What is a Citroën DS3 I airbag control unit?
The Citroën DS3 I airbag control unit is the heart of your vehicle's occupant protection system. It continuously monitors relevant sensors, processes precise data in the event of an impact, and controls the activation of the airbags and seatbelt pretensioners to ensure maximum safety for the occupants. This safety-critical component is essential for protection in the event of an accident and stores important crash data.
It is responsible for the precise control of all occupant restraint systems based on real-time monitoring of crash sensors. The system deploys airbags and seatbelt pretensioners as needed.
The control unit can control a variety of firing circuits for airbags and seatbelt pretensioners, as well as numerous sensor interfaces. Typical systems support up to 32 firing circuits for comprehensive protection.
Another important aspect is the storage of crash data in the internal memory. This data is crucial for fault diagnosis and accident analysis after a collision.
Why is the Citroën DS3 I airbag control unit defective?
The Citroën DS3 I airbag control unit may be defective because it stores crash data after an accident, requiring reinitialization. Internal electronic errors, such as EEPROM problems or firmware corruption, as well as power supply issues, can also lead to failure, necessitating professional repair of the airbag control unit.
After an accident, the control units are blocked, and the error log cannot be simply erased. A professional repair or reset is necessary.
Typical causes also include power supply errors or internal memory errors, which can impair the functionality of the control unit.
Firmware integrity errors or problems with the control unit's internal software also often lead to failure. Such errors prevent the airbags from functioning properly.
Common error codes for Citroën DS3 I airbag control unit repair
When repairing the Citroën DS3 I airbag control unit, specific error codes are often read out, indicating internal problems with the control unit itself. These codes indicate communication errors, internal memory problems, or power supply malfunctions that require specific diagnosis and repair.
- B1000 → Control unit communication error → Problems in data transmission within the control unit or with other systems.
- B1001 → Internal memory error in the airbag control unit → Damage to the non-volatile memory where important configuration data is stored.
- B1002 → EEPROM read/write error in the control unit → Defects when accessing the internal EEPROM memory of the device.
- B1080 → Airbag control unit voltage supply outside specifications → Problems with the electrical supply to the control unit, voltage too high or too low.
- B1100 → Firmware integrity error, control unit internally damaged → Corruption or damage to the control unit firmware itself.
- B1110 → Airbag control unit software error → Logical errors or corruption in the internal operating software.
- B1130 → Airbag control unit not initialized → The control unit was not correctly configured or commissioned for the vehicle.
- B1200 → Error in the CAN bus communication protocol → Malfunctions in the communication between the control unit and other vehicle components via the CAN bus.
- B1210 → Control unit internal self-diagnosis failed → The control unit could not successfully check its own internal functions.
These specific error codes refer exclusively to the central airbag control unit of the Citroën DS3 I. Sensors or airbag modules are excluded.
Crash data stored after an accident prevents errors from being easily erased. Professional reprogramming or repair is usually essential.
The error codes are manufacturer-specific for Citroën DS3 I models with OEM part numbers such as 626181500 and 9803832380.
What part numbers are available for the Citroën DS3 I airbag control unit repair?
For the Citroën DS3 I airbag control unit repair, there are several verified OEM part numbers, primarily from manufacturers such as Autoliv and Citroën. These numbers identify the specific control unit and ensure compatibility with your vehicle model, which is essential for a successful repair.
626 18 15 00 (Autoliv): This airbag control unit is a genuine/OEM part designed for the Citroën DS3 I. It is commonly used in repair services and is identical to 9803832380.
98 038 323 80 (Autoliv): Also a genuine/OEM part number from Autoliv, suitable for the airbag control unit of the Citroën DS3 I. This number is often mentioned in conjunction with 626181500 and is widely used.
9803832380 (Autoliv): Another spelling of the Citroën OEM number from Autoliv, which also identifies the airbag control unit for the DS3 I (model years 2010-2016). It has been confirmed multiple times.
96 413 912 ZD (Citroën): This Citroën OEM part number designates an airbag deactivation unit, which is part of the airbag control unit system of the Citroën DS3 I. It is specific to the 2010-2016 models.
618300400 (PSA / Citroën): This OEM part number is documented for the airbag control unit of the Citroën DS3 I, specifically for the 2011 diesel versions. It comes directly from PSA/Citroën.
All part numbers listed are validated exclusively for the central airbag control unit of the Citroën DS3 I (model years approximately 2010-2016). Sensors or individual airbag modules are excluded.
Autoliv and Citroën/PSA are the primary OEM manufacturers of these critical safety components. Their parts ensure the highest levels of compatibility and safety.
The numbers 626 18 15 00 and 9803832380 are identical and refer to the same Autoliv airbag control unit.
Compatible vehicle models and years of manufacture for the Citroën DS3 I airbag control unit repair
The Citroën DS3 I airbag control unit is primarily compatible with the first generation of the Citroën DS3. This includes vehicles built between 2010 and 2016.
The control unit supports both gasoline and diesel DS3 engines, including specific variants such as the 1.4 HDi 70 hp version. It is suitable for all common engines of this era.
Functionality and features of the Citroën DS3 I airbag control unit
The airbag control unit continuously monitors the connected crash sensors in the vehicle to immediately detect an impact. It is the central unit for occupant safety.
In the event of an accident, it precisely evaluates the sensor information and instantly deploys the airbags and seatbelt pretensioners, effectively minimizing occupant injuries.
After an impact, the control unit stores relevant crash data. This data is essential for accident analysis and the necessary repair of the airbag control unit.
After the repair or reset, the crash data is erased and the error log is reset. However, the vehicle-specific programming remains intact, making reprogramming unnecessary.
Installation position and connections of the airbag control unit of the Citroën DS3 I
The airbag control unit in the Citroën DS3 I is typically installed in the interior, often under the driver's seat or in the center console area. This location optimizes the connection to all sensors and modules.
It features multi-pin connectors for connecting crash sensors, airbag modules, seat belt pretensioners, and the vehicle network (CAN bus). Secure installation is crucial.
Installation and removal are safety-relevant and should only be performed by qualified specialist workshops. Before working on the airbag control unit, the vehicle battery must be disconnected to prevent accidental deployment.
Special features and variants of the Citroën DS3 I airbag control unit
The Citroën DS3 I airbag control unit is repairable. It can be professionally tested, repaired, and reset to restore full functionality without having to purchase a new part.
This deletes stored crash data and resets the error log, while leaving the original vehicle software untouched. This saves costs and effort when repairing the airbag control unit.
Control unit variants may depend on the specific engine (e.g., diesel vs. gasoline versions) and the vehicle's equipment. Advanced safety features may also be integrated.
The control unit is a core component of the occupant protection system, which includes front and side airbags, belt tensioners, and optional head airbags and interfaces to other safety systems.