Description
Autoliv Airbag Control Unit for Peugeot 307 CC from 2005
High-quality replacement airbag control unit designed for Peugeot 307 CC vehicles. This Autoliv unit carries multiple reference numbers often searched by professionals and DIY enthusiasts: 9653493180, 603725100, 6545HG, 6545HH. If your vehicle shows airbag warning lights, stored crash data, or disabled restraint systems after an impact or electrical fault, this unit is a direct-fit option intended to restore proper crash sensing and deployment functionality when installed and commissioned correctly.
Technical Information
- Manufacturer: Autoliv
- Model: Peugeot 307 CC (from 2005)
- Product Codes: 9653493180; 603725100; 6545HG; 6545HH
- Additional Numbers: NFP (as referenced in original listing)
Function
The Airbag Control Unit (ACU) monitors inputs from crash sensors, occupant sensors and seatbelt pretensioner circuits and decides when to trigger airbags and pretensioners in the event of a collision. The unit also stores crash data and fault codes that help diagnose system status after an event. Proper operation is critical for occupant safety.
How To Replace
- Disconnect the negative battery terminal and wait at least 10 minutes to allow capacitors and backup power to discharge.
- Locate the airbag control unit following the vehicle repair manual. Remove any necessary trim, seat fastenings or center console panels to gain access.
- Carefully unplug all airbag and sensor connectors, noting locking tabs and connector orientation.
- Unbolt the unit from its mounting bracket and replace with the new unit, securing to the original torque values if specified by the manufacturer.
- Reconnect harnesses, reinstall removed trim or seats, reconnect the battery and use an appropriate diagnostic tool to read and clear fault codes and verify system readiness.
Installation Recommendations
Always follow Manufacturer Service Manual procedures. Disconnect the battery before any work on the restraint system and observe ESD precautions. Use proper tools and safe working positions when removing seats or console panels. After installation use a diagnostic scanner compatible with Peugeot systems to confirm that the airbag system reports no faults and that all sensors and circuits are within specification. If unsure, have the final commissioning performed by a qualified technician.
Most Common Causes Of Failure
- Crash Activation: Unit Is Made Inoperative After Airbag Deployment And Must Be Replaced Or Repaired According To Manufacturer Procedures.
- Electrical Faults: Short Circuits, Voltage Spikes Or Improper Jump-Starting Can Damage Internal Electronics.
- Water Ingress And Corrosion: Moisture Penetration Especially In Convertibles May Corrode Connectors Or Internal Components.
- Connector Damage Or Loose Wiring: Poor Contacts Can Cause Intermittent Faults And False Warnings.
- Aging Electronics: Over Time Capacitors Or Internal Components Can Degrade Leading To Malfunctions.
Notes For Professionals And DIY Mechanics
Reference product codes (9653493180, 603725100, 6545HG, 6545HH) when searching parts databases or diagnostic fault lists to ensure fitment. This unit is aimed at technicians and experienced DIYers familiar with airbag system procedures. Because the airbag control unit is a safety-critical component, correct mechanical installation and post-installation diagnostics are essential for vehicle safety.
