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Diagnostic Manual, Body and Accessories,
Volume 1.1

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3.3 Models 170, 210 > Pneumatic System Equipment (PSE) > 11 Diagnosis - Function Test (Retractable Rear Head Restraint)

Diagnosis - Function Test (Retractable Rear Head Restraint)

Preparation for Test:
1. Check fuses F1-14, F1-22, F4-3, F4-5 ok,
2. Battery voltage 11 - 14 V.
3. Ignition: ON
4. Retractable rear head restraints extended up.

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

1.0 Retract rear head restraints. Press RHR unlocking switch (S6/1s3). Both retracable rear head restraints retract. Retractable rear head restraints do not retract and pump motor in PSE control module (A37) does not run.
23 1.0,
23 PSE/CL 1.0,
3.1 23 1.0-3.0

Retractable rear head restraints do not retract even though pump motor in PSE control module (A37) runs.
32 1.0,
33 PSE 4.0,
Mechanical fault in RHR.

1) Observe Preparation for Test, see 22.