Airbag control unit with part number 9655275980

What does the airbag control unit 9655275980 do?

The airbag control unit 9655275980 is the central control unit of the restraint system (SRS) in Peugeot. It evaluates the signals from the crash sensors, decides in an accident within milliseconds about airbags and seatbelt pretensioners, and monitors the system continuously. It reports faults via the airbag warning light.

In everyday use this work remains invisible, because the unit checks sensors and wiring constantly in the background. If it detects a deviation, it creates an entry in the fault memory that a diagnostic tool can read out later.

After an accident the control unit stores crash data and locks itself.

Why does the control unit 9655275980 fail?

The most common cause in the 9655275980 is crash data stored after an accident, even when no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery or a jump-start.

The control unit stores crash data after an accident and retains it until it is deliberately removed. The other causes concern the electronics themselves: aged components lose reliability, and moisture or corrosion on plugs create transition resistances that distort signals.

A weak battery and a jump-start count among the voltage spikes that can stress the control unit. For that reason it is worth checking the battery as well whenever there is a fault.

How can you tell that the 9655275980 is defective?

On the 9655275980 the airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster. If there is no connection to the diagnostic tool, or the fault memory cannot be cleared, that is a further sign. In that case the airbags and seatbelt pretensioners may not deploy in an emergency.

Typical signs at a glance:

• Airbag warning light in the instrument cluster, permanently or intermittently
• Fault message in the instrument cluster
• No connection to the diagnostic tool
• Fault memory cannot be cleared

Whether the fault occurs permanently or only intermittently is shown only by the fault memory.

Which vehicles is the 9655275980 fitted in?

Which vehicles are affected depends on the part number. The 9655275980 is fitted in these vehicles: Peugeot 206 I (1998-2003) and I Facelift (2003-2009).

The list below shows which vehicles are stored for this part number.

• Peugeot 206 I (1998-2003)
• Peugeot 206 I Facelift (2003-2009)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the right unit. Have the fault memory read out beforehand, because only that result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 550 54 15 00, 602 32 73 00, 6547WJ, 9635268880, 9636894080, 9641478080.

How does the repair of the 9655275980 work?

First read out the fault memory and enclose the log, then disconnect the battery and remove the control unit 9655275980. Afterwards create the repair order online and send the unit in well packed. Airbag24 checks and repairs it, erases the stored crash data and returns your own unit to you.

The order of these steps is mandatory for safety reasons. Only once the fault memory has been read out and the log is available may the battery be disconnected, and only then does removal follow.

At Airbag24 the unit is examined on the test bench, defective components are replaced and the crash data erased. A function test completes the work. Processing at Airbag24 usually takes 3–4 working days.

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 9655275980 get to Airbag24?

You send the control unit 9655275980 as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns it by UPS. Place the printed repair order in the parcel and pack the unit shock-resistantly.

Shock-resistant packaging protects the sensitive electronics on the way.