There is no such thing as a OBD-I 4th gen Maxima. I've confirmed this on three 1995 Maximas with my OBD Scan (OBD-II) scanner. The 95s have their OBD-II connector located above the ECU on the passenger side of the console. The 96+ appear to have the connectors all located under the steering column.


Dave

 

Yeah I've never bought into the idea that like 2 months into the model year Nissan decided to change from OBD-1 to OBD-2. I'm willing to bet someone will chime in with "I know for a fact my car is OBD-I" or "I know for a fact that ____'s car is OBD-I"

 

I hope it is Ill check a little bit later to see if I can find that connector.

 

Correct me if i'm wrong. Would this information that you have confirmed help technosquare crack the ecu for the 97'+ 4th gens? Being that all 4th gens are OBD-II.

 

then why can't autozone scan my car?

and if it's on the passenger side, does that mean i would have to remove the center console panel to get to it?

 

I knew this
When I bought my 95 with 80k miles, the sticker that told you the "on-board scan diagnostic... blah blah whatever was located on the passenger side floarboard" was still in place.

 

I took my car in to get Network car installed and they said they couldnt do it because it was OBD-I. I raised hell about it, got the dealer on the phone and a shop mechanic confirmed that it was in fact an OBD-I.

 

Those shop mechanics are retarded. They were just to lazy to find the plug. My max was made in 4/94 and its OBDII. Hmmm thats a mystery. Mine also has the plug next to the fuses.

 

__________________________________________________ _______________
The 95s have their OBD-II connector located above the ECU on the passenger side of the console.

__________________________________________________ _______________

Not sure if this means anything, in order to get to my connector. You would need to pull the fuse cover under on the drivers side console, just near the hood release. The connector unit is located to the right of the fuse box. That is where I saw them plugged the OBD scanner in... Unless this connectot means something else???

 

So hold up if they can check your cars computer with a little diagnostic port, it means that your car is OBD-II? If it is then I'm OBD-II because I had it checked at the dealer that way.

Mine has a plug right next to the Fuses too.

 

i have a 95 and recently had to take emissions.
when i pulled in, they ran is and ran it on the dyno instead of doing the plug test. i asked why they did that and they told me that since my car was OBD-I, they had to run it.

kiwon

 

What does this plug look like? The other day when I had to take the dash part under the steering wheel off (to check gauge cluster bulbs) I came across a connector that was brown and wrapped in a plastic bag, is this it?

 

I just got another TS for my 97 and no MIL whatsoever this time. Both stock '97 and repl '96 ECU's read Calif type on my scanner.

 

I am waiting on Ben to chime in, we had a discussion last weekend on why the differences detween my '96 and his '95. This was sparked when I noticed he did not have the same clutter under his hood that I had under mine.

 

The connector is white and has two rows of pins. On the 95s I've scanned, the connector sits just above the kick panel that covers the ECU on the passenger side. The connector tucked up close to the console and in a vertical position. You can't see it unless you get on your hands and kness and turn your head. On my late build 96, the connector is located under the steering column near the dash fuse panel.

The 95s I've scanned were all early build 95s therefore it's safe to assume all 95s are OBD-II. The 95s all had codes stored which means if they had OBD-II specific codes stored, then they're OBD-II ECUs. The only thing I notice that different with the 95s is that they don't all the EGR gear on top of the intake manifold and that they don't display the pressure (Hg) on the OBD scan.

Per OBD-II, all connectors must be within 3 feet of the steering wheel, in the passenger compartment, and easy to get to within 30 seconds.


Dave


Dave

 

Thats it...Im taking my car back in and having Network Car installed.

 

what is network car???

 

www.networkcar.com

Check it out!

 

I called another dealer today and they said to see if I had OBD-II to go and check the emissions sticked under the hood. I went to check and I dont see anything about OBD...He said it would say either "OBD-I" or "OBD-II" Anyone know about that?

 

Yeps, ive been saying this for years. All 4th gens are OBDII. I have never seen any 95 Max OBDI. Even early production ones like 6/94 are still OBDII. The 1995 Nissan Factory Service manual says its OBDII. There aint no such thing as an Early version FSM for OBDI Maximas.

