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OBDII plug on the max

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Old Nov 14, 2004 | 08:29 AM
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OBDII plug on the max

What kind of plug does a 99 max have to hook this software up (for diagnostic purposes)? Also, has anybody bought this stuff, just wondering. I have a palm pilot, might as well put it to use, thanks.

http://www.digimoto.com/order.htm
Old Nov 14, 2004 | 08:46 AM
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Nice looking products there, but from what they say, all their systme does is check codes and resets the CEL. Might as well get the standalone unit they sell which does the same thing.
Old Nov 14, 2004 | 09:01 AM
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check out this page:

http://www.digimoto.com/faq.htm
Old Nov 14, 2004 | 09:42 AM
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OK thats f*ckin cool as ****. If you get one def. do a write up on it. I got one of those crappy b/w pdas, but I want to install a laptop in the car somewhere and I;d def want that software hooked up.
Old Nov 14, 2004 | 09:47 AM
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Nobody has ever gotten the dyno functions to work on our cars. Maybe digitmoto is different. I have an Auterra and love every minute of driving. It saves tons on diagnosis and it looks cool. Check homepage for details.
Old Nov 14, 2004 | 12:01 PM
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I will. I will also let everyone know what type of "plug" to buy for the OBDII.
Old Nov 14, 2004 | 02:10 PM
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Obdii Plug Same As Any Car...look under dash on driver side
Old Nov 14, 2004 | 02:28 PM
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whats the auterra? pick if possible
Old Nov 14, 2004 | 07:35 PM
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Originally Posted by MaximaSE96
Obdii Plug Same As Any Car...look under dash on driver side
Well I was at work when I asked the question, couldnt go out and look, also the plug wouldnt be teh same as any car, or there wouldnt be three possibilities.
Old Nov 14, 2004 | 10:25 PM
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check out auterra at www.auterraweb.com It is a great product and very cool
Old Nov 15, 2004 | 09:16 AM
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Yeah, it's tight, however, it pretty much is the same as the digimoto but $100 more.
Old Nov 15, 2004 | 12:55 PM
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Auterra has excellent customer service and a good, popular product. Try out this Digimoto if you want. Competition is good for us.




Old Nov 15, 2004 | 03:22 PM
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Cool pics man. Is that system real easy to use?
Old Nov 15, 2004 | 05:02 PM
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Originally Posted by sharkulator
Cool pics man. Is that system real easy to use?

It is plug and play if you have a pda and the pda serial cable already.
Old Nov 15, 2004 | 05:56 PM
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Originally Posted by sharkulator
Well I was at work when I asked the question, couldnt go out and look, also the plug wouldnt be teh same as any car, or there wouldnt be three possibilities.
All OBDII compliant cars (1996 and up & some 1995) use the same connector type. It's part of the standard requirement.

There might be other ones on the vehicle that are used by the dealer and the mfg. test equipment.

My 95 has the generic OBDII connector by the ECM and the Nissan scan tool connector by the fuse panel.

Tim
Old Nov 15, 2004 | 06:47 PM
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All '95 Maximas are OBD-II.

It is very easy to use but as I mentioned earlier the dyno feature doesn't work. I haven't messed with any of that gear ratio BS. It works great. I use it every single day. It yells at me when I start getting below 25MPG(J/K).
Old Nov 15, 2004 | 07:06 PM
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[QUOTE=Broaner]All '95 Maximas are OBD-II. QUOTE]

