9cff code. Squib for pyrofuse excessively low resistance

[porshapower]

Hello guys. So I have the airbag light on and get this 9cff code on my icarsoft scanner. Anyone dealt with this issue before? I looked at the yellow and blue squib connector at the profuse box and although it is seated tight, I noticed the orange roubd tab in the center is missing. Does this orange tab just lock the squib in place or does it possibly spread the connectors inside the squib for an electrical contact? Here are 2 photos of my screens on my scanner. Thank you in advance for the responses.

 

[John N]

Hello guys. So I have the airbag light on and get this 9cff code on my icarsoft scanner. Anyone dealt with this issue before? I looked at the yellow and blue squib connector at the profuse box and although it is seated tight, I noticed the orange roubd tab in the center is missing. Does this orange tab just lock the squib in place or does it possibly spread the connectors inside the squib for an electrical contact? Here are 2 photos of my screens on my scanner. Thank you in advance for the responses.

 

[porshapower]

Here are the photos. Thank you.

 

[Uky]

Could very well be a short circuit somewhere. When I worked with airbag igniters, the ones I dealt with had an internal resistance of 1.6 Ohms
but this varies with type and there were also at the time several different types.
When the SRS system is working, it tests the igniters by driving a low current "No-Fire" checking for
open as well as short circuit. During an impact, it fires the igniters with an "All-Fire" current.

The actual energy required to ignite is about 0.1milliJoule, equivalent with
dropping a pencil from 4 inches hight to a desk.

Never try to measure the igniter resistance yourself.
Never mess with this kind of system.

This is a case for the authorized mechanics only.

 

[Diesel Benz]

Could very well be a short circuit somewhere. When I worked with airbag igniters, the ones I dealt with had an internal resistance of 1.6 Ohms
but this varies with type and there were also at the time several different types.
When the SRS system is working, it tests the igniters by driving a low current "No-Fire" checking for
open as well as short circuit. During an impact, it fires the igniters with an "All-Fire" current.

The actual energy required to ignite is about 0.1milliJoule, equivalent with
dropping a pencil from 4 inches hight to a desk.

Never try to measure the igniter resistance yourself.
Never mess with this kind of system.

This is a case for the authorized mechanics only.

Agreed except that messing with the pyrofuse is not as dangerous as working with an airbag. Still easy to cause expensive damage.

@Uky is this on a W204 C300? The fault codes do not match with fault codes from star, I'd have the car diagnosed with star first to verify it is pointing to the same issue.

 

[Uky]

I used to have "some access" to the Xentry system thanks to a friend working for Mercedes but he retired some years ago.
I cannot answer the question but error codes may be differently displayed depending on the diagnostic tool used.

You will need to check your car with a Xentry system.