Fuel Level Sensor 2 -G169-, CHECKING

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Audi Q7, 2014 Audi Q7, 2013 Audi Q7, 2011 Audi Q7, and 2010 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Analog/Digital Multimeter FLU83III
Connector Test SetVAG1594D
Carpet knife, commercially available

Procedure

-- Remove the left single seat and the left 2/3 seat bench seat cushion in the second row of seats, refer to Seat Frames .

WARNING:

Risk of injury.

Wear safety gloves

-- Cut the floor covering along the perforation -arrows- on the left side with a carpet knife -1-.

Fig 1: Cut The Floor Covering Along The Perforation

Courtesy of AUDI OF AMERICA, LLC

-- Fold carpet cut-out to side in direction of -arrow-.

Fig 2: Identifying Locking Flange Cover - Tightening Specifications

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-- Remove the nuts -1 to 4- and remove left locking flange cover.

-- Disconnect the connector -arrow- on the left locking flange.

Fig 3: Connecting Connector -Arrow- At Left Locking Flange

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Ignore items -2 and 3-.

-- Connect multimeter between terminals -2 and 3- to measure resistance.

Fig 4: Fuel Level Sensor 2 Components Location

Courtesy of AUDI OF AMERICA, LLC

Fuel level sensor 2 -G169- is installed:

Sensor at lower stop: 760 to 842 Ω.
Sensor at upper stop: 67 to 86 Ω.

NOTE:

If measured value is 0 Ω there is a short circuit. If measured value is ∞ Ω there is and open circuit in the wiring.

To check resistance values "tank full" or "tank empty", the Fuel Level Sensor 2 -G169- must be removed (Refer to Fuel Level Sensor 2 -G169-, REMOVING AND INSTALLING .) and the sensor floater must be placed in upper or lower end position.

With Fuel Level Sensor 2 -G169- removed, the following values are obtained because of the greater deflection of the floater arm:

Fuel Level Sensor 2 -G169- is removed:

Sensor at lower stop: approximately 990 Ω.
Sensor at upper stop: approximately 51 Ω.

Assemble in reverse order of disassembling. Note the following:

-- Install the left locking flange cover, refer to Figure.

-- Insert the frame into the floor covering, refer to the Parts Catalog and Interior Trim .

-- Install the left single seat and the left 2/3 seat bench seat cushion in the second row of seats, refer to Seat Frames .