INSPECTION
Evaporator
Check
evaporator
for
leakage
or
damage
If
damaged
replace
Expansion
valve
Check
expansion
valve
for
leakage
or
clogging
If
clogged
clean
filter
in
expansion
valve
If
damaged
replace
RECEIVER
DRYER
AND
PIPING
REMOVAL
AND
INSTAUATION
Receiver
dryer
I
Disconnect
battery
ground
cable
2
Discharge
system
Refer
to
Dis
charging
System
under
General
Service
section
3
Disconnect
compressor
lead
wire
at
connector
4
Disconnect
cooling
pipes
at
joints
Acno
Fig
AC
39
Diaconnecting
coo
ing
pipes
Notes
a
Plug
all
piping
joints
immediately
after
pipe
disconnection
to
prevent
entry
of
dust
or
moisture
laden
air
into
receiver
dryer
or
air
aJOdi
tioning
system
b
Use
two
wrenches
when
dIsconnect
ing
cooling
pipes
5
Remove
four
screws
securing
receiver
dryer
bracket
to
vehicle
body
and
detach
compressor
relay
and
pres
sure
switch
as
an
assembly
6
To
install
receiver
dryer
and
piping
reverse
the
order
of
removal
Air
Conditioning
Notes
a
Apply
a
coat
of
fresh
compressor
oil
to
sealing
surfaces
when
con
necting
cooling
pipes
b
Use
two
wrenches
when
connecting
cooling
pipes
c
Evacuate
cooling
system
then
re
charge
with
refrigerant
Refer
to
Evacuating
and
Checking
System
under
General
Service
sec
tion
d
Check
refrigerant
leakage
if
neces
sary
repair
Refer
to
Evacuating
and
Charging
System
under
General
Service
See
tion
Condenser
Disconnect
battery
ground
cable
2
Discharge
system
Refer
to
Dis
charging
System
under
General
Service
section
3
Drain
engine
coolant
4
Remove
radiator
grille
5
Remove
radiator
shroud
and
radiator
On
automatic
transmission
models
disconnect
both
torque
converter
oil
hoses
Note
While
cooling
water
is
hot
take
precautions
against
scalding
6
Disconnect
two
pipes
from
con
denser
remove
two
screws
securing
condenser
Condenser
can
now
be
removed
AC485
Fig
AC
40
Removing
conden
er
Notes
a
Use
two
wrenches
when
disconnect
ing
pipe
joints
b
Plug
openings
immediately
after
disconnecting
pipes
7
To
install
reverse
the
order
of
removal
AC
29
Tightening
torque
Flare
nut
for
copper
tube
from
compressor
2
5
to
4
0
kg
m
i8
to
29
ft
Ib
Flare
nut
for
copper
tube
to
receiver
dryer
2
5
to
3
5
kg
m
i8
to
25
ft
lb
Notes
a
When
disconnecting
and
connecting
cooler
pipes
be
sure
to
use
two
wrenches
b
Apply
a
coat
of
fresh
compressor
oil
to
sealing
surfaces
when
con
necting
cooler
pipes
c
To
prevent
possibility
of
explosion
due
to
high
pressure
within
cooling
system
do
not
clean
condenser
with
steam
Always
use
cold
water
or
cold
compressed
air
d
Evacuate
cooling
system
then
re
charge
with
refrigerant
Refer
to
Evacuating
and
Charging
System
under
General
Service
sec
tion
e
Check
refrigerant
leakage
if
neces
sary
repair
Refer
to
Checking
for
Leaks
under
General
Service
sec
tion
INSPECTION
RecelYer
dryer
Check
for
refrigerant
leakage
or
damage
Check
for
proper
connection
of
two
lead
wires
running
to
pressure
switch
If
any
component
part
is
found
damaged
replace
receiver
dryer
and
pressure
switch
as
an
assembly
Condenser
I
Check
inlet
and
outlet
pipe
joints
and
sealing
surfaces
for
damage
Re
place
parts
if
damaged
or
leaky
2
Clogged
condenser
fins
or
air
pas
sages
may
reduce
cooling
efficiency
of
condenser
Clean
these
areas
with
dry
compressed
air
Piping
Check
piping
for
leakage
If
leakage
occurs
at
connections
retighten
connecting
nuts
Replace
if
leakage
persists
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
