Pacifica V6-3.8L VIN L (2005)
Seat Heater Sensor: Description and Operation
Two heated seat sensors are used per vehicle. One sensor is located in each heated seat cushion. The heated seat temperature sensors are Negative
Temperature Coefficient (NTC) thermistors. The 2nd row seat heated seat sensors are hardwired to the rear heated seat module, located in the 2nd row
center console.
The heated seat sensors cannot be repaired or adjusted and if found to be faulty, the complete heated seat cushion element must be replaced.
The heated seat temperature sensor is a NTC thermistor. When the temperature of the seat cushion cover rises, the resistance of the sensor decreases. The
heated seat module supplies five-volts to one side of each sensor, and monitors the voltage drop through the sensor on a dedicated return circuit. The
module uses this temperature sensor input to monitor the temperature of the seat and regulate the 12v current flow to the heated seat elements
accordingly.