Cylinder head BMW M3 1993 E36 Owners Manual

6
.
Disconnect
ABS
electrical
connectors
.
Label
and
then

disconnect
brake
lines
from
hydraulic
brake
unit
.
Plug

openíngs
.
See
Fig
.
12
.

~
~
A
1/
B
'1v
C
~
F

lu
11
-ri
J
.

0013244
A
.
Right
front



F



Front
from
master
cylinder
B
.
Leftfront



R
.
Rear
from
master
cylinder
C
.
Rear

Fig
.
12
.
Brake
fluid
linesat
ABS
hydraulic
unit
.

WARNING
-

"
On
cars
with
All
Season
Traction
(AST),
special
BMW
service
equipment
is
required
to
properly
bleed
the
Antilock
Brake
System
(ABS)
.
Removal
of
the
ABS
hydraulic
unit
is
not
recommended
un-
less
this
equipment
is
available
.
For
safetyrea-
sons,
the
brake
system
on
cars
with
ABS
must

not
be
bled
using
the
procedures
described
inthis
repair
group
.

"
Do
not
mix
up
the
fluid
fines
at
the
ABS
hydraulic
unit
Label
all
connections
before
disconnecting
.

7
.
Remove
ABS
hydraulic
unit
from
engine
compartment
.

8
.
Working
inside
car,
remove
panel(s)
frombeneath

steering
column
to
access
pedal
assembly
.
See513
In-

terior
Trim
.

12
.
Make
sure
al¡
nuts,
fluid
couplings,
thread
bores
and

mating
surfaces
are
clean
.

BRAKES
340-
9

0011261

Fig
.
13
.
Brake
pedal
clevispin
and
retaining
clip
(A)
.
Brake
booster
mounting
nuts
shown
at
arrows
.

13
.
If
necessary,
mount
master
cylinder
to
vacuum
booster

using
a
new
O-ríng
and
newself-locking
nuts
.

CAUTION-

Do
not
over-torque
the
master
cylinder
mounting
bolts
.
This
could
damage
the
brake
booster
and
prevent
proper
vacuum
build-up
.

14
.
Installation
is
reverse
of
Rmoval
.

"
Bleed
brakes
as
described
earlier
.

"
Check
and,
if
necessary,
adjust
brake
light
switch

above
brake
pedal
.

Tightening
Torques

"
Brakemaster
cylinder
to

brake
booster
...........
.
..
..
...
26
Nm
(18
ft-Ib)

"
Brake
booster
to
bulkhead
.
.
..
..
...
22
Nm
(16
ft-Ib)

"
Brake
fluidline
to
master
cylinder
or

ABS
hydraulic
unit
.......
.
..
17-19
Nm
(13-14
ft-lb)
9
.
Remove
clip
and
clevis
pin
from
brake
booster
pushrod

and
disconnect
it
from
brakepedal
.
Remove
brake

booster
mounting
nuts
.
See
Fig
.
13
.
NOTE-

10
.
Working
in
engine
compartment,
remove
brake
booster



When
replacing
the
brake
booster
one-way
valve
or
together
with
master
cylinder
.



vacuum
hose,
install
the
valve
so
that
the
molded
arrow

is
pointing
toward
the
intake
manifold
.
Use
new
hose

11
.
If
booster
or
master
cylinder
O-ring
is
being
replaced,



clamps
.

disconnect
master
cylinder
from
brake
booster
.

BRAKE
BOOSTER

610-6



ELECTRICAL
COMPONENT
LOCATIONS

Fig
.
15
.
M44
engine
harness
connectors
atair
intake

0011644
Fig
.
16
.
A/
C
recharging
ports
(arrows),
right
rear
of
engine
compart-ment

COMPONENT
LOCATIONS

0012427

811004

Fig
.
17
.
Six-cylinder
ignition
coil
in
top
of
cylinder
head
(M52
engine)
.

Fig
.
18
.
Cooling
fan
dualswitch
in
radiator
(arrow)
.

0013203

Table
a
.
E36
Component
Locations

Component



Model
Year



Location



Refer
to

Anti-theft
Control
Module



1992-1998



Behind
glove
compartment



Fig
.
8
.
Fig
.
9
.

Anti-theft
Horn



1
1992-1998



1
Right
rear
engine
compartment

Anti-slip
(Traction)
Control
Module



1994-1998



Power
distribution
box



Fig
.
8
.
(AST/ASC+T)



Fig
.
9
.

Anti-slip
(Traction)
Control
Switch



1994-1998



In
center
console

Automatic
Climate
(A/C)
Control



1992-1998



Behind
center
console
Module

AutomaticTransmission
Range



1992-1998



~
Next
to
gear
shift
lever
in
center
console



Fig
.
29
.
Switch
(Gear
Position/Neutral
Safety
Switch)

Auxiliary
Cooling
Fan
Dual
Switch



1992-1998



Right
side
radiator



1



Fig
.
18
.

