Description
Description
Delphi BSM B2 control module for Citroën and Peugeot vehicles, part number 9657608880. This is a used unit offered with a guarantee of functionality. Cosmetic damage to mounting brackets may be present and does not affect electrical operation.
Function And Application
The BSM B2 (Body System Module) is an electrical control unit that distributes power and manages multiple body circuits such as exterior and interior lighting, HVAC blower feeds, central locking, wipers and other body electronics. Correct replacement of a faulty BSM restores stable operation of these systems and prevents intermittent electrical faults.
Common Faults And Causes
- Typical Symptoms: intermittent or permanent loss of lights, blown fuses, malfunctioning central locking, dashboard warnings or inconsistent accessory operation.
- Common Causes: water ingress, connector corrosion, heat stress, vibration, internal relay or electronic component failure, or short circuits in downstream wiring.
Replacement And Installation
Suitable for professional technicians and experienced DIYers. General replacement procedure:
- Disconnect the negative battery terminal to prevent short circuits and avoid damage to vehicle electronics.
- Remove any engine bay covers or trims to access the BSM/fuse box location (often situated in the engine bay or near the battery on PSA vehicles).
- Carefully label and disconnect wiring connectors and remove securing screws or clips holding the module in place.
- Remove the faulty module and install the replacement, ensuring all connectors seat fully and seals are intact to prevent moisture ingress.
- Reassemble components, reconnect the battery, and verify all relevant electrical functions (lights, HVAC, central locking, instrument cluster) before road use.
Observe anti-static and electrostatic discharge (ESD) precautions when handling electronic modules. If unsure, have the unit installed by a qualified automotive electrician or mechanic.
Technical Information
Manufacturer: DELPHI
Model: Citroën, Peugeot
Product Codes: 9657608880, 6500Y1, 6500Y3
Other Numbers: The listed product codes ensure the correct module for specific Citroën and Peugeot models. Please verify compatibility with your vehicle before purchase.
Notes
This is a used part guaranteed to be functional. Please confirm exact fitment using the product codes above or consult your technical department if you are unsure which variant fits your vehicle. Choosing the correct BSM ensures reliable electrical system performance and prolongs the service life of body electronics.
