Preparations For Checking Seat Bolster Adjuster For Leaks

Preparations for Checking Seat Bolster Adjuster for Leaks

• When an appropriate entry is made in the event memory, you are prompted in "Guided Fault Finding" to perform a leak check. Refer to 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 => [ Pneumatic Components on Multi-contour Seat, Connection Diagram ] Pneumatic Components on Multi-Contour Seat, Connection Diagram.

Procedure






• The backrest cover must be removed. Refer to => [ Backrest Cover ] Backrest Cover.

- Move the front seat all the way forward/up.

- Carefully release latch - arrow -, disconnect pneumatic lines - 1 - and - 2 -.

- For checking in the "Guided Fault Finding", connect the air cushion and valve block connections in a diagonal sequence as follows:






• For the connection of the pneumatic lines, prepare auxiliary hose from hose (VAS 6618/5) and connectors (VAS 6618/6) and (VAS 6618/7).

In one of the test steps in the "Guided Fault Finding", you are prompted to disconnect the pneumatic lines at the multi-contour seat control module (J872) / (J873).






- Before disconnecting, mark the assignment of the pneumatic lines to each other using a waterproof permanent marker.

- Disconnect pneumatic lines to the seat bolster inflation adjuster air cushions at the following points. Refer to => [ Disconnecting and Connecting Pneumatic Lines ] Disconnecting and Connecting Pneumatic Lines:

a 40 mm
b 40 mm

- For checking in the "Guided Fault Finding", connect the air cushion and valve block connections in a diagonal sequence as follows:






- For the connection, attach connecting sleeve (VAS 6618/3) to the pneumatic lines.






• For the connection, insert pneumatic lines in the connecting sleeves (VAS 6618/3) of both sides - A arrows -.

• Because of the danger of leaks, do not place the connecting sleeves in a bend in the hose.

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

- Connect pneumatic lines following the leak check. Refer to => [ Disconnecting and Connecting Pneumatic Lines ] Disconnecting and Connecting Pneumatic Lines.