Leak Detection Pump -V144-, CHECKING VACUUM SUPPLY

WARNING: This page is about a different car, the 2014 Volkswagen Touareg, 2013 Volkswagen Touareg, 2012 Volkswagen Touareg, and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Turbocharger Tester Kit:VAG1397A
T-Connection: 251 201 346
6 mm hose

NOTE:

Leak Detection Pump -V144- installed location: inside the right rear wheel housing under the wheel housing liner.

-- Remove the right rear wheel and wheel housing liner.

-- Remove the vacuum line -1- from the Leak Detection Pump -V144-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the :VAG1397A with the T-piece and 6 mm hose between the vacuum line -1- and the Leak Detection Pump -V144- -2-.

-- Switch on the measuring range I (absolute pressure measurement).

-- Connect the Vehicle Diagnostic Tester and start the engine.

-- Select Guided Functions

-- Select "Check tank ventilation system for leaks".

-- Start the test.

-- During the test, pay attention to the display on the :VAG1397A .

The pressure must pulsate and must not rise above 0.700 bar (10.15 psi) (absolute pressure) during the test.

-- If the pressure rises above 0.700 bar during the test, the vacuum supply is too low. Check vacuum line to intake manifold for kinks or blockages.