Chrysler Conquest 1988 Service Manual page 223

WIPER AND WASHER SYSTEiVl
- Troubleshootina
8-211
OPERATION
Wiper Operation
NOSKHBB
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When the wiper switch is at "ON" with the
ignition switch at either "ACC" or "ON", current
flows through fuse No. 10, stay switch, wiper
motor, wiper switch and ground, the wiper
operate.
Wiper Automatic Stopping Operation
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When the wiper switch is set at "OFF" to stop
the wipers, current flows through the wiper
motor, wiper switch, intermittent wiper relay
(contacts), wiper motor (cam contacts), and
ground, causing the wiper motor to continue
operation until the wiper blade returns to its park
positions.
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Once the wiper blade has reached park position,
the wiper motor cam moves to open its con-
tacts. This interrupts flow of current to ground,
and the wiper motor stops.
Wiper Intermittent Operation
With the ignition switch at "ACC" or "ON",
battery voltage is applied to the intermittent
wiper relay through fuse No. IO.
When the wiper switch is at "INT", current
flows through the intermittent wiper relay, wiper
switch, and ground, and the wiper relay internal
contacts close and open repeatedly.
While the contacts are closed, current flows
through the stay switch, wiper motor, wiper
switch, intermittent wiper relay (contacts), and
ground, causing the wiper motor to operate.
When the wiper motor starts operating, the
relay internal contacts open, causing current to
flow through the wiper motor (cam contacts),
and ground. This keeps the wiper motor operat-
ing until the wiper blades return to their park
positions.
Once the wiper blades have reached park
positions, the wiper motor cam moves to open
its contacts. This interrupts flow of current to
ground so the wiper motor stops.
TROUBLESHOOTING HINTS
1. Wipers do not operate
1) Washer also does not operate
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Check fuse.
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Check for ground connection.
2. Wipers do not operate in intermittent mode
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Check intermittent wiper relay terminal volt-
age with relay energized.
Terminal Voltage Check location
2
ov Wiper switch
12v
Intermittent wiper
relay
Changes betweeen -(Normal)
OVand 12V
repeatedly
3. Wipers fail to stop
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Check wiper motor.
Washer Operation
When the washer switch is "ON", with the ignition
switch in either "ACC" or "ON", current flows
through fuse No. 10, washer motor, washer switch,
and ground; the washer motor operates.