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Discussion Starter #21
Update - i've disconnected all connectors, and re-seated, including in the steering wheel and control unit. Fault still there, and still the same. :(
Anything else i can check before replacing the control unit??
thanks
 

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as I suggested try another crash sensor (ACU) but make sure you have the same part number

listed below are the types in use (Alfa does not make life easy oh no !)

60625180 68HC11E9
60631206 68HC11E9
60655033 04 305536 08AB32
60656767 68HC11E9
60658009 04 305536 08AB32
60663040 04 308087 08AB32
60663943 04 311020 08AS20
60664962 04 305536 08AS20
60665492 04 312040 08AB32
60669249 08AS20
60669250 04 313049 08AS20
60675876 04-320290 08AS20
60675876 04-320290 908AS60
60675880 04 320291 08AB32

the 60658009 is very vulnerable (don't ask how I know)
 

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Discussion Starter #24
See pic attached of offending control unit - i can't seem to match up any numbers on there to parts though....?
 

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btw the device in the steering wheel is called the clock spring. One of the squibs can be at fault, only way to find out is to replace it.... do a reset and see what happens... how many AO members are saved by the airbag ?
it sounds like a great safety feature, but the numbers of accidents with airbags deploying without reason .... oops
 

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Discussion Starter #28
One of the squibs can be at fault, only way to find out is to replace it....
and again, what are the squibs. I'm starting to get confused by different components being called different things by different people lol.

I've had the airbag off of the wheel. Checked the connector on the rear of the airbag, and the other end of the connector in the steering wheel. This connector in the wheel is connected but feels loose and has some play - but i couldn't fathom a way of getting it out for closer inspeciton.
 

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All this stuff are different components of the Airbag system. Your error is present so reset won't work.

I think squibs are the detonation device that want to kill your baby.

This is hardcore stuff.. I'm stuck with the same problem with a 156 at the shop. Even if you find the issue, can you order a squib and replace it without major injury?
 

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Discussion Starter #30
Ok, so are we saying the squib is the detinator? If so, do i need simply a drivers airbag for the centre of the steering wheel?

If i'm able to get an error, which i am, does this mean the ACU (pictured) Is working?
 

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Discussion Starter #33
Thanks mad dog,
I'm thinking along those lines. Not sure how to tell if the ACU is totally dead, however, theres another thread on the go right now where the poster has replaced the acu twice and still getting the same fault.
Could be the answer! :)
 

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Discussion Starter #34
....now this is just a side thought, but would i actually be able to reset this fault anyway as i have the free version of FES.
I've read that the free version will do everything except reset airbag faults (although, its saying squib fault so no idea if the work i've done thus far would have fixed it anyway).

When i've tried to reset i get no messages in red etc, just the fault stays on screen and says something along the lines of 'fault may not clear if still present'.

So, should i invest my £50 in a) full version of FES or b) in a new drivers airbag

.........?

cheers
 

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Discussion Starter #35
a wee bump, just so i can get an answer on the above - full version required?
I'll update on a fix when i find a solution.
 

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I dont know or never used FES, I have alfadiag and ScanXL. Almost certain you need to pay for alfadiag to be able to read etc airbag faults. I just paid outright from the start.
 

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The airbag crash sensor (wrongly named airbag ECU)
Thi is not true, in an alfa 156 the box under the centre console is an airbag ecu not a crash sensor...
The actual ECU contains a crash sensor within the ECU hence the arrow...
 

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Thi is not true, in an alfa 156 the box under the centre console is an airbag ecu not a crash sensor...
The actual ECU contains a crash sensor within the ECU hence the arrow...
did you ever take an ACU apart ? then you will notice there is a G force activated switch in it, hence the name crash sensor.
 

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The airbag crash sensor (wrongly named airbag ECU) is bolted to the transmission tunnel behind the panel next to your left foot (if you have a british alfa). it contains a small lead ball that reacts if a certain G number is registered and tells the main ECU to deploy airbags.
did you ever take an ACU apart ? then you will notice there is a G force activated switch in it, hence the name crash sensor.
Yes but you claim that the box known widely as the airbag ecu is a crash sensor, but its both the crash sensor and ecu in one...

Pictured Crash sensor and Airbag ECU (some manufactures use external sensors)
 

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quote
Pictured Crash sensor and Airbag ECU (some manufactures use external sensors)
unquote

thats right, but we are talking Alfa here, the airbag ECU is also referred to as ACU
 
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