Kia Sorento 2001 General Information Manual page 1111

2001 > 1.8L DOHC >
Description
Rear window is equipped with heating elements that clear condensation, frost and light show. Baked inside
surface, heating elements, or grid lines, are connected to vertical buss bar lines that comprise an electrical
circuit.
When dash-mounted switch is pressed, electric current is supplied through defrost relay in fuse box of engine
compartment. Should rear glass not be cleared, switch must be pressed again for another 15 minutes heating
cycle.
Circuit operation
Battery voltage is always applied from "DEFOG (20A)" to one side of the rear defroster relay and the other side
of the relay is connected to the rear window defroster, mirror defroster and defroster indicator. The indicator
and defrosters is grounded permanently.
With the ignition switch "ON" position, battery voltage is applied to one side of the rear defroster relay coil and
the other side of rear defroster relay coil is connected to terminal P(P) of the ETWIS.
When the rear defroster switch is pressed, the ETWIS module senses the ground signal through terminal
A(Y/G), the rear defroster switch, and B wire, which grounds one side of the relay coil by activating the internal
solid state of ETWIS. The rear defroster relay energizes and applies battery voltage to the indicator and
defrosters until the ETWIS is deactivated.