 

Technically Nissan didn't have to make the 1995 Maxima OBD-II compliant so I doubt they have the stickers saying they are. If the car has the OBD-II connector then it's an OBD-II ECU.

Like others have said, it would have been stupid for Nissan to waste money and make one model year OBD-I and then following year upgrade the car to OBD-II. Think of all the money and time they would have wasted.


Dave

 

Mine better be. I couldn't find the sticker but I could find the connection point on the pass side behind the console.

I'm expecting UPS to deliver a present for me today! (http://www.digimoto.com) If it wasn't OBD-II I would be f***ed.

If anyone is having trouble finding this port, stick your head under the glovebox with your nose pointed towards the steering wheel. You should see it if you are looking at a 95. It's basically a white trapezoid.

I agree with Dave... call it wishful thinking if you want, but I really don't think Nissan would run two different interface protocols during the a32 production. I have not read this entire thread but has anyone called up a Nissan dealer service desk and asked this question?


D

 

So, this isn't it? Is it that smaller white one in the background?

 

Here it is...


And it looks like this:


Sorry about the crap quality... one of those overgrown digital video cams with still pic capabilities.

D

 

That's the plug for the Nissan CONSULT tool, used by the techs for diagnostics etc. The CONSULT tool is also used to advance the 5th gen timing, giving a nice performance boost .

 

I have said this a few times as well. My 95 was made in 03/94 and its OBDII and I don't think they made any 4th Gens before that.

 

Jime is right and he also has a very early 4th gen. The last set of digits in his vin is the number of his 4th gen. His was the 4403rd 1995 Maxima built. One of the 95s I tested was the 850th 1995 built.


Dave

 

Well when I went to the dyno yesterday the morons there said, "This car is OBD-I so we can't clear the codes." It was my first time and I didn't want to risk looking like a retard so I didn't argue. When I go back after my next mod I'll show 'em the plug. BTW, is this a decent pull for what I have? Nobody is responding in the dyno disscusion forum.

 

Anyone, what do I need to check the codes on my '96. I am guessing the ODB connector and software. If so, what software and where can I get it? and what else would I need if anything?

Vortex SE

 

seems a bit low, I would figure you would be in the 180-185 range. You sure you don't have a KS code?

 

 

so whats the word thunderbird?

 

I bought a OB II scanner today and tested it on my 95 max. I pulled 9 codes on the car. One of them was a knock sensor.

Dave thanks for finding that OB II scanner connector for us

Jaime

 

damn you guys buy those thing aren't they Fu{ken expensive? My obd II plug is in the fuse box on the drivers side.

 

Sure enough I found my connector...I will be pointing it out the the Network car installer on Monday. What a discovery!

 

Let me be the noob here and ask what the hell this is going to do for me. Is it just going to let me pull codes? Don't get me wrong, that sounds nice and I'll be getting the setup as soon as I can, but what else is this information going to do for me.

 

Allows you to hook up a scanner and check out the codes, injector duty cycle, sensor voltages, all that good stuff

 

Ok, I've got a question...

I'm not doubting that the 95 is OBD-II, but every single 4th gen i've ever touched has the ECU plug right next to the fuse box. I've noticed the one on the passenger side on mine and I've always been curious to what it is and I've had the Consult, Consult II, and NProbe (great Consult alternative that costs MUCH less) and they have all been plugged into the connector at the fuse box and as far as I can tell they've all read like and OBD-I ECU. Question is, what is the difference between the two plugs and if it's OBD-II, why would the two plugs read different?

I could be completely wrong and the one next to the fuse box reads everything except for the few sensors that don't show up that Dave mention earlier in this thread...

me confused...

 

whats he talking about. mines next to the fuse cover as well.

 

Wasn't it a law that all cars 96 and up had to be obdII compliant? Some cars built in 95 were and weren't obviously. In my city, emissions is done by scanner on 96up cars, and by dyno on 95 and under cars. Not necessarily meaning that all obdII cars get plugged in, some actually get dynoed and the classacts that run the tests think everything under 96 is obdI.