Description
USB connection cable for Citroën C4 B7 vehicles.
High-quality USB wiring harness designed for Citroën and Peugeot infotainment systems. This cable restores reliable USB data transfer and charging functionality in vehicles where the factory USB lead has been damaged, corroded or worn. Ideal for professional workshops and experienced DIY mechanics, the harness is compatible with vehicles listed below and is often identified by product codes 9671138380 or 6574SV.
Key Features
- Direct replacement USB harness for infotainment and media ports.
- Supports data transfer and charging for USB devices (phone, media stick).
- Original-style connector interfaces for straightforward installation.
- Durable insulation and connector housings to resist wear from repeated use.
- Marked with product codes 9671138380 and 6574SV for quick identification.
How It Works
The harness carries USB power and USB data lines between the vehicle head unit or media interface and the visible USB socket in the dash, glovebox or center console. A good connection ensures the head unit recognizes mass storage devices and smartphones for audio playback and charging. Faulty wiring or connectors cause intermittent recognition, slow/no charging or complete loss of USB function.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C4 B7; Peugeot 308 (as listed)
- Product Codes: 9671138380, 6574SV
- Additional Numbers: 6574SV
Installation Recommendations
- Prepare Tools: Trim removal tools, Phillips/flat screwdriver set, and a multimeter for verification.
- Safety: Disconnect the vehicle battery before starting work to reduce the risk of short circuits and protect electronic modules.
- Access: Remove the relevant trim or glovebox/center console panels to reach the OEM connector. Use plastic trim tools to avoid damaging clips and panels.
- Replacement: Unplug the old harness from the head unit and the USB socket. Route the new harness following the original cable path, secure with existing clips or cable ties, and connect both ends firmly.
- Verification: Reconnect the battery, power up the infotainment system and test USB data recognition and charging with a known-good device before reassembling all trim.
- Best Practice: Avoid sharp bends and pinching of the cable. Ensure connectors fully seat with audible click; inspect for any corrosion on the mating contacts.
Why This Part Most Often Fails
- Mechanical Wear: Repeated insertions and removals of USB plugs lead to connector fatigue and broken pins.
- Physical Damage: Caught or crushed wiring during seat or console adjustments can sever conductors.
- Moisture and Corrosion: Exposure to spilled liquids or humid conditions causes contact corrosion and intermittent faults.
- Poor Routing or Installation: Incorrect routing that allows rubbing against sharp edges causes insulation wear and short circuits.
- Manufacturing/Connector Fatigue: Solder joints or crimp connections may crack over many thermal cycles and vibrations.
Troubleshooting Tips
- If USB Is Not Recognized: Check connector seating, inspect for bent pins, and measure 5V supply at the socket with a multimeter.
- If Charging Is Slow: Verify the 5V supply is present and that data lines are intact; some head units negotiate charging current based on data line state.
- Intermittent Connection: Wiggle-test the cable and connectors with the head unit connected to locate a loose contact or broken conductor.
Suitable For
Recommended for mechanics and experienced DIY enthusiasts working on Citroën C4 B7 and vehicles listed as compatible (including Peugeot 308 as provided). Use the product codes 9671138380 and 6574SV to confirm the correct harness when searching parts catalogues or service documentation.
Note
When fitting this replacement harness, follow vehicle-specific disassembly procedures and torque/fastening recommendations from the manufacturer to avoid damage to trim and electronic components.
