Seat Temperature Switch: Description and Operation

HEATED SEAT SWITCH AND LED INDICATORS

Each heated seat is controlled by a separate heated seat switch. Battery positive voltage is supplied to the heated seat switch by the appropriate door module.

When the heated seat is off and the heated seat switch HEAT/OFF button is pressed once, the door module supplies a ground through the heated seat high temperature indicator control circuit to the heated seat switch, illuminating the HI temperature indicator. When the switch is pressed a second time, the door module turns off the HI temperature indicator, then supplies a ground through the heated seat medium temperature indicator control circuit to the heated seat switch, illuminating the MED temperature indicator. When the switch is pressed a third time, the door module turns off the MED temperature indicator, then supplies a ground through the heated seat low temperature indicator control circuit to the heated seat switch, illuminating the LOW temperature indicator. After the switch is pressed the fourth time, the door module removes the ground, turning off the LOW temperature indicator.

When the BACK ONLY button is pressed once, the door module supplies a ground through the heated seat back only indicator control circuit to the heated seat switch, illuminating the BACK ONLY mode indicator. When the switch is pressed a second time the door module cancels the back only mode and removes the ground, turning off the BACK ONLY mode indicator.