323001204 - 5050 SCREEN WASHERS AND HEADLAMP WASH/WIPE

SPECIFICATIONS

The vehicle is equipped with a system that cleans and washes the front windscreen.

Reservoir

The reservoir is located in the left side of the wheel arch compartment. It supplies the screen washer system with the water-antifreeze mixture required to clean the windscreen.The 3 litre capacity of the reservoir guarantees a minimum of 25 washing cycles.The reservoir is made from plastic and has an outer seat for housing the screen washer pump.

1 - Windscreen washer fluid reservoir2 - Pump supplying fluid to the nozzles

Controls

Moving the lever downwards activates the operation of the windscreen wiper.Turning the ring nut alters the speed of the windscreen wipers and the washing mode (continuous or intermittent)When the lever is moved to the unstable position (A) the operation is limited to the time the lever is kept in this position. The lever returns to its original position when it is released automatically stopping the windscreen wipers.

Operation

Windscreen wiper

Manual mode operationWhen the ring nut for the steering column switch unit right lever is moved, to one of the three positions:- intermittent- first speed continuous- second speed continuousthe windscreen wiper motor is activated according to the following logic.Intermittent: the windscreen wiper is operated at the first speed but with a pause between one stroke and the next, that varies according to the speed of the vehicle (from a minimum of 1.1 secs. above 110 km/h to a maximum of 4.7 secs with the vehicle stationary).First speed continuous: the windscreen wiper is operated at the first speed at 45 strokes/minute.Second speed continuous: the windscreen wiper is operated at the second speed at 65 strokes/minute.Smart washing functionBy pulling the lever towards the steering wheel (unstable position) the screen washer jet is activated.By keeping the lever pulled for more than half a second it is possible to automatic activate the screen washer jet and the actual windscreen wiper in a single movement.The operation of the windscreen wiper ends three strokes after the lever is released.The washing cycle is completed by a stroke of the windscreen wipers six seconds later.Automatic mode operationA special rain sensor manages the automatic operation: it is a sensor with an infrared LED installed in the windscreen (integrated with the interior rear view mirror) capable of detecting the presence of rain and, consequently, of managing the wiping depending on the water present on the glass.The rain sensor is activated by placing the ring nut for the right steering column switch unit lever in the intermittent-automatic position. The frequency of the windscreen wiper strokes is automatically adjusted depending on the amount of water on the windscreen. This frequency can vary from no stroke (no rain - windscreen dry) up to the second continuous speed (heavy rain - windscreen wet).The activation of the rain sensor involves a windscreen wiper arm stroke as feedback to confirm that it has been switched on.

The user can alter the sensitivity of the rain sensor, using the vehicle set up menu in the instrument panel.

If the vehicle is switched off leaving the ring nut in the intermittent-automatic position, the next time it is switched back on there is no wiping cycle even if there is rain; this prevents accidental activation which could cause dangerous conditions for the user (for example, washing the windscreen by hand, blades stuck frozen , etc.).

To restore the automatic operation of the system, move the ring nut from the intermittent-automatic position to any other position and then return it to the intermittent-automatic position.If there is a problem with the rain sensor (sensor faulty), the following strategies are activated:- if the problem is present at the activation (operation of the ring nut), the windscreen wiper immediately works in intermittent operation, irrespective of whether or not there is rain on the glass- if it occurs during operation (with the rain sensor activated): the windscreen wiper is operated in accordance with the last command sent by the rain sensor until another mode is selected or the operation of the windscreen wiper is deactivated.In any of these cases the instrument panel signals the failure of the sensor; this makes it possible to highlight the incorrect operation of the sensor.

The diagram below illustrates the display available for versions with a reconfigurable multifunction display (MATRIX) only. (lyyteh The dedicated warning light on other versions is the general failure warning light.

The fault reading remains activated until the fault disappears.For further details, See descriptions 5560 INSTRUMENTS CompositionThe device consists of a sensitive element (1) containing infra red transmission elements and a reception element.A containment structure (2) and a cover (3) that protects the sensitive element.A contact disc (4) spready with silicone material (SilGel612) to bond it to the glass.

1 - Sensitive element2 - Retaining structure3 - Cover4 - Contact disc

The layer of silicone material is protected by a film that is removed when the component is installed. Avoid touching with your hands to prevent damage to the silicone. Because it is not possile to disconnect and reconnect the part without damaging the silicone layer, the sensor should be replaced if the windscreen is replaced.

If a new part is installed during service, check that no air bubbles remain between the glass and sensor, apply a load of at least 50N to ensure any bubbles emerge.

Windscreen washer

Front windscreen washingPulling the right steering column switch unit lever activates the front washing.Keeping the lever pulled for more than 0.5 secs automatically activates the windscreen wiper at the first continuous speed.When the control is released there are a further 3 strokes to clean the windscreen plus another one 6 seconds later (to remove any drips).If the windscreen wiper was already activated before the washing command using the lever, the washing logic is only effective for activating intermittent operation.

WINDSCREEN WIPER CONTROL UNIT

The operating logic for the windscreen wash/wipe function is managed by the Body Computer Node and by the windscreen wiper relay control unit.

PIN OUT

Pin	Description
1	INT/A supply for rearscreen wiper motor (preparation)
2	Rearscreen wiper relay coil negative control from NBC (preparation)
3	Windscreen wiper relay coil negative control from NBC (1^st speed)
4	Windscreen wiper relay coil negative control from NBC (2^nd speed)
5	N.C.
6	Windscreen - rearscreen washer pump relay coil negative control (preparation)
7	Windscreen - rearscreen washer pump relay coil negative control (window)
8	Windscreen - rearscreen washer pump power supply (window)
9	Power earth
10	INT/A supply for rearscreen wiper motor and rearscreen wiper relay coil (preparation)
11	+30 power supply for windscreen wiper power
12	Windscreen wiper motor power supply (2^nd speed)
13	Windscreen wiper motor power supply (1^st speed)
14	INT/A power supply for windscreen wiper, windscreen/rearscreen washer and power windscreen/rearscreen washer relay coils
15	Windscreen - rearscreen washer pump power supply (rearscreen) (preparation)