Checking the floats and wires

Check that the floats in the fuel gauge sensors have not stuck.

Check the wire inside the fuel tank, between the two sensors, for short circuit to voltage supply as described in Short-circuit to supply voltage. Permanent faults , short circuit to ground as described in Short-circuit to ground, permanent faults and open circuit as described in Open-circuit, permanent faults .

Do the necessary corrective action.

Additional information: 

• For information on signals and additional values, see Signal specification and Signal specification
• To access/replace fuel gauge sensors, see Left fuel gauge sensor and Right side fuel pump with level sensor .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Floats, Fuel Level Sensors, And Wiring

Courtesy of VOLVO CARS OF NORTH AMERICA.