Preparations For Compressor and Pressure Line Leak Check

Preparations for Compressor and Pressure Line Leak Check

• When an appropriate entry is made in the event memory, you are prompted in "Guided Fault Finding" to perform a leak check.

• Then the preparations for this leak test are described that must be carried out directly in the rear 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

• Multi-contour seat released in the vehicle and folded forward with electrical harness connectors connected. Refer to => [ Multi-contour Seat ] Multi-Contour Seat.

In one of the test steps in the "Guided Fault Finding", you are prompted to connect the turbocharger tester (V.A.G 1397A) at the pneumatic line to the valve blocks (N480) / (N482) and (N525) / (N526).






- Disconnect the pneumatic line - 1 - to the valve block 1 in driver side rear seat (N479) / Valve block 1 in passenger side rear seat (N481) at the following locations, refer to => [ Disconnecting and Connecting Pneumatic Lines ] Disconnecting and Connecting Pneumatic Lines.

• a = 30 mm

- Connect the turbocharger tester (V.A.G 1397A) to the pneumatic line from the compressor - 1 - using the hose, the adapter from the surge tank (VAS 6618/10).






- For the connection, attach the connecting sleeve (VAS 6618/2) to the pneumatic line.

2 Valve block 1 in driver side rear seat (N479) / valve block 1 in passenger side rear seat (N481)

• For the connection, insert pneumatic lines in the connecting sleeves (VAS 6618/2) of both sides - A arrows -.






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

In one of the test steps in the "Guided Fault Finding", you are prompted to connect the turbocharger tester (V.A.G 1397A) at the pneumatic line to valve block 1 in driver side rear seat (N479) / valve block 1 in passenger side rear seat (N481) and valve block 3 in driver side rear seat (N525) /valve block 3 in passenger side rear seat (N526) or valve block 2 in driver side rear seat (N480) / valve block 2 in passenger side rear seat (N482).






- Disconnect the pneumatic line - 3 -to the valve block 2 in driver side rear seat (N480) / valve block 2 in passenger side rear seat (N482) or valve block 3 in driver side rear seat (N525) / valve block 3 in passenger side rear seat (N526) - 2 - at the following locations, refer to=> [ Disconnecting and Connecting Pneumatic Lines ] Disconnecting and Connecting Pneumatic Lines.

• a = 40

• Ignore - 1 -.

- Connect the turbocharger tester (V.A.G 1397A) to the pneumatic line from the compressor - 1 - using the hose, the adapter from the surge tank (VAS 6618/10).






- Repeat the check on the pneumatic line coming from the compressor at the opposing valve block.

2 Valve block 2 in driver side rear seat (N480) / valve block 2 in passenger side rear seat (N482) or valve block 3 in driver side rear seat (N525) / valve block 3 in passenger side rear seat (N526)

In one of the test steps in the "Guided Fault Finding", you are prompted to connect the turbocharger tester (V.A.G 1397A) directly to the compressor.






- Disconnect the pneumatic line - 1 - to the compressor - 2 - at the following locations, refer to => [ Disconnecting and Connecting Pneumatic Lines ] Disconnecting and Connecting Pneumatic Lines.

• a = 50 mm

• Ignore - 3 and arrows -.

- Connect the turbocharger tester (V.A.G 1397A) using wire and adapter pieces such as the pressure differential reservoir (VAS 6618/10) with the compressor - 2 - pneumatic wire - 1 -.






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