Description
Airbag Control Unit For Citroën C2, Citroën C3 And C3 Pluriel
Reliable replacement SRS control module compatible with Citroën C2 and C3 models including C3 Pluriel. This unit is commonly referenced under part numbers 9656889080, 654583, 654584 and 654691. Designed for professional workshops and experienced DIY mechanics who need to restore proper airbag system function, extinguish SRS warning lights and ensure passenger safety.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C2, Citroën C3, C3 Pluriel
- Product Codes: 9656889080
- Additional Numbers: 654583, 654584, 654691
Function And Fitment
The Airbag Control Unit (SRS Control Module) monitors crash sensors, seatbelt pretensioners and airbag circuits, decides deployment during a collision and stores diagnostic trouble codes related to the Supplemental Restraint System. On Citroën C2/C3 vehicles the unit is typically located under the passenger seat or behind the center console/glovebox area depending on model and production year. Correct fitment to the listed models and part numbers is essential to ensure the airbag system operates as intended.
Installation Recommendations
- Safety First: Disconnect the negative battery terminal and wait at least 10–15 minutes to allow system capacitors to discharge before beginning work.
- Access: Remove any trim, seat or console panels required to reach the unit. Keep fasteners and clips organized for reassembly.
- Handling: Unplug connectors by the housings, avoid pulling on wires. Inspect connector pins and wiring for corrosion or damage before installing the new unit.
- Reinstallation: Secure the new module in the original mounting position and reconnect all plugs. Refit trim and fasteners to factory specification.
- Diagnostics: After installation use an SRS-capable diagnostic tool to clear stored fault codes and verify system integrity. Some vehicles may require fault clearing or initialization steps using a suitable diagnostic interface.
Common Failure Reasons
- Crash Impact: The most frequent cause is a previous collision — the module may record crash data or be physically damaged after deployment.
- Water Ingress And Corrosion: Moisture and corrosion at connectors or on the circuit board can cause intermittent faults or total failure.
- Electrical Faults: Short circuits, wiring damage or electrical surges can impair module electronics.
- Sensor Or Connector Damage: Faulty crash sensors or damaged connectors often trigger persistent SRS warnings.
- Ageing Electronics: Over time internal components may degrade, leading to communication errors with the vehicle network.
Searchable Part Numbers Included For Convenience: 9656889080, 654583, 654584, 654691. Ideal for mechanics and competent DIY installers who can follow safety procedures and perform post-installation diagnostics.
