Preparations For Compressor And Pressure Line Leak Check, Through 08/2012
Special tools and workshop equipment required
- Turbocharger Tester Kit :VAG1397A
- Pneumatic Repair Set :VAS6618A
- Vehicle Diagnostic Tester
When an appropriate entry is made in the event memory, you are prompted 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.
For the connection diagram with assignment of the pneumatic lines to the air cushions. Refer to CONNECTION DIAGRAM - PNEUMATIC SYSTEM .
- Remove the backrest cover. Refer to BACKREST COVER, REMOVING AND INSTALLING, MULTI-CONTOUR SEAT .
- Front seat released in the vehicle and folded forward with electrical harness connectors connected. Refer to FRONT SEAT, REMOVING AND INSTALLING .
Version with a Separate Check Valve and Restrictor on the Multi-contour Seat Control Module:
-- Disconnect the pneumatic line to the Driver Multi-contour Seat Control Module -J873- /Front Passenger Multi-contour Seat Control Module -J872- by pressing release ring on the check valve -1- in direction of -arrow A- and simultaneously removing the pneumatic line -2- in direction of -arrow B-.
-- Using hose and adapter pieces, as well as the Valve Block 1 in Passenger Side Rear Seat -N481-, connect the :VAG1397A with the pneumatic line coming from the compressor to the check valve -1-.
Version with an integrated check valve and restrictor in the Multi-contour seat control module:
The pneumatic line must be disconnected from the Multi-contour seat control module with an integrated check valve and restrictor. Refer to the Parts information.
-- Disconnect the pneumatic line -1- to the Driver Multi-contour Seat Control Module -J873- /Front Passenger Multi-contour Seat Control Module -J872- at the following location (refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING ):
a - 50 mm
-- Using hose and adapter pieces, as well as the Valve Block 1 in Passenger Side Rear Seat -N481-, connect the :VAG1397A with the pneumatic line coming from the compressor.
-- To connect, attach the :VAS6618/3 -1- to the pneumatic line.
Continuation for All Versions
To connect, insert the pneumatic lines into the :VAS6618/3 from both sides -A arrows-.
To release, push release rings in direction of -B arrows- and simultaneously remove pneumatic lines in direction of -C arrows-.
In one of the test steps in the "Guided Fault Finding", you are prompted to connect the :VAG1397A at the pneumatic line to the Valve Block 1 in Driver Seat -N475- /Valve Block 2 in Driver Seat -N476- or Valve Block 1 in Front Passenger Seat -N477- /Valve Block 2 in Front Passenger Seat -N478-.
-- Carefully release the retainer -arrow- and disconnect the pneumatic lines -1 and 2-.
-- Using hose and adapter pieces, as well as the Valve Block 1 in Passenger Side Rear Seat -N481-, connect the :VAG1397A with the pneumatic line -1- coming from the compressor.
-- Repeat the check on the pneumatic line coming from the compressor at the opposing valve block.
In one of the test steps in the "Guided Fault Finding" , you are prompted to connect the :VAG1397A directly to the compressor.
-- Carefully release the retainer -arrow- and remove the pneumatic line -1- from the compressor -2-.
Ignore item -3-.
-- Using hose and adapter pieces, as well as the :VAS6618/10 , connect the :VAG1397A with the compressor -1-.
-- Connect pneumatic lines following the leak check. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .