Audi Workshop Service and Repair Manuals

Checking fuel gauge sender -G- Special tools and workshop equipment required

t  Hand-held multimeter -V.A.G 1526C-

t  Auxiliary measuring set -V.A.G 1594C-

Test sequence –  Remove rear seat bench → Rep. Gr.72. –  Unscrew cover for flange (right-side) -arrows-.

–  Unplug electrical connector -arrow- at flange (right side of vehicle).

Vehicles up to 06.2001 –  Connect hand-held multimeter -V.A.G 1526C- to measure resistance between contacts -2- and -3-.

Sender installed	Sender at lower stop	Sender at upper stop
Fuel gauge sender -G-	approx. 65 Ω	approx. 280 Ω

Note t  If the resistance is 0 Ω, there is a short circuit. If the resistance is ∞ Ω, there is an open circuit in the wiring. t  In order to test the maximum and minimum resistance values for “tank full” and “tank empty”, remove the fuel gauge sender -G- → Chapter and move the float all the way to its top or bottom position. t  The following values are obtained with the fuel gauge sender -G- removed, due to the greater travel of the float arm:

Sender removed	Sender at lower stop	Sender at upper stop
Fuel gauge sender -G-	approx. 51 Ω	approx. 294 Ω

Vehicles from 06.2001 onwards –  Connect hand-held multimeter -V.A.G 1526C- to measure resistance between contacts -2- and -3-.

Sender installed	Sender at lower stop	Sender at upper stop
Fuel gauge sender -G-	295 … 305 Ω	56 … 68 Ω

Note t  If the resistance is 0 Ω, there is a short circuit. If the resistance is ∞ Ω, there is an open circuit in the wiring. t  In order to test the maximum and minimum resistance values for “tank full” and “tank empty”, remove the fuel gauge sender -G- → Chapter and move the float all the way to its top or bottom position. t  The following values are obtained with the fuel gauge sender -G- removed, due to the greater travel of the float arm:

Sender removed	Sender at lower stop	Sender at upper stop
Fuel gauge sender -G-	295 … 305 Ω	52.7 … 57.9 Ω

Assemble in reverse order.