Heated Seats
When LO is pressed on the heated seat switch and the ignition switch is in RUN, the heated seat control module LO input terminal is momentarily grounded. This causes the seat control module to apply voltage to the seat heaters. The heated seat control module monitors the seat surface temperature through a thermistor located in the center seat bottom. The heated seat control module maintains the seat surface temperature at a pre-determined temperature.Heated seat operation in the HI mode is similar to LO operation except the seat surface temperature is maintained at a higher predetermined temperature.
When the OFF switch is pressed, the heated seat control module's OFF input is grounded momentarily. The module reacts by turning OFF the voltage applied to the seat heaters. The module also turns OFF the heated seats whenever the ignition switch has been cycled OFF and then back to RUN.