Preparations For Checking The Lumbar Support Air Cushion For Leaks
When an appropriate entry is made in the event memory, there is a prompt in "Guided Fault Finding" to replace the faulty lumbar support air cushion using the Pneumatic Repair Set - Surge Tank :VAS 6618/10 using the .
Then the preparations for this leak test are described that must be carried out directly in the seat.
Connection diagram with assignment of the pneumatic lines to the air cushions. Refer to CONNECTION DIAGRAM - PNEUMATIC SYSTEM .
Special tools and workshop equipment required
- Vehicle Diagnostic Tester, not illustrated
- Pneumatic Repair Set :VAS 6618A , not illustrated
Procedure
- The backrest cover is removed. Refer to BACKREST COVER, REMOVING AND INSTALLING .
-- Before disconnecting, mark the allocation of the pneumatic lines to each other using a waterproof felt-tip pen.
-- Disconnect the pneumatic line to the corresponding lumbar support air cushion at the following locations. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .
1 -
Pneumatic Line to Upper Air Cushion
- -a- = 100 mm
2 -
Pneumatic Line to Center Air Cushion
- -b- = 100 mm
3 -
Pneumatic Line to Lower Air Cushion
- -c- = 100 mm
-- To connect, attach the connecting sleeves from the Pneumatic Repair Set Pneumatic Repair Set :VAS 6618 to the pneumatic lines.
To connect, insert the pneumatic lines in the Pneumatic Repair Set - Exterior Connector 6x4 :VAS 6618/2 from both sides -A arrows-.
To release, push the release rings -B arrows- and simultaneously remove pneumatic lines -C arrows-.
-- Connect the Pneumatic Repair Set - Surge Tank :VAS 6618/10 on the pneumatic line -1- to the lumbar support air cushion.
The illustration aboveshows the pneumatic line to the lumbar support upper air cushion.
-- Connect the pneumatic lines following the leak test. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .