On ZIL cars and buses produced before 09/01/01, an electric motor 351.5205 and a washer mod. 11.5208 with electronic control unit mod. BUS 1.92.3761, located in the cabin under the instrument panel on the left side of the driver next to the hood release handle.

Fig. 1. Wiper connection diagram.

The unit is equipped with a push-button switch with a fixed position to disable the automatic control mode without interfering with the operation of the windshield wiper and washer.

The transition of the unit to the automated control mode is signaled by an LED indicator located on its body.

There is a handle 6 on the block, turning it clockwise increases and counterclockwise decreases the pause in the movement of the windshield wiper.

Fig.2. Windshield wiper wiring diagram

When the windshield washer motor is turned on, the unit doses the supply of washer fluid as the brushes move upward.

The windshield wiper and washer are controlled using a combination switch.

Enabling the intermittent mode and changing the duration of pauses in the wiper operation is done using the right handle of the switch.

The length of pauses that can be set are 5, 10, 15 and 20 seconds.

Fig. 3. Wiper switch positions

To turn on the intermittent mode, the handle must be moved to position “III”. In this case, the minimum pause duration is automatically set to 5 seconds.

It should be borne in mind that after each movement of the handle to position “III”, the brushes immediately perform one cleaning cycle, and then after a pause.

In order to increase the duration of the pause, during the pause it is necessary to briefly, for no more than 2 s, move the handle to the “0” position, and this can be done several times in a row to obtain the required pause value.

To reset the set pause, you need to move the handle to the “0” position for more than 2 s.

Switching the handle from positions “0” or “III” should be done when the brushes are completely stopped in their original position.

If the handle is moved from position “0” or “III” to a non-fixed position, after releasing it, the brushes will make four strokes and return to their original position.

On vehicles produced after 09/01/01, the PRP2.MS-92.3762 electronic unit for controlling the operation of the windshield wiper can be installed. This unit is installed on all buses.

In this case, turning on the intermittent mode and changing the duration of pauses in the wiper operation is done only with the right handle of the combination switch on the steering column.

The duration of pauses, which the driver can set at will, range from 3 to 18 seconds.

To turn on the intermittent mode, the handle must be moved to position “III”. In this case, the maximum pause duration is automatically set - 18 s.

It should be borne in mind that after each movement of the handle to position “III”, the brushes immediately perform one cleaning cycle, and then after a pause.

Obtaining a pause of any duration in the range from 3 to 18 s is done as follows:

  • 1. Move the lever to position “III” (the brushes immediately perform one cleaning cycle).
  • 2. As the glass becomes dirty, it is necessary to move the lever to position (for a period of no more than 2 s) and immediately return it to position “III” (the brushes will immediately perform one cleaning cycle), and the control unit will remember the pause time between these two switching on of the brushes and beyond will play it automatically.
  • 3. to further reduce the pause, you need to repeat operation 2.
  • 4. The duration of pauses is increased after canceling the specified pause mode.

To cancel the specified pause mode, you need to move the handle to one of the positions “0”, “I” or “II” for a time of more than 2 s, and then set the desired pause by performing the operations according to paragraphs. 1, 2.

Switching the handle from positions 0 or III should only be done when the brushes have completely stopped in their original position.

When mode “I” is turned on, the windshield wiper operates without a pause at low cleaning speed, in mode II - at high speed.

With short-term (less than 2 s) inclusion in a non-fixed position When “IV” is pressed, in any current position of the lever, the windshield wiper is turned on for five cycles of brush passage.

In the first two cycles, the windshield is automatically watered with two doses of liquid.

When the lever is held in the non-fixed position “IV” for a long time (more than 2 s), dosed watering on the glass occurs automatically with each upward movement of the brushes.