Civic EX Sedan L4-1668cc 1.7L SOHC (VTEC) MFI (2001)
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Evaporator Temperature Sensor / Switch: Description and Operation
How the Circuit Works
The heater control panel controls the blower controls, air delivery, and A/C compressor controls automatically. With the ignition switch in ON (II),
battery voltage is supplied through fuse 14. The control unit is grounded at G502.
Evaporator Temperature Sensor
The evaporator temperature sensor is located on the evaporator housing. If the temperature at the evaporator gets too cold, the evaporator temperature
sensor sends a signal to the heater control panel to turn off the A/C compressor clutch. This prevents condensation from freezing on the evaporator fins
and blocking air delivery into the passenger compartment.
