Vehicles are equipped with a lever switch with a ring to adjust the wiper frequency in automatic mode or an automatic change of the wiper frequency in intermittent mode.
Automatic operation
In both cases, vehicles are equipped with:
- – Sensor sensitivity control on the windshield wiper stalk;
- – Automatic change of the wiper frequency in intermittent mode and a light sensor.
To activate the system, set the windshield wiper stalk to the intermittent mode position.
When turning off the ignition, set the windshield wiper stalk to the "stop" position, then back to the "intermittent" position.
Fig. Flow chart of windshield wiper and washers: 1 - remote control under the steering wheel; 2 - rain and light sensor; 3 - driver control; 4 - diode block and switch; 5 - UCH; 6 - wired communication; 7 - multiplex communication channel; 8 - information on reverse gear and vehicle speed; 9 - protection and switching unit; 10 - windshield and rear window washer pump; 11 - rear window wiper motor; 12 - Windshield wiper motor
Operating Features
If there is increased resistance to the wiper arms (e.g., when driving at high speed), the protection and switching unit automatically switches the wiper to a lower speed mode.
If the wiper mechanism is jammed (e.g., if the blades freeze to the windshield), the protection and switching unit automatically cuts power to the motor only when the vehicle is stationary.
If the windshield wiper is activated by the switch or rain sensor, the rear window wiper is activated when reverse gear is engaged.
Commands from the wiper switch have the highest priority and override commands from the UCH and the protection and switching unit.
The frequency of the rear window wiper blades depends on the vehicle speed.
If the UCH If the steering column switch does not receive a control signal, the windshield wiper automatically switches to low speed.
The UCHCS has special configurations to provide windshield wiping and washing functions.