Quest Minivan XE V6-2960cc 3.0L SOHC MFI (VG30E) (1998)
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Wiper and Washer Systems: Description and Operation
Front Wiper and Washer System Description
WIPER OPERATION
The wiper switch is controlled by a lever built into the combination switch.
There are three wiper switch positions:
^
LOW speed
^
HIGH speed
^
INT ("S" through "F")
With the ignition switch in the ACC or ON position, power is supplied:
^
through 20 A fuse (No. (8), located in the fuse block)
^
to front wiper motor terminal (6) and
^
front wiper amplifier terminal (6).
Ground is supplied to front wiper amplifier terminals (4) and (5) through body grounds E3, E14 and E53.
Low and high speed wiper operation
When the wiper switch is placed in the LOW position, ground is supplied:
^
through terminal (8) of the front wiper amplifier
^
to front wiper motor terminal (2).
With power and ground supplied, the wiper motor operates at low speed.
When the wiper switch is placed in the HIGH position, ground is supplied:
^
through terminal (10) of the front wiper amplifier
^
to front wiper motor terminal (1).
With power and ground supplied, the wiper motor operates at high speed.
Auto stop operation
With wiper switch turned OFF, the front wiper motor will continue to operate until wiper arms reach windshield base.
When the wiper switch is placed in OFF position, ground is no longer supplied by the front wiper amplifier. Ground is now supplied through front
wiper motor terminal (4). When wiper arms reach base of windshield, front wiper motor ground is interrupted and the front wiper motor stops.
Intermittent operation
The front wiper motor operates the wiper arms one time at low speed at an interval of approximately 1 to 14 seconds. This feature is controlled by
the front wiper amplifier.
With the wiper switch in the INT position, and the front wiper amplifier cycles the front wiper motor. Ground is supplied in the same manner as
low speed wiper operation.
WASHER OPERATION
With the ignition switch in the ACC or ON position, power is supplied:
^
through 20 A fuse (No. (8), located in the fuse block)
^
to front washer motor terminal (1).
When the lever is pushed to the WASH position, ground is supplied:
^
to washer motor terminal (2)
^
from front wiper amplifier terminal (9), and
^
to amplifier terminals (4) and (5)
^
through body grounds E3, E14 and E53.
With power and ground supplied, the washer motor operates.
The front wiper motor is activated when the lever is pushed to WASH for 1 second or more. The motor operates at low for approximately 3
seconds. This feature is controlled by the front wiper amplifier in the same manner as intermittent operation.
