Airbag control unit with part number 9803917380

What does the airbag control unit 9803917380 do?

The airbag control unit 9803917380 is the central control unit of the restraint system (SRS) for Citroën and Peugeot. It evaluates the signals from the crash sensors, decides in an accident within the shortest possible time which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. If it detects a fault, it indicates this via the airbag warning light.

The unit checks sensors, airbags and seatbelt pretensioners as well as their connections continuously during operation. It stores irregularities in the fault memory so that they can be found during diagnosis.

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

Why does the control unit 9803917380 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data arise after accidents in which no airbag has deployed. They remain in the unit and cannot be removed with a normal diagnostic tool.

Aging of components and cold solder joints also play a role. They can cause faults that occur only intermittently and are therefore hard to pin down.

Moisture and corrosion at plug connections impair the contact. Voltage spikes, for example from a weak battery or from a jump start, additionally stress the electronics.

How can you tell that the 9803917380 is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently, through a fault message, or through the diagnostic tool being unable to connect to the control unit. It is also noticeable if the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The typical signs at a glance:

• airbag warning light on permanently or intermittently
• fault message in the instrument cluster
• diagnostic tool without connection to the control unit
• fault memory cannot be cleared

If any of these signs appears, have the fault memory read out before taking any further steps.

Which vehicles is the 9803917380 fitted in?

The control unit 9803917380 is fitted in these vehicles: Citroën Berlingo II B9 (2008-2012), II 2nd Facelift (2015-2018) and II 1st Facelift (2012-2015); Peugeot Partner II 1st Facelift (2012-2015), II (2008-2012) and II 2nd Facelift (2015-2019); Citroën Berlingo Multispace II 1st Facelift (2012-2015), II 2nd Facelift (2015-2018) and II B9 (2008-2012).

The models in which the unit has been installed are compiled in the following overview:

• Citroën Berlingo II B9 (2008-2012)
• Citroën Berlingo II 2nd Facelift (2015-2018)
• Citroën Berlingo II 1st Facelift (2012-2015)
• Peugeot Partner II 1st Facelift (2012-2015)
• Peugeot Partner II (2008-2012)
• Peugeot Partner II 2nd Facelift (2015-2019)
• Citroën Berlingo Multispace II 1st Facelift (2012-2015)
• Citroën Berlingo Multispace II 2nd Facelift (2015-2018)
• Citroën Berlingo Multispace II B9 (2008-2012)

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

For the same vehicles, we also repair control units with the part numbers 6590PK, 9665250280, 9665558380, 9665558480, 9665944180, 9673393980.

How does the repair of the 9803917380 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit, create a repair order online and send the unit in well packed. Airbag24 tests it on the test bench, repairs defective components and carries out a function test; processing usually takes 3–4 working days.

The sequence is binding for safety reasons. The control unit is removed only once the fault memory is secured and the battery is disconnected.

After the function test, your own unit is returned to you, and the 3–4 working days apply only to the work 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 9803917380 get to Airbag24?

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

Enclose the printed repair order in the parcel and pack the control unit securely against shocks so that it arrives undamaged.