Auxiliary
Cooling
Fan
Motor



1992-1998



Behind
front
grill

Auxiliary
Fuse
Box
(Left
Splice



1992-1998



I
Behind
left
front
footwell
kick-panel
Panel)

Auxiliary
RelayPanel



1
1992-1998



1
Left
side
of
dash
under
steering
column

Auxiliary
Fuse
Box
In
Trunk



1



1997-1998



1
Right
sideof
trunk
behind
trim
panel

AuADSry
ThrottlePosition
Motor



11994-1998



Front
of
engine
compartment

B+
Jump
Start
Junction
Point



1992-1998



Right
rear
of
engine
compartment



Fig
.
7
.

Back-Up
Light
Switch
(Manual)



1992-1998



Right
or
left
side
top
of
transmission



Fig
.
30
.

Body
Electronics
Control
Module



1994-1998



Behindglove
compartment



Fig
.
8
.
(ZKE
IV)



Fig
.
9
.

Brake
Fluid
Level
Sensor



1992-1998



Top
of
brake
fluid
reservoir
at
master
cylinder



Fig
.
15
.

Brake
Light
Switch



1
1992-1998



1
On
brake
pedal
supportbracket

Brake
Pad
Sensor,
Left
Front



1
1992-1998



1
Left
front
brake
caliper

Brake
Pad
Sensor,
Right
Rear



1992-1998



Right
rear
brake
caliper

Camshaft
Actuator
(VANOS)



1993-1998



Front
of
cylinder
head
Camshaft
Position
Sensor
(Cylinder



1992-1998



Front
of
engine
Identification)

Carbon
Canister
Valve
(TLEV)



1
1997-1998



1
In
sparewheel
well
in
trunk

ELECTRICAL
COMPONENT
LOCATIONS



610-11

Fig
.
5
.

Fig
.
4
.

Fig
.
24
.

Fig
.
7
.

Central
Locking
Module
(ZVM)



11992-1993



1
Behindglove
compartment



I



Fig
.
8
.
Fig
.
9
.

Check
Control
Module
(if
applicable)
1
1992
-
1998



1
Below
left
side
of
dash

Child
Protection
Window
Control



1992-1998



Center
console
(console)

Chime
Module



1992-1998



Below
left
side
of
dash
inleft
dash
trim
panel

Clock
(Multi-Function)



1993-1998



Center
console

Clutch
Pedal
Switch



1992-1998



On
clutch
pedal
support
bracket

Continued

COMPONENT
LOCATIONS

610-12



ELECTRICAL
COMPONENT
LOCATIONS

Table
a
.
E36
Component
Locations

Component



Model
Year



Location



Refer
to

Combination
(Stalk)
Switch



1993-1998



Left
sidesteering
column
(turn
signals/high-low
bean
switch)

Convertible
Top
ActuatingSwitch



1994-1998



Center
console

Convertible
Top
Control
Module



1994-1998



In
lower
left
C-pillar
behind
trim
panel

Convertible
TopEnd
Position
Switch



1994-1998



In
convertible
top
linkage

Convertible
Top
Motor



1994-1998



In
left
sideof
trunk
behind
trim
panel

Convertible
Top
Position



1994-1998



In
convertible
top
linkage
Microswitch
Convertible
Top
Storage
Lid
Lock



1994-1998



In
convertible
top
compartment
left
side
Motor

Convertible
Top
Storage
Lid



1994-1998



Inright
side
convertible
top
storage
lid
latch
Microswitch

Convertible
Top
Storage
Lid
Motor



1994-1998



In
left
side
of
trunk
behind
trim
panel

Coolant
Leve¡
Sensor
(if
applicable)



1992-1998



Bolted
on
radiator,
left
side

Coolant
Temperature
Sensor



1992-1998



Left
front
of
engine/cylinder
head



Fig
.
19
.
Fig
.
20
.

Cooling
Fan
Dual
Switch



1992-1998



Right
side
radiator



Fig
.
18
.

Cooling
Fan
Motor



1992-1998



Behind
front
grill

Crankshaft
Position/RPM
Sensor



1992-1995



At
front
crankshaft
pulley

Crankshaft
Position/RPM
Sensor



1996-1998



Left
rearof
crankcase

Crash
Sensor,
Airbag



1992-1993



On
right/left
frontstrut
tower

Crash
Control
Module



1992



Auxiliary
relay
panel

Crash
Control
Module



1993-1998



Driver's
side
footwell

Crash
Sensor,
Right/Left
Side



1997-1998



Right/left
door
sill
behind
front
seat
Impact
Airbag

Cruise
Control
Actuator



1992-1998



Left
front
of
engine
compartment



Fig
.
7
.

Cruise
Control
Module



1992-1998



Behind
glove
compartment



Fig
.
8
.
Fig
.
9
.

Data
Link
Connector



1992-1998



Right
sideof
engine



Fig
.
7
.

Digital
Motor
Electronics
(DME)



1992-1998



Right
rear
engine
compartment,
behind
bulkhead
panel



Fig
.
7
.
Control
Module

DoorLock
Heater



1993-1994



Left
front
doorhandle
DoorHandle
Switch



1994-1998



left
front
door

Drive-away
Protection
(EWS
II)



1/1995
-
1998



Behind
glove
compartment



Fig
.
8
.
Module



Fig
.
9
.

