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Home >> Audi >> 2004 >> A8 >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> 4.2L - Generic Scan Tool, Engine Code(S): BFM >> 20 - Fuel Supply >> Fuel Level Sensor, Servicing >> Fuel Level Sensor 2, Checking >> Fuel Level Sensor 2, Checking
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Fuel Level Sensor 2, Checking

Special tools, testers and auxiliary items required 

Fig 1: Special Tool - Multimeter V.A.G 1526 A
GW00000419Courtesy of VOLKSWAGEN UNITED STATES, INC.
Fig 2: Identifying V.A.G 1594 A Adapter Set
GW00000156Courtesy of VOLKSWAGEN UNITED STATES, INC.

Test Sequence 

Fig 3: Removing/Installing Cover For Right Locking Flange
GW00028637Courtesy of VOLKSWAGEN UNITED STATES, INC.
Fig 4: Disconnecting/Connecting Electrical Connectors At Right Locking Flange
GW00028638Courtesy of VOLKSWAGEN UNITED STATES, INC.
Fig 5: Connecting Multimeter Between Terminal Of Connector For Resistance Measurement
GW00028692Courtesy of VOLKSWAGEN UNITED STATES, INC.
Sensor installed Sender at lower stop Sender at upper stop
Fuel Level Sensor 2 G169 approx. 750 Ω approx. 55 Ω
NOTE:

With sender for fuel gauge removed, the following values are obtained because of the great bending of floater arm:

Sender removed Sender at lower stop Sender at upper stop
Fuel Level Sensor 2 G169 approx. 990 Ω approx. 55 Ω