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Seat Belt/Door Open Buzzer Wiring (USA, Canada, Japan)

Discussion in '348/355' started by Qavion, Mar 15, 2019 at 7:55 PM.

  1. Qavion

    Qavion Formula 3

    Feb 20, 2015
    1,657
    Sydney
    Full Name:
    Ian Riddell
    Folks, I've been trying to figure out the wiring and operation of the Seat Belt/Door Open Buzzer module under the dash (near the driver's knee on the centre console side). I don't have a USA car, so it's for general interest only. The Ferrari part number is 61830700 and the module may be labelled Segnalatore Acustico.

    https://www.ebay.com.au/itm/Ferrari-328-GTS-Seatbelt-Warning-Buzzer-61830700-J082-/382489379574

    I got stuck trying to do a pinout for the plug on the module. The module is shown on numerous pages on the somewhat incomplete Ferrari wiring diagrams (as item 06625) .

    The plug has a non-standard numbering system with the even numbered pins on one horizontal row and the odd numbered pins on the other horizontal row. 1, 3, 5, 7 and 2, 4, 6, 8.

    Pin 1: White-black wire - linked to passenger door open switch
    Pin 3: Don't know the wire colour (if there is one).
    Pin 5: Wire may be pink - related to brake warning light test during engine start
    Pin 7: (no pin on module, so I assume no wire)

    Pin 2: Brown-white wire - linked to driver's door open switch
    Pin 4: Wire may be pink-yellow or yellow-blue (not sure)- possibly related to the seat belt
    Pin 6: Black wire - related to brake warning light test during engine start (earth wire)
    Pin 8: White wire - related to brake warning light test during engine start (power wire but only during engine start)

    Would someone with some free time be able to take a look at the wire colours? Thanks!

    Here's the incomplete diagram for the "door open" side of the module (5.2 car) :

    Figure 10 Wiring Diagram

    Regarding operation: Does the module buzzer have its own power source or does power comes from user systems (e.g via the door and seat belt warning lights? i.e. fuse 30 > door open light (on door), buzzer module pin 1 (or 2) > buzzer speaker > earth pin (?) on module.

    Thanks
    Cheers
     
  2. Qavion

    Qavion Formula 3

    Feb 20, 2015
    1,657
    Sydney
    Full Name:
    Ian Riddell
  3. Qavion

    Qavion Formula 3

    Feb 20, 2015
    1,657
    Sydney
    Full Name:
    Ian Riddell
    Can't make any sense of this at all. The colours in the photograph are not matching the pin numbering on the real unit or the pin numbers in the wiring diagrams or the pin numbering Alex used.

    Here are the pin numbers on the unit (see last picture):
    https://www.ebay.com/itm/Ferrari-328-355-Others-Seat-Belt-Brakes-Warning-Buzzer-Part-61830700-/131849060167

    They may be different to the socket numbers on the plug (car side). For example, Alex called the pin with the yellow/blue wire on it "pin 1". That's actually pin 2 of the unit. The wiring diagrams assign pin 2 to a brown-white wire. The wiring diagram colour for unit pin 1 is not legible, but may be a white-black wire.

    Hopefully someone can provide some accurate pin numbers and colours.
     
  4. Wade

    Wade Two Time F1 World Champ
    Rossa Subscribed Owner

    Mar 31, 2006
    23,200
    East Central, FL
    Full Name:
    Wade O.
    Timely... for the first time, the other day, I heard the buzzer for about a second, but couldn't replicate it.

    Let me look at it tomorrow, you've piqued my interest. :)
     
    Qavion likes this.
  5. Qavion

    Qavion Formula 3

    Feb 20, 2015
    1,657
    Sydney
    Full Name:
    Ian Riddell
    Thanks, Wade.

    I just had a look at my non-USA, Can, Jap module. It has 5 pins on the module and 5 wires (on a 9 socket plug). It has a small speaker grille, but I don't think it's active on Australian cars. The seat belt has no input into the module. I don't even know why the door open wiring goes through there (unless it's using the diode in the module or Ferrari was aiming for some commonality of wiring harnesses).
     
  6. Beetle

    Beetle Formula Junior
    Silver Subscribed

    Apr 10, 2013
    458
    Victoria
    Full Name:
    Paul, Australia
    I'm out of action till next week mate then I can also have a look to see if there are any variation to the info you have
     
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  7. Wade

    Wade Two Time F1 World Champ
    Rossa Subscribed Owner

    Mar 31, 2006
    23,200
    East Central, FL
    Full Name:
    Wade O.
    Same here... several things have come up so the car is covered...

    Apologies to Ian.
     
  8. Qavion

    Qavion Formula 3

    Feb 20, 2015
    1,657
    Sydney
    Full Name:
    Ian Riddell
    No problemo ) Thanks, guys.
     

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