•  The heater system warms the heater core using the engine coolant warmed while the engine is operating, and warms the air passing through the heater core.

•  The heater system intakes a portion of the warmed engine coolant into the heater core and circulates it.

•  The heater system consists of the following parts.

L.H.D.

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R.H.D.

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1.  Engine coolant flows into the heater core by the operation of the water pump.

2.  When the warmed engine coolant circulates in the heater core, the heater core warms up.

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3.  The air passing through the heater core is warmed by heat exchange.

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