Kenian

Hi Guys, i am trying to get the wideband data from my AEM X series UEGO into my link G4 over CAN. It is a link g4 plugin for a 96-98 honda (HC96). I have used the pre made loom from NZEFI which i have plugged into the CAN 1/RS232 port on the ecu board. The guy @ NZEFI said not to bother with terminating resistors if the lead is under 1m which it is so i have just wired the can high and lo from the gauge loom directly to the corresponding high and lo on the loom plugged into the ECU - i have not used terminating resistor/s. The AEM wideband has preset can streams in PC link so i have used that and followed the exact instructions on how to setup this gauge for CAN from the help section of PC link. also the CAN ID on the gauge is set as 1. I have attached the settings used to try set this gauge up which is not working. Can anyone see anything obviously wrong with what i have done in PC link or is it the fact there is no terminating resistor/s that is causing this issue? I get the feeling i am not setting up the CAN ID's correctly possibly?? Any help on this much appreciated.

Ok cool thanks for clearing that up Much appreciated!!

Thanks for your reply Adam. Just to clarify are you saying that the AEM can wiring should already have the terminating resistor in the harness or I will need to add in myself? Thanks Kenian

Hi Guys, Just trying to figure out how to wire my new AEM X series wideband into my G4+ using the CAN output from the wideband controller. I am a complete newbie in regards to the CAN network. I am looking at purchasing the below harness from NZEFI but have a few questions:- https://www.nzefi.com/product/nzefi-link-g4-g4-plug-ecu-can-cable/ I am a little bit confused as to where the power and ground come into the picture? I was under the impression i could just wire the CAN High and CAN Low coming out of the controller to the CAN High and CAN Low coming out of the ECU harness (little white plug). Does the CANBUS system need power to work? If you have a read of the NZEFI link it says " In order to supply power and ground to the devices(s) on your CAN-bus, power and ground wires are also included in the loom in the form of a flying lead." What exactly does it mean by supply power and ground to the devices on your CANBUS? The wideband is already supplied with a power and ground. Also do i need to employ a 120 ohm terminating resistor or is this only used when you create a BUS with more than one device on the BUS? I have looked at the wideband manual and done a bit of Googling but had no luck finding a meaningful answer. Any help much appreciated. Thanks Kenian

I beleive that this is correct - just like a sr20DE i setup recently both trig 1 and trig 2 are driven off the CAS that is located inside the distributor cap and no crank trigger is needed. Ive just had a quick google on trigger setup for this engine and there seems to be alot of info on Megasquirt formums regarding trigger wiring etc. You can most likely get your answers off that.

Youll need to wire the 0-5v output from your wideband into pin 13 of your ECU (AN Volt 3) which is currently setup for NB Oxy and then got to AN Volt 3 under analougue inputs and change the function from "NB Oxy" to "Lambda 1" and then choose the calibration from the presets or input the calibration details from you your wideband controller. or you could use the AEM X-series UEGO that has CANBUS capability and wire it into your ECU over CAN and the link software already has this device setup as a preset stream. E36+.pdf the pin location etc is all in the attached manual for your ECU from page 17 onwards.

Hi Adamw, I have just stumbled across this thread while searching for a solution of running out of inputs on my ATOM 2 G4+. After doing a bit of research I also found the autosport lab analogx 4 channel analog to can interface and am wondering if I can use this device and my 1 can channel to input the below?? 0-5v output from my knock monitor pro knock detection kit Oil pressure sensor (you have confirmed above this is possible) Also probably need a wheel speed sensor in there. What are the limitations on inputs using the autosportlab device and my link atom? By the sound of the above quoted comment this analog to can option doesn't have the flexibility of a normal an volt input? Any help on this much appreciated. Cheers Kenian.