fiat punto 2003 51735936 bcm marelli

[auto ele]

hello i want to ask if somebody knows how i can connect the upa usb programer to the bcm .
the bcm has motorola mc912dg128 thanks a lot.

[sergei5005]

See in right and down Upa screen. UPA pin 5: VSS- UPA pin 6:BKGD-Upa pin 7 : Reset- UPA PIN 9: Vdd 334672 You can find in google 9S12DG128 datasheet .PDF and identifier this pins in microcontroller.

[auto ele]

thanks for your interest i already know this info and i want the on board connection circuit

[sergei5005]

With UPA pins conections and datasheet .PDF you can find conections points in board with TESTER TOOL..334869.
BKGD : Pin15 from microcontroller - Reset : Pin 30 from microcontroller. Vdd and VSS you need find 5v and 0V in board with TESTER TOOL.

[auto ele]

thanks but i already have this diagram i need the on body computer connection diagram

[sergei5005]

Easy. Find conection in body computer with Multimeter. Pin to pin.

[Bonito46]

Easy. Find conection in body computer with Multimeter. Pin to pin.
With function continuity just?

[sergei5005]

Exactly. Identifier pin in microcontroller and find conection pad in board with multimeter in continuity function.

[auto ele]

thanks again for the interest but i am afraid that the multimeter ring for a pin of microcontroler in a lot of different positions positions ni the bcm board

[auto ele]

i will try and i post back

[sergei5005]

What ?? I do not understand this" the multimeter ring for a pin of microcontroler in a lot of different positions ". Sorry friend.