SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4 cylinder 2.0 litre 4V Common rail TDI engine (2nd generation) | Fuel supply, gas operation | Fuel supply unit and fuel level sender

Checking fuel gauge senderG

Checking fuel gauge sender -G-

Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Manual multimeter -V.A.G 1526C-, see equivalent → Anchor

t	Auxiliary measuring tool -V.A.G 1594C-, see equivalent → Anchor

Operation process

–	Removing luggage compartment trim → trims / noise insulations; Rep. gr.70

–	Unscrew cover for flange -arrows-.

–	Extract the connectors -1- from the supply unit.

Note

Ignore -item 2-.

Fuel gauge sender -G- installed:

Note

Ignore -item 3-.

–	Connect the hand-held multimeter -VAG 1526C- to measure resistance between contacts -2- and -3-.

l	Sender on the lower limit: min. 53.5 … 59 Ω.

l	Sender on the upper limit: max. 300 … 310 Ω.

Note

t	If the value 0 Ω is achieved, a short circuit exists; the value ∞ Ω indicates an open circuit in the wire.

t	To test the maximum and minimum resistance values for „tank full“ and „tank empty“, remove the fuel delivery unit → Chapter and move the sender float all the way to its top or bottom position.

t	The following values are obtained with the fuel gauge sender removed on account of the greater deflection of the float arm:

Fuel gauge sender -G- removed:

l	Sender on the lower limit: about 271 … 296 Ω.

l	Sender on the upper limit: about 55 … 69 Ω.

The fuel level indicator sender -G- is defective if the following is determined:

t	great differences with the measuring values.

t	measuring value 0 Ω (short-circuit).

t	measuring value ∞ Ω (no open circuit).

t	electric lines in perfect condition.

–	Install the fuel level indicator sender -G- → Chapter.

SEAT Workshop Service and Repair Manuals