Airbag control unit with part number 9656481880

What does the airbag control unit 9656481880 do?

The airbag control unit 9656481880 coordinates the restraint system (SRS) of Peugeot. It evaluates the crash sensors, decides in an accident within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system permanently.

The control unit reports faults via the airbag warning light in the instrument cluster. That way you can recognise in everyday use that the restraint system is no longer fully ready.

After an accident the unit stores crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 9656481880 fail?

Stored crash data is the most common cause, even if no airbag has deployed. A normal diagnostic tool does not erase it. In addition there are ageing electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery or jump-starting.

It is precisely the crash data that may raise the question of why the unit shows faults after an accident although the airbags are undamaged. The data is stored irrespective of any deployment and remains there until it is removed during the repair.

The other causes concern the connections and the power supply. Corrosion on contacts, damp plugs or voltage fluctuations can cause faults that do not show up immediately, and cold solder joints on the circuit board have a similar effect.

How can you tell that the 9656481880 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears in the instrument cluster, and the diagnostic tool finds no connection to the control unit. In addition, the fault memory cannot be erased. Airbags and seatbelt pretensioners may then possibly not deploy in an emergency.

These signs are closely related. Do not leave it at observation, but have the system checked as soon as any one of them occurs.

A diagnostic tool that cannot establish a connection may also be due to the wiring. However, this only becomes apparent during a precise check of the system.

Which vehicles is the 9656481880 fitted in?

The control unit 9656481880 is fitted in these vehicles: Peugeot 607 I (2000-2004) and I Facelift (2004-2010).

You will find the models for which this part number is recorded here:

• Peugeot 607 I (2000-2004)
• Peugeot 607 I Facelift (2004-2010)

Compare the part number on the label of the removed unit with this page, so that you can be sure it is the right unit. Also have the fault memory read out, because the log shows whether the control unit itself is defective or whether a plug or cable is behind it.

For the same vehicles, we also repair control units with the part numbers 6545JK, 6556YV, 9640341180, 9659531880.

How does the repair of the 9656481880 work?

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

Airbag24 checks the sent unit on the test bench. Defective components are replaced, the stored crash data is deleted and a functional test checks the result.

The unit then goes back to you. Processing at Airbag24 usually takes 3–4 working days. This period relates exclusively to checking, repair and functional testing at Airbag24. 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 9656481880 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends the unit back to you by UPS.

Pack the control unit shock-resistant and enclose the printed repair order.