Fiat Barchetta cannot connect to air bag ECU

[shpuncik]

possible causes:
- bad cable;
- wrong cable setup, latency time, fake FTDI chip;
- airbag ECU itself is a toast;

[old dear]

possible causes:
- bad cable;
- wrong cable setup, latency time, fake FTDI chip;
- airbag ECU itself is a toast;

this is the bit i cannot get my headround if i plug the same set up into the engine ecu 3 pin it all works great without a problem

and i can get the blink codes ok manually from the airbag ECU 3 PIN but it wont connect with the KKL .....

think i need a beer

night all x

[old dear]

OK folks the latest....

multiecuscan connects to the engine ECU 3 pin with leads no problem

plug the same set up into the airbag 3 pin , set the multi scan on connect ,press Y and the multiscan will not connect BUT the air bag light goes out for approx 3 seconds then starts to Blink 3 times and the light comes on again permently .....so something must be connecting somewhere.

any ideas folks ?

thanks


(the 3 blinks are coming up in the fiat manual as" Module activation circuit coming into contact with 12 volts " but its only blinking 3 times when the laptop is connected by pressing Y on the multiscan )

[shpuncik]

parts catalogue shows couple different airbag ECUs and seems like early models didn't use TRW ECU. might be your problem.

[old dear]

parts catalogue shows couple different airbag ECUs and seems like early models didn't use TRW ECU. might be your problem.

yes thats a good point i will see if i can find out what ecu is in it ,thanks for your help

[s130]

If you PM me your VIN I'll look up the part number for your airbag ECU. From that we can probably find the make.

[old dear]

If you PM me your VIN I'll look up the part number for your airbag ECU. From that we can probably find the make.

will do tonight many thanks

[s130]

Have replied to you directly.

Looks like your Airbag ECU is an early one and pre TRW.