Really, this is just a big thank you to everyone and their continued posts on the subject of resetting the airbag, i know its a lengthy subject that gets revisited and probably all the more due to the introduction of it being a MOT test failure if airbag light is on
And its one that need not be bypassed by using tape, removing light bulbs, disabling any part of the dash, well it is if you have a Phase 2 Alfa Romeo Spider (916S)
as i found out to my good fortune.
In the first instance it took some time to identify correctly the type of Alfa Romeo, as i just couldn't nail it down, luckily both Wikipedia and the website hosted by Berlina Sportivo .:BerlinaSportivo - Alfa Romeo 155 Q4 and Sports Saloons on the net:.
where you can download Workshop Manuals of your beloved Alfa helped me
The manuals from this website are a godsend, showing both the Alfa Romeo Spider '98 - Phase 2 model and the Phase 1. It was here in Part 3a that i realised that a universal diagnostics connector exists, but its not always easy to find where!
This is found above the fuse/relay mounts under the steering wheel, to the far top right, it has a black dust cap on and is the 16pin universal connector.
To access the Airbag ECU I used a laptop running Windows 7 with Multiecuscan 1.7 installed (Available from Multiecuscan - Diagnostics software for Italian cars
) installing the FTDI drivers from Virtual COM Port Drivers
. These are required to ensure that the USB Cable is seen as a Serial Device (COM) by the laptop for communications to the ECU to take place. Do ensure that the speed rate is reduced to 4800bauds and action any High Latency reports as this could corrupt data.
I connected the following cable to the USB port of the laptop, once drivers were installed for the appropriate Operating System, it renamed the USBtoSerial port Com 3, though this maybe different for your install (Something to think about!)
The cable was purchased from londoncolour
on ebay and came with the appropriate drivers and a copy of VCDS Lite which i didnt use as it was for VAG veh's, however the PDF for the install of drivers was useful.
This cable in turn was connected to the Red Diagnostic Cable and to the Universal Diagnostic Connector above.
Alfa Romeo Diag Cables.jpg
These again were purchased on ebay frombuy_me_from_dan
All in all the two cables cost no more than £30!!
with the software free to download.
With all this in place I attached the cables, boot up the laptop and started the engine, to be honest there was no set order in connecting, but if you are looking at the Engine ECU then really you want the engine running so that you can view the parameters.
The Model chosen was Spider '98 2.0 TS 16V
, if I wanted to view the Engine ECU then i chose the Bosch Motronice M1.5.5 Injection (Spider '98)
and for the Airbag ECU it was the TRYMY 97 Airbag (2F-2P-I)
even though the serial number was 60664500, however, you can select F11 which will scan the Control Unit with which ever lead you have attached to find out which control module you have
Incidently, Red Lead is for the Airbag, No Lead is required for the Engine and the Green Lead is for the ABS.
So thanks to all out there on the forum, and if anyone finds this useful then it was a joint effort. Cheers, Keith