Re: Peterborough Alfa Diag / Examiner Airbag Lamp Help
I'm pretty sure that wouldn't do it! I work in vehicle electronics/software design, which includes designing diagnostics strategies. For something safety related like an airbag system, you want to be very sensitive to faults - turn the light on at the first sign of a fault, log a code and -probably- keep the light on until someone connects the diagnostic tool and clicks to say the system has been inspected/fixed. A more sophisticated design would have the light go out automatically after 20 or so runs with no sniff of a fault.
Disconnecting the battery could work on older engine ECUs which might rely on vehicle battery power for diagnostics memory. Nowadays, most ECUs will use non-volatile memory (like that found in, say, a USB memory stick) so the memory sticks, even without battery.
Anyway, I found a guy on Oundle Road in Peterborough - Longueville Autos. They seem to have a slight leaning towards Italian cars. I'd cleaned (and slightly bent) the pins beforehand. He then happily connected the diagnostic tool and put the light out for me - without charge! (This time.)