donovan905 Posted October 14, 2022 Report Share Posted October 14, 2022 Wiring wideband afr to an volt 7 through rear o2 sensor harness 2005 forester xt into the g4x confusion with the ground point for the brown 0-5v analog output negative my tuner sent this my question is where to ground to "ecu ground" could this be expansion 1 ground signal or something like taping into D3 D7 B12 or any of the ground similar or do i just ground to the ecu chasis itself meaning ring terminal under the securing nut of the ecu Thanks for the help in advance First make sure the wideband gauge itself reads accurately/reasonably. Next, the AE wideband needs 12v switched power, and battery ground The brown wire also need to go to ground; ecu grounds (not sensor ground) Lastly, the white wire goes to analog volt Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted October 14, 2022 Report Share Posted October 14, 2022 Ive got the same Wideband and ive just wired it into the CAN. Much better and easy to configure, also Im told more accurate. The ground you on about if its the black is back to battery, but the brown for the 0-5v i originally put that to sensor ground on the ecu. Quote Link to comment Share on other sites More sharing options...
donovan905 Posted October 14, 2022 Author Report Share Posted October 14, 2022 Thanks for the info are you saying originally you went to sensor ground as in to the o2 sensor ground and did something else or you are on a sensor ground? Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 14, 2022 Report Share Posted October 14, 2022 Ignore your tuners instructions, the brown wire should go to sensor ground on the expansion harness. But as Steve Bull says, it would be much better to use the CAN bus rather than the analog signal. For this you connect AEMnet +/- to CANH/L on the ecu CAN port. Quote Link to comment Share on other sites More sharing options...
donovan905 Posted October 14, 2022 Author Report Share Posted October 14, 2022 again thanks for the info guys quick question about the signal ground on expansion I have that tied to a continental ethanol sensor may i share that with the wideband or a better question is and how many times can it be shared? Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted October 15, 2022 Report Share Posted October 15, 2022 If you look at the pin out diagram for your ECU then it will show the sensor ground(s). The xtreme has two i think, one for each A & B connector. So ive always tried to have the ground for a senor and the sensor input on the same connector. At one stage i was using all the inputs and each one, where needed, had a sensor ground. So you can have more than one sensor on each ecu senor ground. Im not 100% sure but i think the reason for using the ecu sensor ground it so you get a stable common earth that allows a better reference for the input and ecu. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 15, 2022 Report Share Posted October 15, 2022 You can splice the sensor ground to as many sensors as you like. Quote Link to comment Share on other sites More sharing options...
Hoozel Posted October 28, 2022 Report Share Posted October 28, 2022 came across this post, Thank you for the info Adamw. i already have my UEGO wired into expansion sensor wiring and the car is about 80% done street tuning. if i wanted to switch this to Can connection instead what would i need to change in my G4X software for it to use the new connection instead? Quote Link to comment Share on other sites More sharing options...
aerace_fab Posted October 28, 2022 Report Share Posted October 28, 2022 white/black is CAN HI green/black is CAN LO In the software go to ECU CONTROLS> CAN SETUP>STREAMS Load stream> select AEM X-Series UEGO Gauge Receive.lcs Then back to "MODE" Select can 1 or 2 whichever you're using. Mode > user defined bit rate 500kbit/s Channel 1 or any spare channel "mode" > Receive user stream 1 CAN ID = 384 Format = extended. analog inputs > Lambda 1 - select "Link CAN" Leon5678 and Gabrielphv 2 Quote Link to comment Share on other sites More sharing options...
Alex_350 Posted December 3, 2022 Report Share Posted December 3, 2022 Would the same procedure work if I wired the AEMnet/CAN wires directly to the ODB port. I have a 2003 Nissan z33 import. If so, would I need to wire brown to ODB ground as well as 6/14 High and Low. Or is the OEM ODB port redundant now. I have the Xtreamx 350z pnp. Quote Link to comment Share on other sites More sharing options...
aerace_fab Posted December 4, 2022 Report Share Posted December 4, 2022 Your easiest solution is to use CAN1 expansion on the ECU it's self. Quote Link to comment Share on other sites More sharing options...
Alex_350 Posted December 4, 2022 Report Share Posted December 4, 2022 Okay thanks, I will look for one for sale. Is there a reason why the AEM would not connect in this way? Cheers.. Quote Link to comment Share on other sites More sharing options...
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