Windshield wipers
Windshield wipers include the following items:
- Wiper arms (2 pcs.)
- Wiper motor on deflector grille
- Windshield wiper linkage
- Windshield wiper blades (2 pcs.)
- Wiper relay, in central electrical box
- Central timer module (CTM) in CJB
- Multi-function switch including
- Wiper switch
- Washer switch (push switch) And
- Cleaning interval controller (rotary control, depending on the model)
Functions of windshield wipers
The windshield wiper motor has two speeds and a limit switch for the off position. It is controlled by a multi-function switch mounted on the steering column via the windshield wiper relay and the CTM.
After turning on the ignition (position II) The following five wiper modes are available:
- Turned off
- Single cleaning
- Slow cleaning
- Quick cleaning
- Intermittent cleaning
Wiper lever in OFF position (off)
If the windshield wiper switch is moved from any position to the OFF position (off), the wiper motor will run at low speed until the idle position is reached and then stop. This is done by means of a second electrical circuit and a limit switch. Thus, the power supply to the wiper motor continues after switching off until the limit switch interrupts the power supply through the wiper relay (normally closed contact) and multifunction switch.
Wiper lever in ONCE position (single cleaning)
Press the wiper arm down and release it. The lever automatically returns to the OFF position (off). The windshield wipers perform the cleaning cycle at a low speed. Electrical current flows through the multi-function switch to the wiper motor.
Wiper lever in SLOW position (slow cleaning)
Push the wiper lever up two positions. Windshield wipers operate at low speed. Electrical current flows through the multi-function switch to the wiper motor.
Wiper lever in FAST position (fast cleaning)
Push the wiper lever up three positions. Windshield wipers operate at high speed. Electrical current flows through the multi-function switch to the wiper motor.
Wiper lever in INTERMITTENT position (intermittent cleaning)
Move the wiper lever up one position. The windshield wipers perform single wipe cycles at a low speed, with pauses in between. The intermittent wiping period depends on the trim level and is either fixed at 9 seconds or can be selected from six settings by turning the knob at the end of the wiper arm (position 1 = shortest pause, position 6 = longest pause).
The multifunction switch sends a 12V signal to the CTM via a normally closed washer relay contact, which periodically activates the wiper relay, at 9 second intervals or according to the selected intermittent wipe interval (depends on equipment level). After that, the current goes through the wiper relay (normally open contact) and a multi-function switch to the wiper motor.
Windshield washer
WARNING: Windshield washer fluid contains methanol, which is poisonous. Follow the safety regulations.
WARNING: Operate the washer with the headlights on for a maximum of 10 seconds and do not operate the washer when the washer reservoir is empty.
The windshield washer includes the following elements:
- Windshield washer reservoir located under the left front fender
- Windshield washer pump located on the outside of the windshield washer reservoir
- Two adjustable washer jets on the hood.
There are two modes, depending on the operating mode of the wipers:
Wiper lever is in the OFF position (off) or INTERMITTENT (intermittent mode)
The windshield wipers and washer pump operate as long as the wiper lever is «pulls up» to the steering wheel. The washer pump stops immediately when the wiper lever is released. Wipers perform two or three more cycles and continue to operate intermittently (position INTERVAL (interval)) or stop (OFF position (non-working position)).
Wiper lever in SLOW position (slow cleaning) or FAST (fast cleaning)
The washer system works together with the windshield wipers until the wiper lever is «pulls up» to the steering wheel. Current flows from the multifunction switch through the washer pump to the CTM and to the washer switch. The washer switch, when active, provides a connection to «mass».
Heated washer jets (in the presence of)
The injectors are heated continuously after the ignition is switched on (position II).
Rear window wiper
The rear window wiper includes the following items:
- Rear window wiper motor
- Rear window wiper arm
- Wiper
- Wipe interval relay, under right front impact pad
- One nozzle
Rear window cleaner and washer (in the presence of)
To turn on, push the wiper lever towards the instrument panel. The system works as long as the lever is pressed. When the lever is released, the system returns to the idle position. Water for the rear window washer system is taken from the windshield washer reservoir (see ch. «Windshield washer system»), in addition, the same pump is used.
In this case, the windshield washer pump operates with the opposite direction of rotation to that required to wash the windshield.
Current flows from the central electrical box through the washer pump to the washer switch. The washer switch, when active, provides a connection to «mass».
Headlight washer
WARNING: Use the headlight washer for a maximum of 10 seconds at a time and never use with an empty reservoir.
The headlight washer includes the following items:
- Headlight washer pump, on the outside of the washer reservoir
- Headlight washer relay, left under instrument panel
- nozzles (2 pcs.)
The headlight washer works when the windshield washer is on and the headlights are on (near or far light). Electrical control is via the headlight washer relay. The system works when it receives power from the light switch and the windshield washer switch at the same time.
Washer fluid low warning light (in the presence of)
Consists of the following elements:
- Windshield washer fluid low level indicator lamp (on the dashboard)
- Switch in the windshield washer reservoir
- Auxiliary Warning System Module (in the center of the instrument panel)
The control lamp shows that the windshield washer reservoir is only a quarter full. The float switch of the windshield washer system works as a sensor. When there is enough washer fluid, the switch connects «mass» with digital input of the auxiliary warning system module. The electrical circuit is broken if the liquid level drops to a quarter of the volume of the tank.
Procedure to follow if a fault occurs in which the windshield washer fluid leaks from a full windshield washer reservoir when the vehicle is accelerated or braked hard.
Vehicles manufactured up to 09.12.98 (production code WG) inclusive
If the opening in the reservoir vent tube is too large, in the event of sudden acceleration or braking of the vehicle, the windshield washer fluid may leak from the fully filled reservoir. If such a malfunction occurs, it can be eliminated by installing an additional cover on the rear ventilation tube of the tank. For more information, please refer to chapter 32 622 0 found in this section.
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