda supply via CAN2/OBD pcb connector.

Edmund Turner

Recommended Posts

Hi, quick question, I am installing a Link CAN lanbda into vehicle with a Mitsu Evo 9 PNP G4X ecu. I usually wire it up as recomended in the picture below. However, just to clarifiy , can I also power the CAN Lambda with drectlly from the CAN2/OBD PCB connector that is connected to the ecu?  Probably not a good idea but just wanted to check.




Link to comment
Share on other sites

Although that 14V pin was originally only intended for low powered devices such as dashes, it should be ok on that particular ECU, I just looked at the PCB design and it has a decent sized track to that pin. 

Our recently released plug-in ECU's have changed to a 4 pin CAN connector with a proper protected 12V supply to allow direct CAN lambda and/or dash plug and play, but it will take probably a number of years before that change trickles through to the existing plug-in designs.   

Link to comment
Share on other sites

Hi Adam, just to report back. CAN lambda is connected and reading as exepected. However, there is a warning of '46 IPE overvoltage'. THis is probably because I used the 14V from the CAN 2/OBD from the PCB.

I am leaning towards installing a relay to power the Lambda, unless the over voltage is not an issue for the LINK CAN lambda?


Link to comment
Share on other sites

HI ,

To summarize, Initially I installed a new CAN lambda with new LSU 4.9 sensor via CAN2 PCB connector in a new Link Evo9 PnP G4X ecu. Lambda is reading correct but reporting '46 IPE overvoltage' consistently when the motor is started.   

I then moved the power supply & ground for the CAN lambda from the ecu's CAN 2 PCB connector  to a switched relay ( wired exaclty like the  recommended diagram) . I have installed a few CAN lambdas in the same manner but this is the first time I have seen this error. 

Now Im getting a consistent - '48 IPE overvoltage error now'. I have attached the log for reference.

What could be the issue, any suggestions? 

Lambda error - 2021-09-14 6;10;09 pm.llgx

Link to comment
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.

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.

  • Create New...