Fuel Gauge: Locations

Fuel Gauge Components:

Fuel Gauge Diagrams:

Locations of components

3 Earthing point, facia
At the left-hand front speaker socket

20 Ignition switch
On the right-hand side of the steering Column

22A Fuse board
Behind the access panel in the glove compartment

46 Fuel level transmitter
In the fuel tank (terminals accessible from the luggage compartment)

47A Fuel gauge
In the section of the combined instrument containing the coolant temperature gauge, etc.

47B Fuel reserve warning lamp
In the combined instrument, on the circuit board for the indicating and warning lamps

65 Earthing point
Under the back seat

122 Eight-pole connector
Two at the EDU2 trip computer, in the combined instrument

159 Distribution terminal +15
In the electrical distribution box behind the glove compartment

210 EDU2 trip computer
In the combined instrument

Operation
The fuel gauge and the warning lamp for the fuel reserve keep the driver informed of how much fuel is left in the tank.

When the ignition switch is in the drive position, a positive supply is taken across fuse 13 and terminal +15 in the electrical distribution box to:

fuel gauge 47A in the combined instrument and through the level transmitter in the fuel tank to earth.

warning lamp for fuel reserve 47B and through the level transmitter in the fuel tank to earth.

Level transmitter 46 adjusts the voltage so that the fuel gauge reading will correspond to the level sensed by the transmitter float in the tank.

Since the level transmitter shall also provide the EDU II trip computer with information, the cable between the transmitter and the fuel gauge is connected via the trip computer jumper between pins 7 and 8).

When the fuel content of the tank has dropped to about 10 dm3 (liters), the fuel reserve warning lamp will be earthed through the transmitter and the lamp will light up.

Fault-tracing hints
The fuel gauge and warning lamp will not be actuated until the ignition switch has been set to the drive position.

1. Check fuse 13 and check that the supply to it is live.
2. Check the bulb and check that the terminals on the circuit board for the warning and indicating lamps are live.
3. Check that the fuel gauge and fuel level transmitter terminals are live.
4. Check the connectors, the wiring and the earth connection of the fuel level transmitter.

Resistance readings for fuel level transmitter:
full tank: 2.6-3.8 ohm empty tank: 68.2-69.2 ohm