Audi Workshop Service and Repair Manuals

Checking fuel gauge sender 2 -G169- Special tools and workshop equipment required

t  Hand-held multimeter -V.A.G 1526C-

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

Procedure –  Remove rear seat bench → Rep. gr.72. –  Unclip the retaining tabs -arrows- for the flange cover (left-side).

–  Unplug electrical connector -1- at flange.   Note Disregard -item 2-.

Vehicles up to 10.2004:   Note In vehicles with two-wire sender, 2 contacts are connected in the electrical connector for fuel gauge sender 2 -G169-. –  Connect multimeter (resistance test) between contacts -1- and -2-. With fuel gauge sender 2 -G169- installed: l  Sender at lower stop: 265 ... 291 Ω. l  Sender at upper stop: 47.5 ... 73 Ω.   Note t  In order to test the maximum and minimum values for „tank full“ and „tank empty“, remove the fuel gauge sender 2 -G169- → Chapter and move the float all the way to its top or bottom position. 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  The following values are obtained with the fuel gauge sender 2 -G169- removed, due to the greater travel of the float arm: With fuel gauge sender 2 -G169- removed: l  Sender at lower stop: approx. 299 Ω. l  Sender at upper stop: approx. 36.6 Ω. Assembly is carried out in the reverse order; note the following: –  Install rear seat bench → Rep. gr.72.

Vehicles from 10.2004 onwards:   Note In vehicles with three-wire sender, 3 contacts are connected in the electrical connector for fuel gauge sender 2 -G169-. –  Connect multimeter (resistance test) between contacts -1- and -2-. With fuel gauge sender 2 -G169- installed: l  Sender at lower stop: approx. 270 Ω. l  Sender at upper stop: approx. 70 Ω.   Note t  In order to test the maximum and minimum values for „tank full“ and „tank empty“, remove the fuel gauge sender 2 -G169- → Chapter and move the float all the way to its top or bottom position. 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  The following values are obtained with the fuel gauge sender 2 -G169- removed, due to the greater travel of the float arm: With fuel gauge sender 2 -G169- removed: l  Sender at lower stop: approx. 286 Ω. l  Sender at upper stop: approx. 50 Ω. –  Connect multimeter (resistance test) between contacts -2- and -3-. With fuel gauge sender 2 -G169- installed or removed: l  Sender in any position: approx. 340 Ω. Assembly is carried out in the reverse order; note the following: –  Install rear seat bench → Rep. gr.72.