Agree, but I was speaking in general terms. There are some other 95 & 94 cars that are also OBDII compliant. All cars had to be compliant beginning in 1996.
Old Nov 16, 2004 | 09:05 PM
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Originally Posted by Iilac
It is plug and play if you have a pda and the pda serial cable already.
I am refering to the software, is it real user friendly?
Old Nov 16, 2004 | 09:25 PM
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I just baught the digimoto and it's freakin sweet. you can monitor all computer data realtime while you drive (K/S resistance, O2 sensor voltages, air temp, etc..), in addition to simply checking the CEL codes and resetting them. You can also plot charts of all kinds of stuff which i havent tried out yet. It does dyno the car tho. Oh and if yer gunna order one, the plug type you need is ISO9141, as opposed to VPW or PWM.
Old Nov 16, 2004 | 09:41 PM
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i know everyone is saying that all '95 Maximas are OBDII compliant, but why do i have a sticker saying that i have OBDI? The connector is on the passenger side of the center console and i have another connector in the fuse area. what i'm really trying to ask is will is work on "every" '95 Maxima or not?
Old Nov 16, 2004 | 09:56 PM
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Not all are OBD-II

No, not EVERY 95 max is OBDII... refer to thread: http://forums.maxima.org/showthread....7&page=2&pp=40

"1995 - 1st year 4th gen, some early production models had OBD1. Rear oxygen sensor in cat. Only year GXE could have S&C package and 5 speed transmission. Only year SE could get S&C package without sunroof."
Old Nov 16, 2004 | 11:06 PM
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Originally Posted by sharkulator
I am refering to the software, is it real user friendly?

Yes, it is very user friendly, I loaded it up on the PDA and started using it without any reading of the user manual.
Old Nov 17, 2004 | 12:32 AM
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It was believed that 95s were not ODBII, but now some are arguing that it does have it. There is some connection by the ecu wiring harness connector behind the plastic shield, and I believe that may be a ODBII connection. If I remember correctly then it looks like the connection in the pictures on the digimoto and auterra websites.
Old Nov 17, 2004 | 09:00 AM
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I completely disagree w/ that link. My ECU has a production date of 4/94 and it is OBD-II. I also have a o2 in the cat which is the same as all 95-96's(That is not an OBD-II determinant). Did you guys not see my pics? My car is clearly OBD-II and has a very early ECU Prod. date. Find me a car that isn't OBD-II and I'll give you much respect and maybe money. I only know of one member w/ an ECU older than mine. Its Prod. date is 3/94 and his is OBD-II. If that doesn't prove it I don't know what does. The only reason the plug is in a different place is because that wasn't standardized until 96. Just FYI, in other brands and models there are even some 94's that are OBD-II.
Old Nov 17, 2004 | 09:18 AM
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how do you find the production date of the ECU, or is it the same as the car?
Old Nov 17, 2004 | 10:54 AM
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The production date of the ECU should be on the sticker in the driver's door jamb. Its also on the ECU. If you don't have the sticker anymore and don't wanna pull the ECU you can look up the VIN at a dealer.
Old Nov 17, 2004 | 02:26 PM
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thanks, that was what i was wondering if the sticker on the doorjamb would be the same as on the ECU.
Old Nov 17, 2004 | 06:14 PM
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My sticker has the car prod. date as well as the ECU prod. date. Just making sure cause it kinda sounded like you were going off the car date. My car was actually produced in 6/94.
Old Nov 17, 2004 | 07:31 PM
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Originally Posted by quasidynamic
I just baught the digimoto and it's freakin sweet. you can monitor all computer data realtime while you drive (K/S resistance, O2 sensor voltages, air temp, etc..), in addition to simply checking the CEL codes and resetting them. You can also plot charts of all kinds of stuff which i havent tried out yet. It does dyno the car tho. Oh and if yer gunna order one, the plug type you need is ISO9141, as opposed to VPW or PWM.

