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, COMFORT SEATS .
Special tools and workshop equipment required
- Digital Pressure Sensor :V.A.G 1397B
- Hose Cutting Pliers :VAS 6228
- Pneumatic Repair Set :VAS 6618 A
- Vehicle Diagnostic Tester
Procedure
- The backrest cover is removed. Refer to BACKREST COVER, REMOVING AND INSTALLING, STANDARD/SPORT SEAT .
- 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 Connecting Sleeves :VAS 6618/2 from both sides -A arrows-.
- 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 Turbocharger Tester Kit :V.A.G 1397B at the pneumatic line to the Valve Block 2 in Driver Seat -N476- / Valve Block 2 in Front Passenger Seat -N478-.
-- Disconnect the pneumatic line -arrow- to the valve block.
-- Using hoses and adapter pieces from the Pneumatic Repair Set :VAS 6618A , connect the Turbocharger Tester Kit :V.A.G 1397A or Digital Pressure Sensor :V.A.G 1397B to the pneumatic line -2- coming from the compressor.
1 - Valve Block 2 in Driver Seat -N476- / Valve Block 2 in Front Passenger Seat -N478-
TIP:
To connect the pneumatic lines, make an adapter hose from the Pneumatic Repair Set :VAS 6618 A .
-- Connect the pneumatic lines following the leak test. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .