Description
DELPHI alarm control unit for Citroën and Peugeot vehicles
This alarm control unit is designed for integration with the vehicle’s security and central locking systems. It manages alarm triggers from door and interior sensors, controls the siren outputs and remote locking signals, and communicates with the car’s body/immobilizer electronics where applicable. Ideal for professional workshops and experienced DIY mechanics who need a direct replacement unit for affected Citroën and Peugeot models.
Compatible Vehicles
Commonly fitted to the following models: Citroën C4, Citroën C5, Citroën C6, Citroën C8, and Peugeot 206, Peugeot 307, Peugeot 407, Peugeot 607, Peugeot 807. Check the product codes below to match the correct variant for your vehicle.
Technical Information
- Manufacturer: DELPHI
- Model: Alarm Control Unit For Citroën / Peugeot
- Product Codes: 9650242080, 6680Q1, 6680L0
- Other Numbers: NFP (as referenced in original listing)
Installation Recommendations
- Disconnect the vehicle battery before beginning work and observe basic ESD (electrostatic discharge) precautions to protect the electronic unit.
- Access the unit following manufacturer body trim removal instructions; alarm modules are often mounted under dashboards, in fuse boxes, or behind trim panels.
- Carefully unplug all connectors and label them if necessary to ensure correct re-connection.
- After mechanical installation, the unit may require coding or pairing with the vehicle’s central systems using a professional diagnostic tool—ensure the vehicle’s electronic modules are scanned and any related fault codes are cleared.
- Perform a full function test: lock/unlock with remote, trigger door and interior sensors, and verify siren output to confirm correct operation.
Replacement Procedure
Typical replacement steps: 1) Remove negative battery terminal and wait a few minutes; 2) Remove trim panels to access the alarm unit; 3) Disconnect connectors and remove the unit from its bracket; 4) Install the new unit, reconnect connectors and reassemble trim; 5) Reconnect the battery and complete any required programming or diagnostics. For efficient work, have a scan tool and wiring diagram available.
Why This Part Fails Most Often
Alarm control units fail primarily due to moisture ingress and corrosion, electrical surges (e.g., from jump-starts or faulty alternators), degraded solder joints or aged electrolytic components, and physical damage from impacts or improper previous installations. Environmental exposure and long service life accelerate degradation—failures typically manifest as intermittent alarms, inability to arm/disarm, or loss of siren/remote functions.
This replacement unit is a practical choice for mechanics and experienced DIYers who recognize the product codes 9650242080 / 6680Q1 / 6680L0 when searching for compatible alarm modules for Citroën and Peugeot vehicles. Order now to restore reliable vehicle security and central locking performance.
