Where is the outside temperature sensor located?
1 Answers
Typically, the outside temperature sensor is installed at the front bumper grille. Its main function is to provide the ECU with the temperature signal outside the vehicle cabin. Composition and working principle of the outside temperature sensor: It usually consists of three parts: a sensing element, a conversion element, and a measurement circuit. The sensing element is the part that directly senses (or responds to) the measured quantity, converting the measured quantity into a non-electrical quantity or other quantity that has a definite relationship with the measured quantity through the sensor's sensing element. The conversion element then transforms the non-electrical quantity into an electrical parameter. The measurement circuit processes the electrical parameter input from the conversion element and converts it into measurable electrical quantities such as voltage, current, or frequency for display, recording, control, and processing. The working principle of the automotive outside temperature sensor is to detect the atmospheric temperature, transmit the detected temperature to the engine's ECU, and convert it into an electrical signal to determine the temperature setting of the automatic air conditioning, adjusting it to the most suitable temperature without manual intervention. Consequences of a faulty outside temperature sensor: In most vehicles, when an outside temperature sensor fails, the temperature display on the dashboard will be abnormal. This can lead to a distorted air-fuel ratio in the engine, causing the air conditioning system to malfunction or stop working altogether.
