DAF 95XF Дворники - омыватель

39. WIPE-WASH SYSTEM

WINDSCREEN WIPERS

If the vehicle is switched to contact (G015

activated), a supply voltage will be applied to

connection pin 4/411 of switch C776 through

fuse E025.

The driver now has three choices, i.e. interval,

speed I and speed II.

Speed I:

If switch C776 is set to position I, a voltage is

applied to pin 21 of the CTE-2 unit through fuse

E025 and contacts 1 and 2 of switch C776

(through wire 4500). Using a transistor switch,

the CTE-2 unit then internally connects pin 23 to

earth, activating relay G237. A supply voltage is

now applied to pin 5 of the windscreen-wiper

motor (B000) through relays G236 and G237.

This voltage runs through fuse E025, relay

G237 (contacts 5 and 3), wire 4506, relay 236

(contacts 3 and 4) and wire 4507.

Speed II:

If switch C776 is put into position II, a voltage is

applied to pin 46 of the CTE-2 unit through fuse

E025 and contacts 1 and 3 of switch C776

(through wire 4501). Using its transistor switch,

the CTE-2 unit now not only connects pin 23 but

also pin 52 to earth. Both relays G237 and G236

are now activated. A supply voltage is now

applied to pin 6 of the windscreen-wiper motor

(B000) through relays G236 and G237, causing

the windscreen-wiper motor to operate faster.

If the windscreen wiper is halfway through its

stroke and the windscreen-wiper control switch

is set to position 0, the windscreen wiper

finishes its stroke and then stops. This is

possible because the switch in the

windscreen-wiper motor (B000) reverses when

the motor is at an angle in relation to its neutral

position.

If the windscreen-wiper control switch is set to

position 0, switch B000 provides the required

supply voltage to enable the motor to finish its

stroke. If the stroke is finished, switch B000 will

return to its neutral position.

Interval (i):

If switch C776 is set to position i, a voltage is

applied to pin 49 of the CTE-2 unit through fuse

E025 and contacts 1 and 4 of switch C776

(through wire 4502). Using a transistor switch,

the CTE-2 unit then connects pin 23 to earth (for

1 second), activating relay G237 for a short

time. A voltage is now applied to pin 5 through

relay G237 (pins 3 and 5) and relay 236 (pins 3

and 4). The windscreen-wiper motor starts

operating and the “switch” in the

windscreen-wiper motor (B000) is reversed. A

voltage is now applied to wire 4507 through fuse

E025, contacts 3 and 2 in the windscreen-wiper

motor through wire 4509, and contacts 4 and 3

of relays G237 and G236. A voltage is also

applied to pin 40 of the CTE-2 unit, enabling this

unit to measure whether or not the stroke has

been finished. The motor will now stop for some

seconds; after this period the motor will start

again for as long as a voltage is applied to pin

49.

Wipe-wash:

If the spring-back part of switch C776 is used,

connection between 1 and 5, a voltage is

applied to pin 20 of the CTE-2 unit through fuse

E025 and contacts 1 and 5 of switch C776

(through wire 4503). A voltage is applied directly

to the windscreen-wiper pump motor (B001)

through wire 4503.

After a brief period of spraying, pin 23 of the

CTE-2 unit is connected to earth using a

transistor switch. As a result, relay G237 is

activated.

A supply voltage is now applied to pin 5 of the

windscreen-wiper motor (B000) through relays

G236 and G237. The windscreen-wiper motor

B000 will now start operating. The CTE-2 unit

will have the motor make 3 revolutions and will

then disconnect pin 23 from earth, causing the

windscreen-wiper motor (B000) to stop.

Cut-off switch:

If the windscreen-wiper motor (B000) does not

operate, pin 40 of the CTE-2 unit “detects” an

earth connection over the windscreen-wiper

motor “switch”, wire 4509.

If switch C776 is engaged so that the

windscreen-wiper motor should operate (voltage

to pins 21, 46 or 49), the earth to pin 40 should

be changed into +24V through the “switch” in

the motor. If the voltage is not changed (the

motor is not operating), the CTE-2 unit will

disconnect the earth from pins 23 and/or 52,

preventing the motor from burning, for example

as a result of frozen windscreen-wiper blades.

The CTE-2 unit is “reset” by switching C776 into

the “off” position.

Headlight cleaner

If lighting switch C622 is activated (position I or

II), a voltage is applied to the rear-light/side-light

relay (G000).

If this relay is activated, a connection is made

between contacts 30 and 87. The voltage will

now activate relay G238 (headlight cleaner)

through fuse E117, wire 2630 and print track. A

connection is made with contacts 3 and 5, so

that the voltage is applied to B002 through fuse

E025, relay G238 and wire 4511. If a voltage is

applied to connection pin 20 for at least 1

second (engaging the windscreen-wiper pump

B001), relay G238 is connected to earth for

approx. 1 second, causing the headlight-cleaner

pump motor (B002) to be activated for approx. 1

second.

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