Multi-contour seat (MCS), diagnosis, function check

AD80.20-P-3004A

Multi-contour seat (MCS), diagnosis, function check

7.3.97

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Ignition: ON

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Battery voltage 11-14 V

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Fuses in order

Multi-contour seat (MCS), diagnosis, advanced information

AD80.20-P-2004A

Function check

Test step/Scope of test

Operation/Requirement

Specified value

Possible cause/Remedy

1

Adjustment of backrest contour in X-direction (intensity of lower and upper air cushion)

Slowly adjust pressure regulator for upper or lower air cushion at least 5 times alternating from minimum position to maximum position.

Backrest contour must adjust noticeably in lumbar area

Backrest contour does not adjust and pump motor of PSE control module (combined) (A37) does not start up.

Pneumatic system equipment variant coding incorrect

PSE (A37)

Backrest contour does not adjust, even though pump motor of PSE control module (combined) (A37) runs.

AD80.20-P-8004-01A

AD80.20-P-8004-01B

AD80.20-P-8000-09A

2

Adjustment of backrest contour lateral support

Slowly adjust toggle switch for lateral support at least 5 times from minimum position to maximum position.

The lateral support of the backrest contour must change noticeably.

The backrest contour does not change and the pump motor of PSE control module (combined) (A37) does not start up.

PSE variant coding incorrect

PSE (A37)

Backrest contour does not change, even though pump motor for PSE control module (combined) (A37) runs.

AD80.20-P-8004-01C

AD80.20-P-8000-09A

3

Adjustment of squab length

Model 129 only

Adjust pressure regulator for squab length at least 5 times from minimum position to maximum position.

Squab length must change noticeably

Squab length does not change and pump motor of PSE control module (combined) (A37) does not start up.

PSE variant coding incorrect

PSE (A37)

Squab length does not change, even though pump motor of PSE control system (combined) (A37) runs.

AD80.20-P-8004-01D

AD80.20-P-8000-09A