Grand Voyager V6-3.3L VIN G Flex Fuel (1999)
Battery Temperature Sensor: Description and Operation
OPERATION
The temperature sensor, in the PCM, is used to determine the battery temperature. 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 battery temperature sensor is also used for OBD II diagnostics. Certain faults and OBD II monitors are either enabled or disabled depending
upon the battery temperature sensor input (example: disable purge and EGR, enable LDP). Most OBD II monitors are disabled below 20° F.
