Airbag control unit with part number 9628740480

What does the airbag control unit 9628740480 do?

The airbag control unit 9628740480 decides on airbags and seatbelt pretensioners within the restraint system (SRS) of Peugeot. It evaluates the crash sensors, acts within milliseconds in an accident and monitors the system constantly.

The unit shows detected faults via the airbag warning light. The sensors supply measured values, which are processed in the control unit.

After an accident, the unit secures the crash data and locks itself. The background and the signs are explained in the next sections.

Why does the control unit 9628740480 fail?

Crash data stored after an accident, even without an airbag firing, is the most common cause on the 9628740480. Ageing electronics, cold solder joints, moisture and corrosion at plugs, and voltage spikes are also possible.

The crash data stays stored because an ordinary diagnostic tool does not remove it. Airbag24 carries out the deletion as part of the repair.

Electronic components age, and solder joints can go cold. This leads to faults that can occur without any accident at all.

Moisture and corrosion at plug connections lead to poor contact, while voltage spikes, for example from a weak battery or jump-starting, place additional stress on the electronics.

How can you tell that the 9628740480 is defective?

A defect on the 9628740480 can be recognised by the airbag warning light in the instrument cluster, together with fault messages and a diagnostic tool with no connection.

Typical signs at a glance:

• airbag warning light stays on constantly
• airbag warning light comes on from time to time
• fault message in the instrument cluster
• diagnostic tool cannot establish a connection to the control unit
• fault memory cannot be cleared

In an emergency, the airbags and seatbelt pretensioners may not trigger in this condition. That is why the warning light must be taken seriously.

Which vehicles is the 9628740480 fitted in?

The control unit 9628740480 is fitted in these vehicles: Peugeot 306 I (1993-1997) and I Facelift (1997-2002).

The vehicles from the data for this part number are listed below:

• Peugeot 306 I (1993-1997)
• Peugeot 306 I Facelift (1997-2002)

Compare the number on the label of the removed unit with this page; this only confirms that the unit matches. Also have the fault memory read out beforehand, because only that shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 9620732580, 9621996780, 9636995580.

How does the repair of the 9628740480 work?

The process starts with reading out the fault memory, and the log travels with the unit. Only after that do you disconnect the battery and remove the control unit. Next, create the repair order online, then send the packed unit in. At Airbag24, testing, repair and functional testing usually take 3–4 working days.

This sequence must be followed for safety reasons.

Airbag24 examines the unit on the test bench, repairs components where necessary and deletes the stored crash data. A functional test follows at the end, and then your own unit is returned.

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 9628740480 get to Airbag24?

You send the control unit 9628740480 as a parcel or, for an extra charge, arrange a UPS collection. Airbag24 sends it back to you by UPS after the repair.

Enclose the printed repair order in the parcel and pack the unit shock-proof.