I have a PLX wideband and i was outputting the 5v wideband signal to Spare A/D and it has been working just fine for awhile. However, i wanted to use the Spare A/D for the Aux RPM function. I got it wired up and working just fine and went to move the 5v wideband signal to the E6k's Air fuel input and now only getting 1V displayed on the engine data page, but I tested that line with a multimeter and it is showing 5v.

I have it set to read 0-5v in the closed loop settings area and also changed it to every different sensor type, but nothing works, although the different sensor types vary the voltage slightly ( 20 mV or so)

I feel like i'm missing something simple here. I know the air fuel 02 input can read 5v, so i'm not sure what i'm missing.


Anyone have any ideas?

 

E6K didnt have the capability to do closed loop based on a 0-5v Wideband signal, only a narrow band 0-1v. So if you want to do closed loop with your haltech you'll have to input the 0-1v signal from your WB.

Here's a tip, use the Trim input as your 0-5v input for datalogging the wideband signal, just set the input function to GENERAL, so it doesnt affect anything. It will log the 0-5v voltage.

 

I don't want to do closed loop, i just want to log a/f with a 0-5v signal.

Hmm, I don't seem to have a GENERAL option on my trim input. The only ones I have are:

Fuel (fine)
Fuel (coarse)
Ignition
Ignition Trailing
Boost Control
Gas Pressure

 

Yes, you are right, im sorry, this is for E6X, which has a "nothing" on the Trim input to deactivate it and just reads 0-5v when plug into anything.

Your O2 sensor input should work, it should read 0-5v. Try leaving the Closed Loop option disabled but change the voltage setting to 0-5V and see if that makes it read 0-5v in the engine datapage.

 

I have tried it disabled and about every combination out there. I've also checked the wire in two different places to make sure it was sending 5v with a multimeter. I'm stumped.

 

Does it not read anything (stays at zero V), or is it reading a constant reading in the engine data page? The input may be bad, its not unheard off, and of course, the unit is already over 5 years old.

Just in case, the signal wire for the O2 sensor input into the ECU is pin 2, grey shielded wire, make sure there's continuity from the connector/sensor end to the ECU main connector.

 

It reads like a narrowband 0-1v.

I'm going to go over the wiring this weekend, from start of the wideband controller to finish in the haltech.