Description
Alarm Control Unit Delphi for Citroën and Peugeot Vehicles
This Delphi alarm control unit is a direct-fit electronic module designed for a range of Citroën and Peugeot models. Supplied with OE references 9657384680 and 6680Q7, the unit manages vehicle intrusion detection, siren output and interfaces with central locking and alarm sensors. Ideal for professional workshops and experienced DIY mechanics, this module restores alarm functionality and security behaviour to affected vehicles when replacing a faulty unit.
Function And Role
The Alarm Control Unit monitors door, boot and bonnet switches, shock sensors and remote locking inputs. When a breach is detected it triggers the siren and can interact with the central locking system and immobiliser circuits. The unit also provides status signals to the vehicle’s comfort and body control systems.
Compatible Models
- Citroën C4
- Citroën C4 Picasso
- Citroën C5
- Citroën C6
- Citroën C8
- Peugeot 206
- Peugeot 307
- Peugeot 407
- Peugeot 607
- Peugeot 807
Technical Information
- Manufacturer: Delphi
- Model: Alarm Control Unit
- Product Codes: 9657384680, 6680Q7
- Additional Numbers: Stellantis Reference 9657384680; Supplier Code 6680Q7
Installation Recommendations
- Disconnect The Battery Before Work To Prevent Short Circuits And Protect The Electronics.
- Locate The Unit Typically Behind The Glovebox Or Under The Dashboard Depending On Model; Remove Trim Panels Carefully.
- Observe Connector Locking Tabs And Release Them Gently To Avoid Damaging Pins.
- Inspect Wiring Harness And Ground Points For Corrosion Or Damage; Repair Any Faulty Wiring Before Installing The Replacement Unit.
- After Installation, Verify Alarm And Central Locking Functions; Check Fuses And Related Relays If Any Function Is Not Restored.
- In Some Cases The Replacement Unit Will Be Plug-And-Play If It Carries The Same Coding; If The Unit Has Different Coding Or Remote Keys Are Not Recognised, Additional Synchronisation Or Programming May Be Required By A Specialist With PSA Diagnostic Tools.
Most Common Failure Causes
- Moisture Ingress Causing Corrosion Of Connectors Or Internal Components.
- Electrical Surges Or Faulty Charging Systems Leading To Component Damage.
- Connector Or Wiring Damage From Rodents Or Mechanical Wear.
- Aging Components Such As Capacitors Degrading Over Time, Especially On Higher Mileage Vehicles.
- Impact Damage From Accidents Or Improper Handling During Previous Repairs.
Why Choose This Unit
Featuring OE cross-references 9657384680 and 6680Q7, this Delphi alarm control unit offers reliable fitment for many Citroën and Peugeot models. The module is suitable for garages and competent DIY mechanics who need a straightforward replacement part that restores alarm and security functions. Including clear product codes in the listing increases findability for customers searching by part number.
