The 2007 Toyota Yaris ambient temperature sensor is installed in the front part of the condenser to detect the ambient temperature and control the air conditioner. The sensor is connected to the air conditioning amplifier and detects fluctuations in the ambient temperature. This data is used for controlling the room temperature. The sensor sends a signal to the air conditioning amplifier. The following diagram shows Toyota Yaris’07 Ambient Temperature Sensor Circuit and Wiring Diagram.