Hey ive been searching for the past 2 days, and havent much luck....

I have a p28 s300, in a 94 cx hatch body...Last owner half@ssed a narrowband autometer A/F guage...

My question is this: I removed the narrowband guage, and installed the wideband guage, but the wiring im a little bit uncertain about. 4 Wires come off the wideband, red, black, white, blue...Red is obvious to a 12v source, black is the ground, white goes to oem o2 sensor input, and blue is for data logging. So i need to know where this white wire is hooking up to, as far as what wire to splice into on the ecu harness? Blue as well, or am i not hooking it up to datalog, and let the tuners datalog? I guess, daily driving, and such i dont need to datalog?

I think i made my question clear, but if more info is needed let me know...thank you much for your time, and help in advance!

 

Incorrect. The white wire runs to an input on the ecu for datalogging as it is a 0-5 volt output.

The blue wire is not needed.

Concerning what input to use on the ecu, read the Smanager help file.

 

mtber,

where am i running the white wire? Thats what im unclear about...

blue, i just need to cap it off?

im in the smanager help file, where am i looking though?

i need my hand held through this..lol

 

Ok, to add to this, im in hondata smanger help file. under ecu connectors, im seeing A6 is "O2 sensor heater" is this where im connecting the white wire too? thats my guess? :-/

 

http://www.hondata.com/techplxwiring.html

This is for the PLX. I dunno what outputs the aem unit has. but i assume the white is your WB output

White 0-5V Output from wideband - connect to ELD input making sure that the ELD is no longer connected to it (ELD is pin D10 on an OBD1 ECU)

 

JDMcrx, it is the white wire on AEM alos for the output.

Are you saying to cut D10 on the ECU harness (D10 being Electrical Load Detector)
And rather than "T" in to that D10 wire with the white wire from aem...just run the white wire from aem, directly into D10? So essentially the ELD is no longer connected to the ecu? Correct or Way off?

 

Yes cut the D10 wire at the ecu or better jumper harnes and the wire going to the ecu put a female terminal on it and a male terminal on the wire from the wide band and plug it in. At the D10 pin its is a GREEN WITH RED wire

 

I know by now your thinking im a pain in the ***...but can you illustrate how im suppose to have the white wire come into D10 (green/red)

 

Take a pair of side cutters in the D wiring harnes side pin 10 check the wire if its green with red. Cut it and put a female terminal on it the side going to the ecu. Now take the white wire from your wide band and crimp a male spade terminal on the end of it and plug it in. And thats all you have to do.

 

Male terminal crimp on the white wire from the wideband

Female terminal crimp on the green with red wire coming from the ECU on the right side kick panel.

 

BEA-uuutiful...got a better idea now. Thanks...what about the other cut end of green/red wire? thats staying disconnected to the world, correct?

And Lastly, rather than male/female connectors, should i use solder/shrink wrap??

thanks again!

 

Yeah use some heat shrink the non glue type. But with the insulated connectors use a lighter or heat gun but dont heat up the insulation around the connector it will shrink and u will not be able to use it lol

 

Just did all my connectors, and its raining...gotta wait to finish...thanks again!

 

Install successful!

but...code 41 heated o2 sensor is still on

idle still surges (only happened since map was put on)
and hondata a/f says 13.5 but guage says 12.6...what to fix?

 

bump for help please

 

to get ride of your code first off this

http://www.hondata.com/techplxwiring.html

To fix your reading probs look at the bottom of the link it shows u how to change the input voltage. change them by .01 at a time to get it dead on
you change it then up load give a sec and see if the change is consistant. Once u think its dead on go for a drive with a buddy and get him to watch to see if they are consistant under moderate throtle. Once set giver if its tunned.

 

Sorry voltage off set.

 

Ok will change voltage offset, till i see it match

 

as far as getting getting rid of the code, that write up isnt clear. i have a stock harness i can use...but not sure what to do with it...

 

I usually run the 0-5v signal to the o2 sensor input at pin d14.
If you are tuning with the wideband only on open loop disconnect the stock o2 sensor and tap the d14 wire.

To disable o2 heater, go to "parameters" then "closed loop". check the box to disable.

 

I tapped into d10, removed the stock o2 sensor, and went to just the wideband plugged into d14, into the s300..

 

How did it all work out man ?

 

i tapped like 10 wires and none of them showed up on hondata wtff!!

 

 

you get it going?