Fuel Level Sensor -G-, Checking

Special tools and workshop equipment required

Procedure

TT Coupe:

-- Remove rear seat bench. Refer to Removal and Installation .

TT Roadster:

-- Remove the right side rear panel trim panel. Refer to Removal and Installation .

All Vehicles:

-- Unclip the retainers -arrows- of the cover for sealing flange.

Fig 1: Identifying Cover From Fuel Delivery Unit

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -arrow- from the locking flange.

Fig 2: Identifying Fuel Delivery Unit Connector

Courtesy of AUDI OF AMERICA, LLC

-- Connect multimeter between terminals -2 and 3- to measure resistance.

Fig 3: Fuel Delivery Unit Connector Pins

Courtesy of AUDI OF AMERICA, LLC

Fuel level sensor installed:

NOTE:

To check resistance values "tank full" or "tank empty", the fuel delivery unit must be removed and the sensor floater must be placed in upper or lower end position. Refer to FUEL DELIVERY UNIT .
If measured value is 0 Ω there is a short circuit. If measured value is there, there is an open circuit in the wiring.
With fuel level sensor removed, the following values are obtained because of the greater deflection of the floater arm:

Fuel level sensor removed:

-- Connect multimeter between terminals -3 and 4- to measure resistance.

Fuel level sensor installed or removed:

Assemble in reverse order of disassembling. Note the following:

TT Coupe:

-- Install rear seat bench. Refer to Removal and Installation .

TT Roadster:

-- Install the right side rear panel trim panel. Refer to Removal and Installation .