Civic VP Sedan L4-1590cc 1.6L SOHC MFI (1999)
Evaporator Temperature Sensor / Switch: Description and Operation
The A/C thermostat is located on the evaporator housing. The A/C thermostat turns OFF the A/C compressor clutch if the temperature at the evaporator
goes below 3°C (37°F). This prevents condensation from freezing on the evaporator fins and blocking the air delivery into the passenger compartment.
The blower motor will keep running when the sensor turns OFF the compressor. If the temperature goes below 3°C (37°F) turning OFF the A/C
thermostat, ground will be removed from the condenser fan relay. This will deenergize the relay and remove voltage from voltage from the condenser fan
motor causing the fan to stop running.
