Airbag control unit with part number 9673654880

What does the airbag control unit 9673654880 do?

The airbag control unit 9673654880 belongs to the restraint system of Citroën and controls it. It processes the sensor data, determines in an accident which airbags and seatbelt pretensioners fire, and checks the system continuously.

An accident leaves little time, so the evaluation takes place directly in the unit and not via detours.

The unit indicates a fault via the airbag warning light. After an accident it also stores crash data and locks itself.

Why does the control unit 9673654880 fail?

The most common cause for the control unit 9673654880 is crash data stored after an accident, even without an airbag deployment; an ordinary diagnostic tool does not erase it. Other causes are aged components, cold solder joints, moisture and corrosion on connectors, and voltage spikes.

An accident leaves traces in the unit, regardless of whether an airbag fired. That no airbag has fired therefore says nothing about whether crash data is present.

The remaining causes concern the electronics and their connections. Moisture and corrosion can impair contacts, and voltage spikes arise, for example, from a jump start.

How can you tell that the 9673654880 is defective?

Typical signs of a defect on the 9673654880 are the airbag warning light in the instrument cluster staying on permanently or intermittently, a fault message in the instrument cluster, a diagnostic tool without connection to the control unit and a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

If the warning light stays on after the ignition is switched on, have the system examined.

A diagnostic tool that makes no contact also indicates a fault. More precisely, this can only be clarified by an evaluation.

Which vehicles is the 9673654880 fitted in?

The airbag control unit 9673654880 is fitted in these vehicles: Citroën C3 II Facelift (2013-2017) and II (2009-2013). Compare above all the part number on the unit itself.

Below is a listing of the vehicles named.

• Citroën C3 II Facelift (2013-2017)
• Citroën C3 II (2009-2013)

Matching the label with this page confirms only that you have the right unit, nothing more. Have the fault memory read out beforehand, because only the result shows whether the control unit itself is the cause or whether a connector or cable is.

For the same vehicles, we also repair control units with the part numbers 00006546T7, 618300400, 626181500, 9656888580, 9673657880, 98 038 323 80.

How does the repair of the 9673654880 work?

First have the fault memory read out and attach the log. Then disconnect the battery, and only then remove the control unit 9673654880. Afterwards create the repair order online and send in the unit well packed.

Airbag24 examines the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Processing takes 3–4 working days as a rule.

Afterwards your own unit goes back to you. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 9673654880 get to Airbag24?

You send the control unit 9673654880 as a parcel or book a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair.

The printed repair order goes into the parcel, and the unit must be packed shock-proof.