18:31. Heater of back glass

Defrosting of back glass is carried out by a heater which represents a number of the parallel conductors which are raised dust on glass. At a transmission of electric current conductors heat up and defreeze and clean off back glass from moisture. Current moves from the relay located in the block of safety locks of a motor compartment. If glass on was purified in 15 minutes, it is necessary to include repeatedly a heater on the second cycle, i.e. for 15 minutes.

Check

For check of a heater of back glass wrap up the voltmeter probe an aluminum or tin foil to prevent damage of a conducting strip of a heater. For definition of break it is necessary to press a finger a foil and to move it along a conducting strip.


 PERFORMANCE ORDER

  1. Start the engine and include a heater of back glass. Connect the negative probe of the voltmeter to "mass" of the car. In turn connect the voltmeter probe to the center of each conducting strip of a heater of back glass. The voltmeter has to show tension about 6 Century.
  1. If the voltmeter shows voltage of 12 V, so the conducting strip of a heater has break from outside between a point of connection of the voltmeter and the party of the heater connected to "weight".
  1. If the voltmeter shows voltage below than 0 V, so the conducting strip of a heater has break from outside between a point of connection of the voltmeter and the party of the heater connected to the positive plug of the rechargeable battery.
  1. For definition of a point of a gap move the probe on a conducting strip of a heater to the relevant party. A point where tension shown by the voltmeter sharply changed and is the place of a gap.
  1. Measure by an ohmmeter resistance of each conducting strip between the side plug of a heater and the center of each strip. The strip section having a gap will have resistance twice higher, than resistance of other strips of a heater.

Repair of a conducting strip of a heater

 PERFORMANCE ORDER

  1. For repair of a conducting strip of a heater prepare the following materials and tools:
    – conducting weight;
    – fine conducting weight;
    – adhesive tape;
    – solvent;
    – brush.
  1. Wipe with solvent area of glass about a rupture of a conducting strip of a heater and paste strips of an adhesive tape from two parties of a conducting strip.
  1. Put three layers of conducting weight at an interval of 15 min. Remove an adhesive tape and wait, conducting weight will not dry yet. In 24 hours remove with a sharp knife surplus of conducting weight.

After restoration of a conducting strip of a heater you carry out purification of glass along a strip of a heater by a little humidified rags.