Chrysler Conquest 1988 Service Manual page 293

DEFOGGER TIMER
CIRCUIT DIAGRAM
ETACS - Defogger Timer
8-281
NOSQKAB
Defogger
relay
I
Remote controlled mirror
- -I
with defogger
* indicates stay switch
ECU
16Y3579
COMPONENT PARTS AND FUNCTION
Electronic Control Unit (ECU)
Ignition Switch (ON position)
Column Defogger switch
Switch
The defogger relay is controlled by the switch-on of transistor Tn. based
on input signals of the defogger switch, thus causing the defogger and
Remote-controlled mirror with defogger to operate for about 20 minutes.
in addition, when there is switch-on input, the buzzer is activated for
about 0.1 second by the switch-on of transistor Trz.
Sends HIGH signals to ECU (when ignition key is turned to ON).
Starts or resets the defogger timer.
This is an automatic-reset type switch; it is switched ON when pressed,
and switched OFF when released.
Defogger indicator light
Buzzer
Illuminates when the defogger relay is ON, and stops illumination when
it is OFF. Power is supplied, via fusible link (sub. 1) and the defogger relay
from the battery.
Activated by ECU when defogger switch ON (L) signal is input. Power is
supplied, when the ignition key is at ACC or ON, from fuse No.8.
The power for activation of the defogger is supplied, via fuse No.1 2, from
Defogger The defogger is conductive when the defogger relay is ON, and functions
to defog the rear hatch glass.