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Rear Defrost
Rear Defrost a plurality of horizontal conductors deposited on the inner surface of the rear window. For detection of rupture of a conductor of a heater of back glass include ignition switch and rear window defogger.
| Fig. 18.73. Using the output voltmeter, wrapped with foil for the detection of rupture of a conductor of a heater of back glass
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Connect one lead of the voltmeter to the "weight" of a vehicle, and a second terminal, wrap in foil and move on a heater conductor (Fig. 18.73).
| Fig. 18.74. Application of the voltmeter to detect the broken conductor of a heater of back glass
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Connect a voltmeter to the output in the center of each conductor of a heater of back glass. If the voltmeter shows voltage of about 5 V, then the heater conductor is serviceable. If the voltage on the voltmeter 0 or 12 - conductor heater broken (Fig. 18.74).
| Fig. 18.75. Application of the voltmeter to detect the break conductor rear window defogger
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To detect the break conductor of a heater connect one lead of the voltmeter to the positive terminal of the heater, and the second - move on a heater conductor from the negative terminal of the heater. The point at which the voltage shown by the voltmeter, will fall to zero, is a place of rupture of a conductor of a heater (Fig. 18.75).
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