Fuel Level Sensor G , checking Audi A4 B7

Fuel Level Sensor G , checking

Special tools, testers and auxiliary items required

Scheme 208

1. Portable multimeter V.A.G 1526 B

Scheme 209

1. Connector test set V.A.G 1594 C

Test sequence

Sedan

1. Remove carpeting in luggage compartment.
2. Fold forward right rear seat backrest, if necessary.

Wagon

1. Remove left 1/3 backrest --> «72 - SEAT - FRAMES»(/audi/a4/b7-2004-2009/remont/gauges-instrument-panels/#body-interior) «72 - SEAT - FRAMES»(/audi/a4/b7-2004-2009/remont/gauges-instrument-panels/#body-interior-cabriolet) for BODY INTERIOR - CABRIOLET .
2. Remove left side luggage compartment trim and dirt tray --> «70 - INTERIOR TRIM»(/audi/a4/b7-2004-2009/remont/gauges-instrument-panels/#body-interior) «70 - INTERIOR TRIM»(/audi/a4/b7-2004-2009/remont/gauges-instrument-panels/#body-interior-cabriolet) for BODY INTERIOR - CABRIOLET .

All models

1. Unbolt locking flange cover in luggage compartment - arrows -.

1. Disconnect electrical harness connector - 1 - at locking flange.

Note. Ignore - 2 -.

Scheme 210

1. Connect hand multimeter V.A.G 1526 B between terminal - 2 - and - 3 - for resistance measurement.

Note. If measured value is 0 ohms there is a short circuit. If measured value is infinity ohms there is and open circuit in the wiring. To check resistance values for "tank full" or "tank empty" , the fuel delivery unit must be removed --> Fuel delivery unit, removing and installing and the sensor float must be placed in upper or lower end position. With fuel level sensor G removed, the following values are obtained because of the greater deflection of the floater arm