Description
Overview
Original BSI 2004 H03-01 manufactured by Johnson Controls for PSA group vehicles (Citroën/Peugeot). This module is the central body and comfort control unit located under the steering column and integrates fuse distribution, gateway functions between CAN/VAN buses and control of systems such as central locking, lighting, indicators, wipers, electric windows, immobiliser and communication with other ECUs. Common search references include 9660105780, 6580CX, 6580KC and 1660728380.
Origin And Fitment
This unit was removed from a Peugeot 307 1.6 16V, year 2007. Compatible fitment with other Citroën and Peugeot models is possible but must be confirmed by exact part number and hardware/software index (H03-01), VIN or vehicle equipment. BSI references are critical because connector pinout, configuration and firmware versions can differ between variants.
Symptoms And Common Causes Of Failure
A failing BSI on older PSA vehicles typically causes intermittent or permanent loss of electrical functions: dashboard lights, indicators, wipers, central locking, electric windows, or loss of communication with diagnostic tools. In some cases the vehicle may not start due to immobiliser faults. Typical causes include moisture ingress, corrosion on connector pins, and voltage spikes during jump-starting or battery faults. These issues are common on the BSI 2004 platform and often require unit replacement or reconfiguration.
Installation And Coding
When replacing the BSI it is essential to transfer immobiliser data and vehicle configuration from the original unit (memory cloning) or to set the new unit to a ‘virgin’ state and then perform full coding and key pairing via PSA diagnostic tools (DiagBox / Lexia / PP2000). Follow safe battery disconnection procedures: switch off ignition, lock the vehicle and wait for several minutes to allow ECUs to sleep before disconnecting the negative terminal. After installation reconnect the battery, complete diagnostic configuration, synchronise keys and test all comfort and security functions thoroughly.
Compatibility And Selection Advice
Always compare the label on your existing BSI (manufacturer, BSI 2004 H03-01, reference 9660105780) and visually inspect connectors for matching pin layouts. If unsure, verify compatibility by VIN and exact codes. Incorrect match of the BSI reference or hardware index may lead to non-functional features or electrical conflicts.
Key Benefits
- Original PSA / Johnson Controls part designed for the BSI 2004 platform.
- Restores full comfort and body functions when matched and coded correctly.
- Cost-effective replacement for workshops and experienced DIY mechanics wanting a quick return-to-service.
Technical Information
- Manufacturer: Johnson Controls (PSA BSI 2004)
- Model: BSI 2004 H03-01
- Product Codes: 9660105780; 6580CX; 6580KC
- Other Numbers: 1660728380
For correct selection and safe installation, compare the exact part numbers, hardware index and connectors with your original BSI. If in doubt, consult vehicle history, VIN lookup or professional diagnostic service before purchase.
