BODY
b
Method
2
Start
the
engine
and
turn
on
the
window
defogger
system
With
a
d
c
voltmeter
setup
shown
in
Figure
BF
70
check
each
heat
wire
for
discontinuity
If
the
meter
indicates
12
volts
or
0
on
a
specific
wire
that
line
is
broken
Normal
indication
6
volts
A
break
in
that
line
can
then
be
detected
by
moving
the
positive
lead
of
meter
along
the
line
until
an
abrupt
variation
in
the
meter
indication
is
encountered
Fig
BF
70
Checking
for
broken
heat
wire
with
d
c
voltmeter
c
Method
3
With
an
ohmmeter
setup
shown
in
Figure
BF
7l
locate
one
lead
on
each
end
of
a
heat
wire
and
the
other
in
the
rniddle
section
of
that
wire
If
the
meter
registers
on
a
specific
grid
line
a
value
twice
as
much
on
any
other
line
that
line
is
broken
A
break
in
that
line
can
then
be
located
by
an
abrupt
variation
in
the
meter
indication
as
the
test
lead
moves
along
the
broken
heat
wire
r
I
I
I
J
I
I
v
Ejl
Fig
BF
71
Checking
for
broken
heat
wire
with
ohmmeter
2
Repair
a
Repair
equipment
1
Conductive
silver
composition
Dupont
No
4817
2
Ruler
30
em
11
81
in
long
3
Drawing
pen
4
Heat
gun
5
Alcohol
6
Cloth
b
Repair
procedure
1
Wipe
clean
broken
heat
wire
and
its
surrounding
area
with
a
cloth
dampened
in
alcohol
2
Apply
a
small
amount
of
conductive
silver
composi
tion
to
the
tip
of
drawing
pen
Note
Shake
silver
composition
container
sufficiently
before
use
3
Place
ruler
on
glass
along
broken
line
to
be
repaired
as
shown
in
Figure
BF
72
Deposite
conductive
silver
composition
to
break
line
with
drawing
pen
Slightly
overlap
existing
heat
wire
either
side
5
mm
0
1969
in
preferable
of
the
break
Heat
wire
0
en
0
0
d
ci
1
I
Break
I
1
I
kr
I
I
Ruler
Drawing
pen
Unit
mm
in
Fig
BF
72
Locating
ruler
in
position
8F
35
