Description
Fuel Relay G.Cartier 9629945980 BITRON 240109 for Citroën and Peugeot vehicles.
This fuel pump relay is a direct-fit electrical component designed for selected Citroën and Peugeot models. Built to control the power supply to the fuel pump, it ensures reliable priming during ignition and stable fuel delivery while the engine runs. The relay matches common OE reference numbers used in Stellantis applications and is suitable for professional workshops and experienced DIY mechanics searching by part number (e.g. 9629945980, 240109, 19207L).
Technical Information
- Manufacturer: G.Cartier / Bitron
- Model: Citroën Xsara Picasso; Peugeot 607
- Product Codes: 9629945980; 240109; 19207L
- Other Numbers: Common Stellantis OE references used on relevant models
Function and Application
The fuel pump relay supplies switched battery voltage to the electric fuel pump. When the ignition is turned on, the engine control unit (or ignition circuit) energizes the relay coil to close the internal contacts and feed the pump. A correctly functioning relay is essential for initial fuel system priming, engine start-up, and steady fuel pressure during operation.
Installation Recommendations
- Always disconnect the vehicle battery before starting work to avoid short circuits and protect the vehicle electronics.
- Locate the relay in the vehicle’s fuse/relay box (engine bay or interior relay panel depending on model). Refer to the vehicle’s fusebox diagram to identify the correct relay position.
- Remove the old relay by pulling it straight out. Compare pin layout and part numbers to ensure compatibility.
- Fit the new relay firmly into the socket, reinstall any covers, reconnect the battery and verify operation by turning the ignition on and checking for fuel pump priming and successful engine start.
- If the relay socket shows corrosion or damaged terminals, clean or repair the connector before fitting the new relay to ensure reliable contact.
Common Failure Reasons
- Wear of internal contacts from repeated switching cycles, leading to increased resistance or open circuit.
- Overheating caused by poor contact, electrical overload or a weak/aging relay coil.
- Corrosion or moisture ingress in the relay socket or connector causing intermittent operation or failure.
- Associated electrical faults such as a failing fuel pump, wiring short, or blown fuse can increase stress on the relay and ultimately cause failure.
- Intermittent starting, audible clicking from the relay area, or loss of fuel pressure are common symptoms indicating relay issues.
Recommendation
Replace the relay with the matching part number and inspect the wiring and fuse related to the fuel pump circuit. Use correct OE references when ordering to avoid fitment issues. For workshop installations, verify fuel pump current draw after replacement to ensure the rest of the circuit is functioning correctly.
