Thread: interesting problem

ok so here is my issue. i have a 99 sentra with a 2.0 swap and a 95 200sx 2.0 manual ecu. i had a code for the rear o2 sensor because i didnt have one hooked up. p0136. so i made a simulator and it is indeed cycling between .1v and .9v about every 3 seconds but im still getting the code and its reading zero voltage on the scan tool. i hooked into the rear o2 sensor signal wire at pin 52 and its getting varying voltage all the way to the ecu but its not registering it for some reason. i even tried another ecu from an automatic with the same results. please help meeee....

Maybe you need a 98 or 99 ECU?
I thought I read somewhere that the pinouts are different from 95-97 and 98-99.
I am not sure and not trying to put misinformation out there,so donrt hold me to that.
Maybe someone will chime in?
I do know for sure that alot of the wiring on the B14 was changed in 98,just not if it would cause your probs.

the harness itself is out of a 96 200sx and ive already gone over all that, all diagrams i looked at still showed pin 52 as being rear o2 sensor signal wire and i connected the simulator right at the back of ecu. maybe its not pin 52 for that particular harness but im lost in this situation, ive worked everything else out without much of a problem

You need to check out this...

http://jimwolftechnology.com/wolfpdf/WIRING98SENTRASR20TO95-97ECUWIREMOD.PDF

Thats what I am talking about,Wayne.
Awesome!

I still need to do this myself... but i just don't like to touch electrical. That's why I want a damn nistune!

if only it were that easy, i already have the whole 96 harness that im using on the car now so the pins should be correct ill have to recheck. but that still doesnt explain why i get no signal from the o2 sensor on the scanner