Checking fuel gauge sender 2 G169 - A5 up to model year 2011, A4 up to model year 2012, rest-of-world vehicles with four-wheel drive, USA vehicles with front-wheel drive/four-wheel drive — AUDI

Checking
fuel gauge sender 2
G169
- A5 up to model year 2011, A4 up to model year 2012, rest-of-world vehicles with four-wheel drive, USA vehicles with front-wheel drive/four-wheel drive
Special tools and workshop equipment required
Hand-held multimeter
V.A.G 1526E
Auxiliary measuring set
V.A.G 1594C
Assembly tool
T10118
Procedure
Note
The electrical wiring for the
fuel gauge sender 2
G169
is routed to the fuel pump flange along the inside of the fuel tank.
Remove rear seat bench
General body repairs, interior
Rep. gr.
72
Rear seats; Removing and installing seat bench/individual seats
.
Unscrew cover for flange
arrows
.
Release retainer catch with
assembly tool
T10118
and unplug electrical connector
2
on flange.
Unplug electrical connector
1
on flange.
To do so, slide catch
1
upwards
arrow A
and press release catch inwards
arrow B
.
With
fuel gauge sender 2
G169
installed:
Connect multimeter (resistance test) between contact
1
on connector
A
and contact
2
on connector
B
.
Tank empty: approx. 50 Ω.
Tank full: approx. 295 Ω.
Connect multimeter (resistance test) between contact
2
on connector
A
and contact
2
on connector
B
.
Tank empty: approx. 290 Ω.
Tank full: approx. 45 Ω.
Connect multimeter (resistance test) between contacts
1
and
2
on connector
A
.
Sender in any position: approx. 340 Ω.
With
fuel gauge sender 2
G169
removed:
Note
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.
The following values are obtained with the fuel gauge sender removed, due to the greater travel of the float arm:
Connect multimeter (resistance test) between contacts
1
and
2
.
Sender at lower stop: approx. 290 Ω.
Sender at upper stop: approx. 16 Ω.
Connect multimeter (resistance test) between contacts
1
and
3
.
Sender at lower stop: approx. 50 Ω.
Sender at upper stop: approx. 324 Ω.
Connect multimeter (resistance test) between contacts
2
and
3
.
Sender in any position: approx. 340 Ω.
Fuel gauge sender 2
G169
is defective in the following cases:
Large differences in test readings
Reading: 0 Ω (short circuit)
Reading ∞ Ω (open circuit)
No fault in electrical wiring
Install
fuel gauge sender 2
G169
Chapter
.
Install cover for flange
Fig.
.
Install rear seat bench
General body repairs, interior
Rep. gr.
72
Rear seats; Removing and installing seat bench/individual seats
.