Component Tests and General Diagnostics

Rearend Door Window / Back Window Defogger Wire Inspection






NOTE:
- When cleaning rear window glass, use a dry cloth to wipe it along heat wire (1) direction.
- When cleaning glass, do not use detergent or abrasive-containing glass cleaner.
- When measuring wire voltage, use a tester with negative probe (2) wrapped with a tin foil (3) which should be held down on wire by finger pressure.

Wire Damage Inspection
1. Turn ignition switch to ON position.
2. Turn on defogger switch.




3. Measure voltage at each position(s) as follows.

For wagon model:




Measure voltage at the center of each defogger wire (1), and check defogger wire condition according to the table.

For sedan model:




Measure voltage at position "a" and position "b" of each defogger wire (1), and check defogger wire condition according to the table.
If defogger wire open is found, go to next step.




4. Touch voltmeter negative (-) lead to defogger wire ground terminal end (1).
5. Touch voltmeter positive (+) lead with a foil strip to defogger wire power source terminal end (2), then move it along wire to defogger wire ground terminal end (1).

For wagon model:
The place where voltmeter fluctuates from 10 - 12 V to 0 - 1 V is where there is open.

For sedan model:
The place where voltmeter fluctuates from 10 - 12 V to 4 - 6 V or 4 - 6 V to 0 - 1 V is where there is open.
If found defective, repair defogger wire.