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Diagnostic Manual, Body and Accessories,
Volume 1.1

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3.2 Model 202 > Pneumatic System Equipment (PSE) > 11 Diagnosis - Function Test (Orthopedic Seat Backrest)

Diagnosis - Function Test (Orthopedic Seat Backrest)

Preparation for Test:
1. Model 202 up to 11/94: Check fuses F3-33 and F3-35 ok,
2. Model 202 as of 12/94: Check fuses F1-24 and F1-27 ok,
3. Battery voltage 11 - 14 V.
4. Ignition: ON

Test step/Test scope Test condition Nominal value Possible cause/Remedy 1)

1.0 Changing backrest contour
in Z-direction (height) Turn adjuster to position 5.
In sequence select the three height adjust buttons.
Backrest must change shape noticeably in lumbar area. Backrest does not change shape and pump motor in PSE control module (A37/5) does not run.
23 PSE 1.0, 2.0,
PSE control module (A37/5).

Backrest does not change shape even though pump motor in PSE control module (A37/5) runs.
32 PSE 3.0,
32 1.0

1.1 Changing backrest contour
in X-direction (intensity). Turn adjuster slowly from position 0 to position 5 at least 5 times. Backrest must change shape noticeably in lumbar support area. Backrest does not change shape and pump motor in PSE control module (A37/5) does not run.
23 PSE 1.0, 2.0,
PSE control module (A37/5).

1.2 Changing backrest contour
side bolster pressure. Use side bolster rocker switch to change pressure form minimum to maximum 5 times. Backrest must change shape noticeably in lumbar support area. Backrest does not change shape even though pump motor in PSE control module (A37/5) runs.
32 PSE 3.0,
32 1.0

1) Observe Preparation for Test, see 22.