Rear Window Defogger; Rear Window Defogger Printed Heater Inspection; Repair Of Broken Heater Line - Hyundai trajet Shop Manual

REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER PRINTED
HEATER
INSPECTION
ETA91650
CAUTION
Wrap tin foil around the end of the voltmeter test lead
to prevent damaging the heater line. Apply finger
pressure on the tin foil, moving the tin foil along the
grid line to check for open circuits.
Finger pressure
Tin foil
Printed
heater line
ETA9165A
1. Turn on the defogger switch and use a voltmeter
to measure the voltage of each heater line at the
glass center point. If a voltage of approximately 6V
is indicated by the voltmeter, the heater line of the
rear window is considered satisfactory.
ETA9165B
2. If a heater line is burned out between the center
point and (+) terminal, the voltmeter indicates 12
volts.
ETA9165C
BE -49
3. If a heater line is burned out between the center
point and (-) terminal, the voltmeter indicates 0 volts.
ETA9165D
4. To check for open circuits, slowly move the test lead
in the direction that the open circuit seems to exist.
Try to find a point where a voltage is generated or
changes to
av.
The point where the voltage has
changed is the open-circuited point.
Voltage changes before and
after open circuited point
Here is a voltage OV Terminal
x
...---------1 (_)
e
ETA9165E
5. Use an ohmmeter to measure the resistance of each
heater line between a terminal and the center of a
grid line and between the same terminal and the
center of one adjacent heater line after another.
The section involving a broken heater line indicates
resistance twice as that in other section. In the
affected section, move the test lead to a position
where resistance sharply changes.
When measured from negative
terminal side (Section
with no broken grid line)
l(
- ~ - - - - - l ! l
Positive
teminal
Tester B
reads resistance is
tvvice as large as tester terminal
ETA9165F
REPAIR OF BROKEN HEATER LINE
Prepare the following items:
1. Conductive paint.