Operation CHARM
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Mercedes Benz
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1988
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300SEL (126.025) L6-3.0L (103.981)
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Repair and Diagnosis
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Sensors and Switches
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Sensors and Switches - HVAC
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Ventilation Switch
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Testing and Inspection
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With A/C
With A/C
TESTING OF SWITCH FOR FRESH AIR-RECIRCULATING AIR (STARTING 07/81)
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Connect ohmmeter to terminal 3 and 4.
Switch 26
Nominal value
Push symbol (arrow, top) ON
= 0 to 1 Ohm
Push without symbol
(arrow. bottom) OFF
= Infinite Ohms