Fuel gauge shows empty, low fuel light on, but the tank is full. Diagnosis with PDF: The diagram will show the fuel sender unit (capteur de niveau) has 3 wires: 5V supply from BSI, earth (MC), and signal return. Using the PDF, locate the 1320 circuit (supply) and 1322 (signal). Test voltage between pin 2 and ground. The PDF reveals that the BSI expects 0.5V (empty) to 4.5V (full). If signal wire is shorted to ground (a common rodent damage area under rear seat), you get 0V.
There are several sources where you can find a Peugeot 308 wiring diagram PDF: peugeot 308 wiring diagram pdf
Full CAN (Controller Area Network) for engine/ABS and VAN for body electronics. Fuel gauge shows empty, low fuel light on,
Located next to the battery, protecting high-current circuits like the engine control and starter. Test voltage between pin 2 and ground
– Modern 308s use a BSI that controls nearly everything. The diagram shows BSI internal connections but does not explain programming or reset procedures. You may still need Diagbox software.
When reading a Peugeot 308 diagram, you will frequently encounter these standardized codes and sections:
No products in the cart.