Edmund Turner Posted September 10, 2021 Report Share Posted September 10, 2021 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. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 10, 2021 Report Share Posted September 10, 2021 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. Wildt267 1 Quote Link to comment Share on other sites More sharing options...
Edmund Turner Posted September 10, 2021 Author Report Share Posted September 10, 2021 Thanks for confirming this Adam. Excellent support as always. Quote Link to comment Share on other sites More sharing options...
Edmund Turner Posted September 11, 2021 Author Report Share Posted September 11, 2021 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? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 11, 2021 Report Share Posted September 11, 2021 That error relates to the IPE pin at the sensor rather than the power supply to the controller. I havent seen that error before so dont know much about it. Is the sensor new? Quote Link to comment Share on other sites More sharing options...
Edmund Turner Posted September 11, 2021 Author Report Share Posted September 11, 2021 Yes, this is a new CAN lambda, LSU 4.9 o2 sensor and G4X pnp ecu. All installed together yesterday. I just started the motor and its idling good now. I just noticed the eror. Should I try another !2V source ( with fused relay)? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 11, 2021 Report Share Posted September 11, 2021 If the error comes up regularly then yes I would try a different power supply. Quote Link to comment Share on other sites More sharing options...
Edmund Turner Posted September 14, 2021 Author Report Share Posted September 14, 2021 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 Quote Link to comment Share on other sites More sharing options...
koracing Posted September 17, 2021 Report Share Posted September 17, 2021 My guess would be a bad CAN Lambda device. Is it feasible to try another? Quote Link to comment Share on other sites More sharing options...
Edmund Turner Posted September 17, 2021 Author Report Share Posted September 17, 2021 We are waiting to swap to another CAN lambda to test as as the current one is reporting errors of 'over and under voltages' randomly. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.