Thanks for the info, I am gonna order one next payday. Sweet ride by the way.
Old Nov 17, 2004 | 08:11 PM
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I can't believe I missed that originally. That is why this Digimoto is cheaper. It is only compatible with ISO9141 vehicles. The Auterra is compatible with all ISO protocols. I'm fairly sure the Auterra is also compatible with other interfaces. Basically the Auterra will work with any modern car.
Old Nov 18, 2004 | 06:47 AM
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Isnt an ISO plug and ISO plug.
Old Nov 18, 2004 | 11:02 AM
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There are different levels of ISO. I don't really understand it. The OBD-II plugs are mandated so why aren't they all the same? Maybe its just the placement of the pins. The Auterra must have the ability to tell what type of signal is coming through each pin.
Old Nov 20, 2004 | 11:09 AM
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Did you have to get a different plug for your machine?
Old Nov 20, 2004 | 11:40 AM
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You asking me? No, the Auttera comes with a standard plug that will work on all OBD-II vehicles. I don't know if its the software that interprets the incoming data or the little black box that converts it.
Old Nov 20, 2004 | 04:03 PM
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Originally Posted by Broaner
There are different levels of ISO. I don't really understand it. The OBD-II plugs are mandated so why aren't they all the same? Maybe its just the placement of the pins. The Auterra must have the ability to tell what type of signal is coming through each pin.
There are generally three types of OBDII interfaces:
ISO 9141 - International Standards Organization OBDII communication mode, used by Chrysler and most foreign cars. One of three hardware layers defined by OBD II

J1850PWM - (Pulse Width Modulated) SAE-established OBD II communication standard used by Ford domestic cars and light trucks. One of three hardware layers defined by OBD II

J1850VPW - (Variable Pulse Width Modulated) SAE-established OBD II communication standard used by GM cars and light trucks. One of three hardware layers defined by OBD II


The OBDII connector is the same for all three, but each one uses different pins within that connector:

J1850 VPW--The connector should have metallic contacts in pins 2, 4, 5, and 16, but not 10.
ISO 9141-2--The connector should have metallic contacts in pins 4, 5, 7, 15, and 16.
J1850 PWM--The connector should have metallic contacts in pins 2, 4, 5, 10, and 16.

Pin 2 - J1850 Bus+
Pin 4 - Chassis Ground
Pin 5 - Signal Ground
Pin 6 - CAN High (J-2284)
Pin 7 - ISO 9141-2 K Line
Pin 10 - J1850 Bus
Pin 14 - CAN Low (J-2284)
Pin 15 - ISO 9141-2 L Line
Pin 16 - Battery Power

Starting with 2003 cars, some vehicles started using a new means of communication called CAN. By model year 2008, all vehicles sold in the US must use CAN.

The Digimoto utilizes seperate interface modules for each type of interface. You buy the one(s) you need, but will work with all OBDII vehicles (except CAN).

The Auterra sytem will work with all three plus CAN.

Search the web, there's much more info out there......

Tim
Old Nov 22, 2004 | 01:29 PM
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Only reason Auterra wouldnt work for me, is because it doesnt support Pocket PC 2003. So only palms will work with it. If im only using this for my max, Digimoto will work just fine.
Old Nov 24, 2004 | 11:53 AM
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Good info Tim
Old Nov 24, 2004 | 01:13 PM
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Anyone know if any of these tools will override the setting of the ECU screw? What I mean is if your screw doesn't work anymore and your car is left in diagnostic mode, can the tool set the cpu back to normal?
Old Nov 25, 2004 | 10:31 PM
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My screw is broken too. I got it back to normal about a year ago and haven't touched it since. How do you drive if your in diagnostic mode? Mine always used to stall.
Old Nov 26, 2004 | 06:12 AM
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Originally Posted by Broaner
My screw is broken too. I got it back to normal about a year ago and haven't touched it since. How do you drive if your in diagnostic mode? Mine always used to stall.
It's weird, but it's not bad. After the car has dropped off the fast-dle, it idles a little low (about 550rpm). Then when the car is fully warm, it's back to around 700. The surging is still there, just not as bad. It's the damn ticking that bugs me, plus the fact that my CEL never comes on when I turn the ignition on.

Quick question is what is the issue with your screw? does it stop at the correct spots or just keeps turning. Mine stops at the proper detents, just doesn't seem to do anything...I will have to remove the ECU I guess.



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