Battery Temperature Sensor: Description and Operation
BATTERY TEMPERATURE SENSORThe battery temperature sensor is used to determine the battery temperature and control battery charging rate. This temperature data, along with data from monitored line voltage, is used by the PCM to vary the battery charging rate. System voltage will be higher at colder temperatures and is gradually reduced at warmer temperatures.
The sensor is located on the bottom of the battery tray, and makes contacts with the bottom of the battery.