MAINTENANCE
Replace
any
wiring
harness
which
is
cracked
deteriorated
or
poorly
in
sulated
Always
replace
wire
with
those
of
the
same
diameter
Do
not
use
wire
of
smaller
diameter
Where
necessary
securely
retain
wire
harnesses
with
clips
or
tapes
so
that
they
will
not
be
frayed
or
worn
by
vibration
Notes
a
Repair
or
replace
any
electrical
part
which
is
questionable
or
likely
to
cause
a
short
circuit
When
disconnecting
battery
cables
always
disconnect
ground
cable
be
fore
positive
cable
Clean
battery
and
terminals
before
connecting
cables
then
connect
positive
cable
and
ground
cable
in
that
order
Apply
a
coat
of
grease
to
terminals
to
prevent
rust
formation
b
Do
not
attempt
to
conduct
a
con
tinuity
test
with
a
screwdriver
or
service
tools
always
use
test
lead
wires
c
Do
not
ground
terminals
when
circuits
are
open
or
unloaded
always
use
a
test
lamp
12V
3W
or
circuit
tester
as
a
load
MAIN
RELAY
Removal
and
Installation
The
main
relay
is
attached
to
the
cooling
unit
I
Disconnect
battery
ground
cable
2
Disconnect
main
relay
lead
wires
at
connector
3
Remove
cooling
unit
assembly
Refer
to
Removal
and
Installation
under
Cooling
Unit
4
Remove
the
screw
securing
main
relay
to
cooling
unit
and
detach
main
relay
5
To
install
main
relay
reverse
the
order
of
removal
Inspection
To
check
continuity
in
relay
circuit
use
a
test
lamp
or
an
ohm
meter
Continuity
between
points
3
and
4
should
exist
Air
Conditioning
When
a
12
volt
d
c
is
applied
across
points
3
and
4
continuity
between
points
I
and
2
should
also
exist
CD
00
COMPRESSOR
RELAY
Removal
and
installation
Disconnect
compressor
relay
lead
wires
at
connector
2
Remove
two
screws
securing
com
pressor
relay
to
receiver
dryer
and
detach
compressor
relay
3
To
install
compressor
relay
reo
verse
the
order
of
removal
@
I
ul
CDe
JOO
ID
IDe
@e
L
AC465
Fig
AC
42
Main
relay
Inspection
Using
a
test
lamp
or
an
ohmmeter
make
sure
that
compressor
relay
con
tacts
open
and
close
con
tinuously
Continuity
always
exists
between
points
3
and
4
When
current
flows
through
points
3
and
4
points
1
and
2
close
This
causes
current
to
flow
through
1
and
2
FAN
SWITCH
Removal
and
installation
1
Disconnect
battery
ground
cable
2
Remove
screws
securing
console
box
Withdraw
console
box
forward
and
disconnect
lead
wire
connector
3
Detach
switch
knob
4
From
rear
side
of
console
box
remove
screws
securing
switch
and
remove
switch
5
To
install
fan
switch
reverse
the
order
of
removal
AC
31
i
t
v
J
AC489
Fig
A
C
43
Compressor
relay
AC771
Fif
AC
44
Removing
fan
switch
Inspection
Check
continuiry
in
fan
switch
circuit
with
a
test
lamp
or
an
ohm
meter
I
011
I
2
3
ICD
Tt
tt
AC772
Fig
AC
45
Fan
switch
RESISTOR
FOR
FAN
SWITCH
Removal
and
Installation
I
Disconnect
battery
ground
cable
2
Remove
glove
box
3
Remove
cooling
unit
Refer
to
Removal
and
Installation
under
Cooling
Unit
4
Disconnect
resistor
lead
wires
at
connector
@
O
sn
I
3n
CD
00
@
AC492
Fig
AC
46
Resistor
for
fan
switch
Air
Conditioning
5
Remove
resistor
assembly
from
upper
side
of
cooling
unit
Resistor
is
inserted
into
case
6
To
install
res
istor
for
fan
switch
reverse
the
order
of
removaL
Inspection
Test
continuity
between
resistor
and
fuse
THERMO
SWITCH
Removal
and
installation
1
Disconnect
battery
ground
cable
2
Remove
glove
box
3
Remove
duct
from
cooling
unit
4
Disconnect
thermo
switch
control
cable
and
lead
wires
5
Remove
thermo
switch
Note
Capillary
lube
is
fitted
into
groove
in
cooler
unit
6
To
install
thermo
switch
reverse
the
order
of
removal
I
I
AC773
Fig
AC
47
Removing
thermo
switch
AC
32
Inspection
I
Fully
move
thermo
swirch
lever
to
COLD
2
Test
continuity
between
ter
minals
with
a
test
tamp
or
an
ohm
meter
Continuity
should
exist
3
Dip
capillary
tube
end
into
ice
water
Test
continuity
between
ter
minals
Continuity
should
not
exist
4
Replace
if
switch
is
found
dam
aged
F
I
C
D
SOLENOID
VALVE
Removal
and
installation
I
Disconnect
battery
ground
cable
2
Disconnect
lead
wires
and
vacu
um
tube
3
Remove
two
screws
securing
sole
noid
valve
and
remove
solenoid
valve
AC77
4
Fig
AC
48
Removing
F
l
C
D
solenoid
valve
4
To
install
solenoid
valve
reverse
the
order
of
removal
Inspection
1
Test
continuity
in
solenoid
valve
circuit
with
a
test
lamp
or
an
ohm
meter
2
Turn
both
fan
switch
and
thermo
switch
on
3
Run
engine
at
idle
and
check
to
be
sure
that
vacuum
is
present
in
line
between
solenoid
valve
and
diaphragm
