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Home >> Mercedes Benz >> 1990 >> 560SEC (126.045) V8-5.6L (117.968) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Vehicle Speed Sensor >> Description and Operation >> A/C Input
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A/C Input

Hall Sensor Location:





PURPOSE

The Hall sensor provides vehicle speed information to the ACC control unit.

LOCATION

The Hall sensor is located behind the speedometer.

OPERATION

With all functions of the blower switch, except when the system has switched to 100% recirculated air, the control voltages are influenced by the driving speed of the vehicle by the Hall sensor. Up to a speed of 124 mph (200km/h), the voltage is continuously reduced (0.6 volt maximum reduction).
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