Preparations For Compressor And Pressure Line Leak Check

When an appropriate entry is made in the event memory, there is a prompt in "Guided Fault Finding"  to perform a leak check using the Vehicle Diagnostic Tester. Then the preparations for this leak test are described that must be carried out directly in the front seat.

• Connection diagram with assignment of the pneumatic lines to the air cushions. Refer to CONNECTION DIAGRAM - PNEUMATIC SYSTEM, SPORT SEATS .

Special tools and workshop equipment required 

• Digital Pressure Sensor: VAG1397B 
• Hose Cutting Pliers: VAS6228 
• Pneumatic Repair Set: VAS6618 A 
• Vehicle Diagnostic Tester

Procedure 

-- Remove the backrest cover. Refer to BACKREST COVER, REMOVING AND INSTALLING .

• To check, the pneumatic line from the compressor is not disconnected at the connection, but is disconnected by the described procedure. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .

-- To connect during the leak test, insert the pneumatic lines into the : VAS6618/2  from both sides -A arrows-.

Fig 1: Attach The Connecting Sleeves

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-- To release, push the release rings -B arrows- and simultaneously remove pneumatic lines -C arrows-.

In one of the test steps in the "Guided Fault Finding"  , it is prompted to connect the : VAG1397A  at the pneumatic line to the -N209- / -N210-.

-- Disconnect the pneumatic line -arrow- to the valve block.

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-- Using hoses and adapter pieces from the : VAS6618A  , connect the : VAG1397A  to the pneumatic line -2- coming from the compressor.

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1 -  Valve Block - N209- /Valve Block - N210-

TIP:

To connect the pneumatic lines, make an adapter hose from the : VAS6618 A  .

-- Connect the pneumatic lines following the leak test. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .