Kpro 4 lost bluetooth connection and digital wideband input

[jbt]

Datalog with wideband not working and calibration attached. I also have an old datalog with the wideband working that I can't attach as it's too big.

jacob klar hos john.kal

WB not working 2.kdl

[Spunkster]

It is showing a reading form the digital input. It is a constant 10:1 af ratio, which might mean it is pegged rich, or that the output is not working. What voltage is coming out of the wideband controller on the analog output?

[jbt]

During cold startup I get 1.2v from analog output when I measure with a multimeter. The kmanager show 0v. That running on e85 fuel.

[Spunkster]

Can you send a datalog with it connected to the analog input and the calibration that datalog is made with?

[jbt]

I have managed get the analogue wideband working when I removed the ground cable between the PLX controller and the kpro ground. With the ground connected, the PLX will only send out 0 volt. Any idea why it's happening?
I still don't understand why the digital wideband doesn't work.
Can one check the digital signal that the PLX sends out wth a multimeter to see if it working properly?

[Spunkster]

Please draw a diagram and post it so we can see exactly how you have everything wired, as it sounds like you do not have something wired correctly.

[jbt]

With this wiring the Analog output didn't work. When I removed the cable between the Kpro analog ground and PLX analog ground the analog output started to work.

Kpro diagram.jpg

[Spunkster]

Try removing both of the black grounds from PLX in your image.

[jbt]

Tried with the TX ground disconnected and it didn't make any difference.

Digital wb without GND.kdl

[Spunkster]

If the analog works with the ground disconnected then it sounds like it might be a problem with the wideband digital output. The PLX generally does not need an extra ground like some widebands do.

[jbt]

Is there any way that I can check the PLX digital output?

[Spunkster]

That I would recommend contacting PLX Devices for assistance with.

[jbt]

My Kpro has not started to loose bluetooth connection with the app more regulary now. When I try to connect again the kpro can not be found.

[Spunkster]

Try removing the lid from the ECU and see if you have a more reliable connection. It may be interfering with the signal.