what is a load sensor
Sun Load Sensor. The (EATC) electronic automatic temperature control system uses the sun load and in-cabin temperature sensor inputs to adjust blower speed and improve passenger comfort. The sun load sensor contains a photo diode that's sensitive to sun light. Resistance in the sensor increases as sun load increases. If the sensor is covered with a dash cover or a window sticker, the control module will receive inaccurate information and make incorrect adjustments.