Mitsubishi MOTORS Laser 1991, Руководство по обслуживанию, Страница: 254 / 320

WIPER AND WASHER SYSTEM Troubleshooting
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When the wiper switch is placed in the LO
position with the ignition switch in the ACC or
ON position, wipers operate continuously at low
speed.
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Placing the wiper switch in the HI position
causes the wipers to operate at high speed.
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When the wiper switch is placed in the OFF
position, the cam contacts of wiper motor
causes current to flow through the auto wiper
stop circuit, allowing the wiper blades to cycle
before they reach to the stop positions.
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When the wiper switch is placed in the
position with the ignition switch in ACC or ON
position, the intermittent wiper relay is ener-
gized causing the intermittent wiper relay con-
tacts to close and open repeatedly.
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When the contacts are closed, the wiper motor
is energized.
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When the wiper motor is energized, the relay
contacts open; however, the cam contacts keep
the wiper motor energized until the wiper blades
return to their stop position.
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When the washer switch is turned ON, the
intermittent wiper relay contacts close causing
wipers to cycle two to three times.
1. Wipers do not operate.
Washer is either.
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Check multi-purpose. fuse
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Check ground.
2. Low-speed (or high-speed) wiper operation only
is inoperative.
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Check wiper switch.
3. Wipers do not stop.
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Check wiper motor.
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Check intermittent wiper relay.
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Check wiper switch.
4. Intermittent wiper operation is inoperative.
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Check terminal voltage of steering-column
switch (with a built-in intermittent wiper
relay) with the intermittent wiper relay ener-
gized.
Terminal
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Voltage
No.
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Check
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I
3
Intermittent wiper relay
or wiper switch
Intermittent wiper relay
(Normal)
(alternating)
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5. The length of pause for intermittent operation
cannot be varied.
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Check variable intermittent wiper control
switch.
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Check intermittent wiper relay.
6. Washer is inoperative.
Wiper is operative on washer-wiper opera-
tion.
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Check washer motor.
(2) Washer-wiper operation is inoperative also.
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Check washer switch.
7. Washer-wiper operation is inoperative.
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Check intermittent wiper relay.
NOTE
For information concerning the intermittent wiper
relay, refer to