Problem with Mercedes w211 airbag

[yasser]

Hi, Folks,
I have problem with airbag unit of
Mercedes E class W211 270CDI
Problem is in communication between ZGW (zentrales gateway)
and airbag module.
A211 820 94 85 HW:47/03 SW18/04
Temic 4137 Armada 16 RD EXTENSION 3

I check pover on airbag connector as theyshow in DAS.
Pin1 - +12v
pin2 - +12v
Pin84 - GND
Also I check cables between airbag module and zgw. Cables are OK.

Star diagnosis gives error (no communication or unit not instaled.)
I take other unit from working 100% good car. I connect it and check again with star diag.
Star was connect it sucsessful with this airbag module.

Now I'm sure that original module is not working.
I tryed to read MCU with programmer, but not sucsess.
Chip in 912DG128 112pin.
Is there chance this chip i to be secured OR burned?

Any one had a problem with it and give some solution for repairing ?

......OR I have to find another module to replace it?


Thank you.

[mercis]

Hi, Folks,
I have problem with airbag unit of
Mercedes E class W211 270CDI
Problem is in communication between ZGW (zentrales gateway)
and airbag module.
A211 820 94 85 HW:47/03 SW18/04
Temic 4137 Armada 16 RD EXTENSION 3

I check pover on airbag connector as theyshow in DAS.
Pin1 - +12v
pin2 - +12v
Pin84 - GND
Also I check cables between airbag module and zgw. Cables are OK.

Star diagnosis gives error (no communication or unit not instaled.)
I take other unit from working 100% good car. I connect it and check again with star diag.
Star was connect it sucsessful with this airbag module.

Now I'm sure that original module is not working.
I tryed to read MCU with programmer, but not sucsess.
Chip in 912DG128 112pin.
Is there chance this chip i to be secured OR burned?

Any one had a problem with it and give some solution for repairing ?

......OR I have to find another module to replace it?


Thank you.
airbag ecu is death
you can buy used,and write fin with upa and coding with star

[yasser]

Thank you for your answer.

Do you have idea what exactly is death?
I think that MCU is not OK, because 2 weeks before i reprogram closely same model air controler and i had connection between programmer and MCU.
In this module I can not read MCU, maybe MCU is death.

MCU is 912DG128

[kentzee]

check the flash on the mcu, maybe is wrong

[yasser]

I can't read MCU, I connect 4 wires ( +, -, reset and BKGD)
But there is not connection with MCU.
Can it be secured ?!?!?! I think NOT.
Maybe MCU is BURN.
I think do not need to lift any pins.
912DG128, it is easy mcu for connect to and read.