Liberty Sport 4WD L4-2.4L VIN 1 (2002)
Seat Heater Switch: Description and Operation
Fig.1 KJ Power/Heated Seat
DRIVER SEAT HEATER SWITCH
The heated seat switches are located on the outboard cushion side shield of the driver and passenger front seats. The two, three-position rocker
type switches provide a resistor multiplexed signal to the Heated Seat Module through separate hard wired circuits. Each switch has an OFF, Low
and High setting. Each switch contains two light emitting diodes (LED), one for each High and Low setting to let the occupant know that the seat
heater system is ON.
The heated seat switches and their LED's cannot be repaired. If either switch is faulty or damaged the entire switch must be replaced.
There are three positions that can be selected with each of the heated seat switches: OFF, Low, and High. When the front of the switch rocker is
fully depressed, the High position is selected and the high position LED indicator illuminates. When the rear of the switch rocker is fully
depressed, the Low position is selected and the low position LED indicator illuminates. When the switch rocker is depressed a second time in
either direction, OFF is selected and both LED indicators are extinguished.
Both switches provide separate resistor multiplexed hard wire inputs to the Heated Seat Module to indicate the selected switch position. The
heated seat module monitors the switch inputs and responds to the heated seat switch status messages by controlling the output to the seat heater
elements of the selected seat. The Low heat position set point is about 36 °C (97 °F), and the High heat position set point is about 41 °C (105 °F).
