Air Bag Cu

[1911auto]

Hello,

I have a 993(05) with air bag light on. PST2- "Control unit faulty". Cannot erase.

Replaced new CU with 996 number. Tried PST2 - display "Airbag?". Cannot detect software.

Any one had this problem.

1911auto

[number9ine]

Hello,

I have a 993(05) with air bag light on. PST2- "Control unit faulty". Cannot erase.

Replaced new CU with 996 number. Tried PST2 - display "Airbag?". Cannot detect software.

Any one had this problem.

1911auto

Hi,

If you have a 2005 911 it's a 997, not a 993. Is that a typo or am I not understanding your situation?

I'm not sure what the proper part number is for your airbag controller but if the the new one differs from the original then it may be incompatible with your car. If your car is a 997 my understanding is that you need a PIWIS for certain functions instead of a PST2. If your car is a 993 then there should be no part number starting with 996 anywhere in it.

I'll wait for someone to chime in with more info, but in the meantime you may consider cross-posting this in the 997 forum.

Mark

[1911auto]

Hello Mark,

Sorry for the mistake. It is a 993 1997 and not 2005(typing error at 2am). There is a TSB (6863,4/98) and the CU is changed to 996 618 217 01.The TSB talks about the earlier

round diagnostic socket and this car have the newer type.

Hope some have come across this.

Thank you.

Bob

[Loren]

What was the exact fault code please?

[1911auto]

What was the exact fault code please?

Hello Loren,

With the original CU. Air bag light was on and fault "Control Unit Faulty"(PST2).

Fitted 996 CU and "Air bag?" software not found.Cannot get into system.

Thank you.

1911auto

[1911auto]

Hello Loren,

993 ym 1995. "air bag light on". Part number changed to 996 618 217 02.

Managed to solve the problem on the air bag control unit. Had to use the PIWIS. The display is POSIP and not airbag.Then had

fault code 39 Passenger ,ignition circuit appearing. Also had to modify the setting from only driver to driver/passangers.

Now the airbag light is off.

Thank you.

1911auto

What was the exact fault code please?

Hello Loren,

With the original CU. Air bag light was on and fault "Control Unit Faulty"(PST2).

Fitted 996 CU and "Air bag?" software not found.Cannot get into system.

Thank you.

1911auto

[1911auto]

Hello Loren,

993 ym 1995. "air bag light on". Part number changed to 996 618 217 02.

Managed to solve the problem on the air bag control unit. Had to use the PIWIS. The display is POSIP and not airbag.Then had

fault code 39 Passenger ,ignition circuit appearing. Also had to modify the setting from only driver to driver/passangers.

Now the airbag light is off.

Thank you.

1911auto

What was the exact fault code please?

Hello Loren,

With the original CU. Air bag light was on and fault "Control Unit Faulty"(PST2).

Fitted 996 CU and "Air bag?" software not found.Cannot get into system.

Thank you.

1911auto