a) Remove the center panel.
b) Disconnect the "5P" connector (A) and remove the switch (B).
c) Check the continuity between the terminals in each switch position as shown in the table.
2. Checking the rear window defroster wires.
a) Wrap the negative terminal of the tester with foil as shown in the figure.
b) Turn on the ignition and the heater being tested.
c) Check the voltage on the side bus of the thermocouple.
If there is no battery voltage, the wires are damaged, the ground (G402, G602) is faulty, or the heater switch is faulty.
If there is battery voltage, perform the next check step.
c) Measure the voltage at the center of each thermocouple wire.
- If the voltage is about 6V, but the wire is normal.
- If the voltage deviates from the specified value, repair.
If the measured voltage is the battery voltage, then there is a break in the wire between the middle and the side bus (-) of the thermoelement.
If the measured voltage differs from the battery voltage, there is a break in the wire between the middle and the side bus (+) of the thermoelement.
3. Repair of wires.
a) Clean the ends of the wire at the break point with solvent and stick protective tape on both sides of the wire.
b) Mix the repair compound thoroughly and apply a drop of the substance to the wire using a fine-tipped brush.
c) After 2-3 minutes, remove the protective tape and leave to harden for 12 hours at a temperature of 25°C.
Note: Do not turn on the heater until the repair compound has completely hardened.
d) Check the conductivity at the place where the repair was carried out.
(The original text of the article is located on the website: Hondabook.ru)