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OBD Issue on State Inspection NJ

Discussion in '348/355' started by drbob101, Mar 30, 2013.

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  1. yelcab

    yelcab F1 World Champ
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    #26 yelcab, Apr 2, 2013


    Yes, key off, battery off. Make sure the pins are clean and not broken. Make sure they have continuity all the way back to the OBD2 connector under the dash. And that is about all you can do.
     
  2. drbob101

    drbob101 F1 Rookie
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    #27 drbob101, Apr 2, 2013
    Last edited by a moderator: Sep 7, 2017
    Thats what I plan to do. Sifting through the pinouts I could find m trying to see whats coming from where. The stuffs in German and not real clear to me. I see pin88 of the ECU going to what I think is the obd block, but I cant find a pin out for the OBD connector.

    Same in NJ. after 96 requires OBD
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  3. yelcab

    yelcab F1 World Champ
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    #28 yelcab, Apr 2, 2013
  4. drbob101

    drbob101 F1 Rookie
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    #29 drbob101, Apr 2, 2013
    Last edited by a moderator: Sep 7, 2017
    Maybe this thread will help someone else as I go through this. I found this on Wikipedia. The OBD is an industry standard so the pinouts will have to be standardized as well. It appears that the 12V is from pin 16. 4/5 are ground, so that leaves the rest for data I would assume.
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  5. drbob101

    drbob101 F1 Rookie
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    #30 drbob101, Apr 2, 2013
    Last edited: Apr 2, 2013
    ha You beat me to it! Thank you

    We are using 4,5,7,13,15,16.

    I wonder which are 87/88 from the ECU. 4/5 are neutral and 16 is 12V, I would assume they don't come from it.
     
  6. mwhitesell

    mwhitesell Formula 3

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    #31 mwhitesell, Apr 2, 2013
    I hate to say what I had to do. But for my 97 355. Ferrari of Atlanta had to change out the alarm ECU to get it to work for me. This is why I have two. I can still swap these out and the other one will make the OBD not work. If you have one of these that someone will let you borrow, it's a quick check.
    Lucky for you. I paid for the 5 days it took the dealer to find this.
    At least with the 355. Any alarm ECU will start any other one.
     
  7. drbob101

    drbob101 F1 Rookie
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    #32 drbob101, Apr 2, 2013
    That is great information and thank you. I wonder why the alarm ECU created that issue. Do you know where it is in the car?

    Thank you
     
  8. mwhitesell

    mwhitesell Formula 3

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    #33 mwhitesell, Apr 2, 2013
    It's behind the drivers seat. LHD. And I don't know why it caused the problem and they didn't give me a good explanation. I'm not sure they knew.
     
  9. yelcab

    yelcab F1 World Champ
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    #34 yelcab, Apr 2, 2013
    The alarm ECU is the immobilizer and it disables the car from starting by cutting off power to a bunch of ignition related components and power to the dash. One of those power connections must be to the OBD as well.

    Did you ascertain that you have 12V at the right connector OBD pins while the key is on and the engine running?
     
  10. drbob101

    drbob101 F1 Rookie
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    #35 drbob101, Apr 2, 2013
    Did you have to replace all your keys and fobs, etc? Did everything have to get reprogrammed?
     
  11. drbob101

    drbob101 F1 Rookie
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    #36 drbob101, Apr 2, 2013
    NOt yet Mitchell. Im going home in a bit and will do that and post.

    Maybe if there isn't 12V to it and it is the alram ECU I could provide the 12V and circumvent the ECU replacement
     
  12. drbob101

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    #37 drbob101, Apr 2, 2013
    Last edited by a moderator: Sep 7, 2017
    There is 12V at pin 16.

    It doesn't look like my ECU connector has ever been touched, I'm even reticent to disturb it.

    Mark told me that FofA said that they thought that maybe the early (97) alarm ECUs weren't set up to work with other OBD devices. His worked with Ferrari SD things but not commercial ones until the alarm ECU was changed. His was a 97 also.

    Maybe I am stuck in the twilight zone here and that's the fix.

    I have these three connectors loose in the drivers side ECU area. I dont see anywhere that they would go and I am thinking that they are diagnostic ports
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  13. drbob101

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    #38 drbob101, Apr 2, 2013
    If anyone has a 98/99 alarm ecu with a fob that works that I could borrow to see if this is my problem please contact me.

    Thank you
     
  14. mwhitesell

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    #39 mwhitesell, Apr 2, 2013
  15. SoCal1

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    #40 SoCal1, Apr 2, 2013
    I have a early 97 spider and she works fine

    Check to make sure the pins on the plug are all in the correct position meaning not bent

    Check for + positive as you did and negative - at the plug I believe pin 4-5 are both grounds. This is what turns on the scan tool. If there is no + - the scan tool will not work

    Clean the pins in the plug

    The pins can sometimes get pushed down into the connector causing an issue


    Chances are its something simple like a bad connection

    Good luck
     
  16. drbob101

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    #41 drbob101, Apr 2, 2013
    Wiggled pulled and tugged on everything. Female pins in the OBD look fine. 4/5 grounds ohm out to the chassis, 12V at pin 16.

