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Home >> Ford >> 2012 >> Focus S, Standard Trans, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Climate Control System -- Electric) >> Description and Operation >> Climate Control System - System Operation and Component Description >> Component Description >> Cabin Coolant Heater
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Cabin Coolant Heater

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The cabin coolant heater has both low voltage and high voltage electrical connections. The low voltage circuits are used for controlling the unit, while the high voltage circuits are used for heating the coolant. The cabin coolant heater uses electricity, or more accurately, the heat for resistance in electrical circuits to quickly raise the temperature of the coolant to normal operating temperature.