Contents: Windscreen wiper ⇓ Windshield washer ⇓ Pause function between wiper strokes ⇓ Windscreen wiper operation ⇓
Windscreen wiper
The windshield wiper system consists of a gear motor, a lever mechanism, windshield wiper arms with brushes and a switch. The windshield wiper mechanism, equipped with a self-stopping device, consists of a worm gear and a plate with a cam for temporarily maintaining the chain in the on state until the end of the windshield wiper working stroke with the switch in the off position. The windshield wipers are driven by an electric motor with a permanent magnet. The gear motor is installed on the dashboard shield and is connected to the windshield wiper lever mechanism. The windshield wipers have two speeds (LOW and HIGH) and an intermittent mode. The wiper switch is an integral part of the wiper and washer switch. The windshield wipers are controlled by a lever on the right side of the steering column.
Fig. 7.54. Windscreen wiper operation diagram: 1 – IG1; 2 – Windscreen wiper and washer switch; 3 – impulse switch; 4 – off; 5 – INT – intermittent mode; 6 - first; 7 - second; 8 – Windscreen wiper switch; 9 – intermittent mode relay; 10 – Washer switch; automatic stop switch; 12 – Windscreen wiper motor; 13 – Windshield washer motor; 14 – pause duration when working in intermittent mode; 15 – ABS/TCS HU/CM or DSC HU/CM; 16 – Windscreen wiper and washer switch, right side
Fig. 7.55. Windscreen wipers and washers of the Mazda 6 car: 1 – Windscreen wiper and brush; 2 – windshield wiper motor; 3 – windshield washer nozzle; 4 – windshield washer reservoir; 5 – Windshield washer motor; 6 – rear window washer motor; 7 – washer fluid level sensor; 8 – windshield washer hose; 9 – rear window washer hose; 10 – Windscreen wiper and washer switch; 11 – headlight washer motor; 12 – headlight washer nozzle; 13 – headlight cleaner hose; 14 – Headlight washer switch; 15 – rear window wiper and brush; 16 – Rear window wiper motor; 17 – rear window washer nozzle; 18 – Rear window wiper intermittent mode relay
Windshield washer
The windshield washer system consists of a reservoir, pump, hoses, spray nozzles and a wiper and washer switch.
The windshield washer reservoir is mounted inside the front right fender. The washer pump attached to the reservoir supplies fluid through pipes to two jets mounted on the hood of the car. The washer switch is an integral part of the wiper and washer switch. The windshield washers are controlled by a lever on the right side of the steering column.
Pause function between wiper strokes
The windshield wiper control system is speed-sensitive, meaning that the interval between wiper strokes is automatically adjusted based on vehicle speed. This system reduces the need to adjust intermittent wiper settings.
Windscreen wiper operation
When the windshield wiper switch is in the INT position, the intermittent wiper relay is turned on and electric current is supplied to the windshield wiper motor, which starts to operate at low speed.
Depending on the vehicle speed signal from the anti-lock brake system (DSC) HU/CM, the intermittent wiper control relay operates as follows:
- a) when the vehicle speed is 0 km/h:
- maximum pause duration between working strokes 11.6 s;
- minimum pause duration between working strokes 4.2 s;
- b) at a vehicle speed of 30 km/h or more:
- maximum pause duration between working strokes 9.6 s;
- minimum pause duration between working strokes is 1.1 sec.