    I guess its to the dealer.

    Thanks for the suggestions
     
  17. finnerty

    finnerty F1 World Champ

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    #42 finnerty, Apr 2, 2013
    That is the saddest phrase you can ever hear a Ferrari owner utter.....:(

    Some cars' ODB ports are finicky.......I have used this method on other cars (especially Lotus) to get them to connect to the scanner when they are "reluctant" --- might be worth a try for you.

    1) Car off / ignition off / key out
    2) Connect scanner (obviously make sure it is power switched "on")
    3) Key in / start car (let run until stable, warm idle is attained)
    4) Turn key to stop car running / ignition "off" position (but do not turn past this position)
    5) Quickly turn key back to ignition "on" position, but do NOT start car
    6) Read scanner

    Also, and absolutely no offense meant, are you quite certain you are following the directions completely for the particular scanner you are using ? The reason I ask is that some scanners read data automatically when you plug them into the port ---- others require that an "enter / read / retrieve" function be executed manually (typically by pressing a specific function key on the scanner unit).
     
  18. drbob101

    drbob101 F1 Rookie
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    #43 drbob101, Apr 2, 2013
  19. finnerty

    finnerty F1 World Champ

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    #44 finnerty, Apr 2, 2013
    Last edited: Apr 2, 2013
    well crap....sorry to hear that.

    Only other thing I can think of is that I have had certain cars (e.g., late model Lotus Esprit) that were only readable (for whatever reasons) by the "higher end" scanners out there ---- many of the cheaper ones are not capable of reading all the different protocols used by various makes. I am not familiar with your Actron unit --- but I believe they are regarded as fairly moderate quality.....

    One last resort would be to call up some of your local parts stores (Napa, AutoZone, Pep Boys, etc., what-have-you) and ask if they can offer to read your car for you ---- most offer this service as a free-of-charge courtesy, and most stores have very high quality scanners which they use. Some offer rental, and even free loaner (secured with credit card deposit), programs for these scanners, too.
     
  20. drbob101

    drbob101 F1 Rookie
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    #45 drbob101, Apr 2, 2013
    I'll do that. This adventure started at the NJ Motor Vehicle station in that their reader wouldn't read. I would think that they have units that are of adequate quality so that they can read a wide variety of cars. If I can prove that my OBD works with some equipment, I'll go back and do battle with them. At this point, I cant even read my codes.

    I'll go to Pep Boys tomorrow.

    Thank you
     
  21. drbob101

    drbob101 F1 Rookie
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    #46 drbob101, Apr 4, 2013
    Had a chat with Dave Helms yesterday about this and he was concerned that there was a bad connection on the main ecu plug and advised pulling it and thoroughly cleaning the ecu side with contact cleaner.

    I did that twice and no success.

    I would like to trace the three data wires in the obd plug to their source. Can anyone point me to a schematic of the electrical system

    I would like to prove that something indeed does go through the alarm Ecu before going down that path.

    Thank you
     
  22. ClydeM

    ClydeM F1 World Champ
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    #47 ClydeM, Apr 4, 2013
    You'll be disappointed. I'll do this for my DDs as that's usually something simple.

    Autozone, PepBoys, Midas, advanced autoparts - All the ones I've seen are cheap Accton scanners. They work, but they are far from top-of-the-line.
     
  23. drbob101

    drbob101 F1 Rookie
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    #48 drbob101, Apr 4, 2013
    Last edited: Apr 4, 2013
    The issue here is not quality of scanners. It is getting any reader to connect with my car. I can't pass inspection until I fix it.

    That quote and comment that you cited was in reference to the quality of the scanners used at NJ DMV, not what is available for purchase at auto stores. We were ruling out scanner incompatibility as being my problem.
     
  24. finnerty

    finnerty F1 World Champ

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    #49 finnerty, Apr 4, 2013
    Last edited: Apr 4, 2013
    Bob ---

    Here is a link to / pdf copy of the WS manual for the 355 --- it has a complete wiring diagram. It may not be identical for your car's MY, spec, etc., but it should give you enough info to let you reason it (the ECU / OBD connections) out.

    http://www.ferraridatabase.com/The_Downloads/Manuals_Workshop.htm

    Go to the link for --- Workshop Manual F355 3-English Only

    I suspect that you simply have a loose / bad connection somewhere --- if you are willing to put in some time, no doubt you can likely find it / repair it yourself --- Best of luck to you :)
     
  25. drbob101

    drbob101 F1 Rookie
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    #50 drbob101, Apr 4, 2013
    Last edited: Apr 4, 2013
    Thansk David I went through those completely. They are for a 1994 and there is no schematic for the OBD on them at all

    I made some calls to Ferrari shops trying to see if someone can find a fully explanatory wiring schematic for a 1997 5.2

    Thank you
     
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