Wiper and Washer Systems: Description and Operation
CIRCUIT DESCRIPTIONAll the function of the front wiper & washer circuits are controlled by the position of the wiper and washer switch in the multifunction switch and ETACM.
Wiper Operation
When the wiper switch in INT and ignition switch in ON, the wiper motor relay coil energized through ETACM. Battery voltage applied to the wiper motor and the wiper motor is grounded at G02 through closed contact of the wiper motor relay. When the wiper switch is OFF and the wiper is not in rest position, the wiper motor is grounded at Gil through auto parking switch in the wiper motor and the wiper goes to the reset position.
When the wiper switch is in LO or HI, battery voltage is supplied to the wiper motor directly and grounded through G04.
Washer Operation
When the washer switch is pulled, the front wiper(controlled by the ETACM) wipes the window several times after the washer fluid sprays on to the front window.