Operation CHARM: Car repair manuals for everyone.

HVAC System - Automatic

EVAPORATOR TEMPERATURE SENSOR

The A/C system is protected by the evaporator temperature sensor. The sensor located on the evaporator core provides the HVAC control module with the surface temperature of the evaporator core. If the evaporator temperature sensor reads a temperature of 0°C (32°F), the HVAC control module will turn off the A/C compressor clutch until evaporator temperatures reach 2°C (36°F).