Principles of Operation

Principles of Operation

Power Seat (Driver Only)
The six-way power seat feature moves the seat in six possible directions. The base of the seat can be moved forward or backward and the front or back of the base cushion can be moved up and down independently. The power seat feature operates independent of the position of the ignition key

The power seat motors are hardwired to the seat control switch. The circuits are normally closed to the seat control switch. Each circuit (power and ground) is switched to power or ground (depending on which direction is commanded) when an adjustment position is selected.

Heated Seats (Front Only)
The driver and front passenger heated seats share a common battery and ignition feed. A shared ground source supplies the heated seat control switches and the heated seat modules. When the heated seat control switch is pressed with the ignition switch in RUN or START, a momentary ground signal is sent to the heated seat module. The heated seat module then supplies power to the heating element circuit. The cushion element and seat backrest element are wired in series and powered by the same output. The heated seat module supplies voltage to an indicator circuit in the heated seat switch to indicate an ON state. The heated seat module remains on until the heated seat control switch is pressed and a momentary voltage signal is received, or until 10 minutes expire. If the ignition source is removed from the module, the heated seat module enters an OFF state and does not return to ON until the switch is once again pressed with the ignition switch in RUN or START. The heated seat module is designed to heat the seat to 37.5 °C (99.5 °F) and maintain the temperature until time-out or until switched off. This temperature is maintained by the heated seat module monitoring the temperature sensor, located in the seat cushion element, and adjusting the current flow to the heating elements.