Hi all,
I have an S40 Pro and an AEM X-Series UEGO AFR sensor controller gauge (30-0300). I wish to wire the AEM into the ECU for reference.
There is a 2 pin connector on my DTA engine loom for the wideband and I'm told that pin 1 is signal and pin 2 is sensor ground. Looking at the AEM wiring diagram (please see attached), it looks like the brown wire is the sensor ground so I'm assuming that needs to go to pin 2 on my connector, but which AEM wire is the signal I need to wire to pin 1?
Would also appreciate any advice on which lambda parameters to set in the software to make this work (the AEM uses a Bosch 4.9LSU sensor if that helps).
Many thanks
AEM Wideband into S40 Pro
Re: AEM Wideband into S40 Pro
White - 0-5v Analog Input.
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- Posts: 4
- Joined: Wed Oct 07, 2020 2:55 am
- ECU Model: S40 Pro
- Distributor: MEF Motorsport
- Firmware Version: 79.06
Re: AEM Wideband into S40 Pro
Easy as that, thanks very much.katana wrote:White - 0-5v Analog Input.
I'm assuming "4 wire Bosch" is the correct voltage scale in the software? Or is it just a case of trial and error until the ECU and gauge are reading in sync?
Thanks again
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- Posts: 1623
- Joined: Fri Feb 28, 2014 1:03 pm
- ECU Model: S40 Pro
- Distributor: DTA
- Firmware Version: 79
Re: AEM Wideband into S40 Pro
No. You'll need to find the output from the AEM and fill that in on the Lambda Parameters page.Liam wrote: I'm assuming "4 wire Bosch" is the correct voltage scale in the software? Or is it just a case of trial and error until the ECU and gauge are reading in sync?
Thanks again
Re: AEM Wideband into S40 Pro
The '4 wire Bosch' isn't a wideband sensor in the truest sense - it was a more of a accurate narrow band with more scope either side. Early Motec's were about the only ECU's that natively understood its output & even then only for data logging purposes. All modern wideband sensors are 5 wire and need a controller.Liam wrote:Easy as that, thanks very much.katana wrote:White - 0-5v Analog Input.
I'm assuming "4 wire Bosch" is the correct voltage scale in the software? Or is it just a case of trial and error until the ECU and gauge are reading in sync?
Thanks again
Re: AEM Wideband into S40 Pro
Make sure the Brown wire is connected to the ECU Sensor 0V. I didn`t at first and the ECU read differently to the gauge.
As soon as I wired them together the readings were identical.
As soon as I wired them together the readings were identical.