Grand Cherokee 2WD V8-5.2L VIN Y (1998)
Battery Temperature Sensor: Description and Operation
SYSTEM OPERATION
The 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.