Audi Workshop Service and Repair Manuals

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

t  Hand-held multimeter -V.A.G 1526 B-

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

Test sequence –  Fold down the rear seat bench or remove the rear seat bench → Rep. Gr.72. –  Fold back lining under rear set. –  Turn cover for fuel gauge sender in -direction of arrow- and detach cover.

–  Unplug electrical connector -arrow- at flange.

Vehicles to 04.2002: –  Connect multimeter (resistance measurement range) between contacts -1- and -2-. –  Check resistance in relation to fuel tank level.

20 ltr. fuel tank		34 ltr. fuel tank
Resistance Ω 1)	Content in ltr.	Resistance Ω 1)	Content in ltr.
54 2)	0	54 2)	0
70	1	70	2
83	2	83	4
96.6	3.5	96.6	7
120	5	120	11
170	10	170	18
220	15	220	26
270	19	270	33
290 2)	20	290 2)	34
l  1) Tolerance ± 5 Ω l  2)The value is only attained with sender removed due to the increased travel of the float arm. Value with sender installed: approx. 58 Ω for “Tank empty” or approx. 287 Ω for “Tank full”.

Vehicles from 05.2002: –  Connect multimeter (resistance measurement range) between contacts -1- and -2-. –  Check resistance in relation to fuel tank level.

20 ltr. fuel tank		34 ltr. fuel tank		42 ltr. fuel tank
Resistance Ω 1)	Content in ltr.	Resistance Ω 1)	Content in ltr.	Resistance Ω 1)	Content in ltr.
284.1 2)	0	284:1 2)	0	284.1 2)	0
261.7	2.0	273.0	2.0	278.5	2.0
243.8	3.0	250.4	4.0	261.7	4.0
230.5	4.5	223.9	7.0	237.2	7.0
208.5	6.0	193.0	11.0	208.5	12.0
157.8	11.0	140.3	18.0	146.2	22.0
110.2	16.0	100.1	25.5	100.1	32.0
84.3	20.0	68.5	32.5	72.5	40.0
68.5 2)	21.0	68.5 2)	34.0	68.5 2)	42.0
l  1) Tolerance ± 5 Ω l  2) Value is only attained with sender removed due to the increased travel of the float arm.