Previa Van RWD L4-148.8 2438cc 2.4L DOHC SC (2TZ-FZE) (1996)
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Wiper Motor: Description and Operation
Front Wiper and Washer
With the ignition SW turned ON, current flows through the FR-WIPER fuse to TERMINAL 18 of the front wiper and washer SW, TERMINAL 6 of
the front wiper control relay, and TERMINAL 5 of the front wiper motor.
1. LOW SPEED POSITION
With the wiper and washer SW turned to LO position, current flows from TERMINAL 18 of the wiper SW --> TERMINAL 7 --> TERMINAL
3 of the front wiper motor --> motor --> to GROUND and causes the wiper motor to run at low speed.
2. HIGH SPEED POSITION
With the wiper and washer SW turned to HI position, current flows from TERMINAL 18 of the wiper SW --> TERMINAL 13 --> TERMINAL
2 of the front wiper motor --> motor --> to GROUND and causes the wiper motor to run at high speed.
3. INT POSITION
With the wiper and washer SW turned to INT position, current flows from TERMINAL 6 of the front wiper control relay --> TERMINAL 3 -->
TERMINAL 12 of the wiper and washer SW --> TERMINAL 16 --> to GROUND. As a result, the wiper relay operates and the current in
TERMINAL 6 of the relay flows to TERMINAL 5 of the relay --> TERMINAL 4 of the wiper and washer SW --> TERMINAL 7 -->
TERMINAL 3 of the front wiper motor --> motor --> to GROUND and the motor operates. Intermittent operation is controlled by discharging a
condenser built into the relay.
The discharge time has been set by timer control SW to vary the intermittent interval.
4. WASHER OPERATION
With the wiper and washer SW turned to WASHER position, the current in TERMINAL 5 of the motor flows to TERMINAL 1 -->
FR-WASHER fuse --> TERMINAL 2 of the washer motor --> TERMINAL 1 --> TERMINAL 8 of the wiper and washer SW -->
TERMINAL 16 --> GROUND, and causes to the washer motor to run. Washer fluid is sprayed when the washer SW is pushed continuously.