REAR WIPERS AND WASHER OPERATION · 9

1989-Montero · wiper washer system · страница 9 из 19 · Открыть оригинал PDF ↗

REAR WIPERS AND WASHER OPERATION

Wiper Automatic Stopping Operation

* When the rear wiper switch is set at “OFF” to
stop the wiper, current flows through the rear
wiper motor, rear wiper switch, intermittent
rear wiper relay (contacts), rear wiper motor
(cam contacts), and ground, causing the rear
wiper motor to continue operation until the
wiper blede return to its park positions.
* Once the wiper blade has reached park posi-
tions, the rear wiper motor cam moves to
open its contacts. This interrupts flow of cur-
rent to ground. and the rear wiper motor
stops.

Wiper Intermittent Operation

With the ignition switch at “ACC” or “ON”,
battery voltage is applied to the intermittent
rear wiper relay through fuse No. 9.
When the rear wiper switch is at “INT”, cur-
rent flows through the intermittent rear wiper
relay, rear wiper switch, and ground, and the
intermittent rear wiper relay internal contacts
close and open repeatedly.
While the contacts are closed, current flows
through the rear wiper motor, rear wiper
switch, intermittent rear wiper relay (contacts),
and ground, causing the rear wiper motor to
operate.

TROUBLESHOOTING HINTS

1. Wipers do not operate

(I) Washer also does not operate
l Check fuse.

l Check for ground connection,
2. Wipers do not operate in intermittent mode
0 Check intermittent wiper relay terminal volt-
age with relay energized.

Таблица в оригинале

3. Wipers fail to stop
l Check wiper motor.

When the rear wiper motor starts operating,
the relay intermal contacts open, causing cur-
rent to flow through the rear wiper motor (cam
contacts), and ground. This keeps the rear
wiper motor operating until the wiper blade
return to their park positions.
Once the wiper blade has reached park posi-
tions, the rear wiper motor cam moves to
open its contacts. This interrupts flow of cur-
rent to ground so the wiper motor stops.

Rear washer operation

l With the ignition key at the “ACC” or “ON”
position, voltage is applied, through fuse No. 9
and the rear washer motor, to the rear washer
switch.
l When the rear washer switch is switched ON,
currenat flows to fuse No. 9, the rear washer
motor, the rear washer switch, and ground,
and the rear washer begins operation.

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