Dual
Coolant
Temperature
Sensor



1997-1998



Below
intake
manifold



Fig
.
19
.

COMPONENT
LOCATIONS

Fig
.
20
.

Electronic
Immobilizer
Control



(
1/1995-1998
~
Behind
glove
compartment



Fig
.
8
.
Module
(EWS
II)



Fig
.
9
.

Continued

Tablea
.
E36
Component
Locations

Component



Model
Year



Location



Refer
to
Engine
Compartment
Light
Switch



1993-1996



Over
right
headlight
assembly



Fig
.
7
.

Engine
Control
Module
(ECM)



1992-1998



Right
rear
enginecompartment,
behind
bulkhead
panel



Fig
.
7
.

Engine
Control
Module
(System)



1992-1998



I
Power
distribution
box



Fig
.
2
.
Relay
Engine
Coolant
Leve¡
Sensor



1
1992-1998



1
Left
front
of
enginecompartment,
radiator
coolant
reservoir

Engine
Coolant
Temperature



1992-1998



I
Left
front
of
engine
under
intake
manifold



I



Fig
.
19
.
Sensor



Fig
.
20
.

Evaporative
Emission
Valve



1992-1998



Left
side
strut
Power
area

Evaporator
Temperature
Sensor



1992-1998



Left
side
of
heater
box

EWS
II
Control
Module



1/1995
-
1998



Behind
glove
compartment



Fig
.
8
.
Fig
.
9
.

EWS
II
Ring
Antenna



1
1/1995
-
1998
1
At
ignition
cylinder

EWS
II
Transmitter
Module



1/1995
-
1998



Right
side
of
steering
column
in
auxiliaryrelay
panel



Fig
.
3
.

Exhaust
Gas
Flap
Valve



1996-1998



Left
rear
muffler
area

Flasher
Relay



1992-1998



Power
distribution
box



Fig
.
2
.

Foglight
Relay



1



1992-1998



1
Power
distribution
box



1



Fig
.
2
.

Fresh
Air
FlapActuator



1



1992



1
Right
side
of
heater
box

Fresh
Air
FlapActuator



1
1993-1995



1
Below
right
side
heater
box

Fresh
Air
FlapActuator



1
1996-1998



Below
left
side
heater
box

Fuel
Injectors



1992
-
1998



Top
left
side
of
engine

Fuel
Leve¡
Sensor,
Left



1
1992-1998



/
Under
left
side
of
rear
seat
infuel
tank

Fuel
Leve¡
Sensor,
Right



1



1992-1998



1
Under
right
side
of
rear
seat
in
fuel
tank



1



Fig
.
28
.

Fuel
Pump



1



1992-1998



1



Under
right
side
of
rear
seat
in
fuel
tank



1



Fig
.
28
.

Fuel
Pump
Relay



1



1992-1998



1
Power
distribution
box



1



Fig
.
2
.

Fuel
Pump/Start
Identification
Relay



1994
-
1996



Power
distribution
box

Fuel
Tank
Pressure
Sensor



1
1997-1998



1
Right
rear
wheel
well
behind
trim
liner

ELECTRICAL
COMPONENT
LOCATIONS



610-13

Fuse
andRelay



x(Power



11992-1998



I
Left
side
of
engine
compartment



I



Fig
.
2
.
Distribution
Box



Fig
.
7
Fig
.
10
.

Gas
Filler
LockMotor



1992-1998



Right
side
of
luggage
compartment

Gear
Position/Neutral
Safety
Switch



1992-1998



Next
to
gear
shift
lever
in
center
console



Fig
.
29
.
(Automatic
Transmission
Range
Switch)

Glove
Compartment
Lock
Motor



1994-1998



Behind
glove
compartment

Grounds

G
100



1995-1998



Front
of
left
front
fender
(headlights)



Fig
.
22
.

G
101



1992-1998



Front
of
right
front
fender

Continued

COMPONENT
LOCATIONS

610-18



ELECTRICAL
COMPONENT
LOCATIONS

Tablea
.
E36
Component
Locations

Component



Model
Year



Location



Refer
to

Transmission
Control
Module



1992-1998



Right
rear
engine
compartment
behíndpanel



Fig
.
7
.

Transmission
Range
Switch
(Gear



1992-1998



Next
to
gear
shift
lever
in
center
console



Fig
.
29
.

Position/Neutra
l
Safety
Switch)

Transmission
Valve
Unít



1992-1993



In
transmission
oil
pan

Transmission
Valve
Unit



1994-1998



On
left
side
of
transmission

Trunk
Lid
Microswitch



1994-1998



In
trunk
lid

Trunk
Lid
Relay



1994-1998



Behind
glove
compartment
(convertible)



Fig
.
8
.
Fig
.
9
.

Trunk
Light
Switch



1992-1998



Left
underside
of
trunk
lid

TrunkLockMotor



1992-1998



Rear
of
luggage
compartment

UnloaderRelay



1992-1998



Inleft
splice
panel
behind
footwell
speaker
grille



Fig
.
5
.

Variable
Camshaft
Control
Module



1994-1996



I
Rear
right
side
of
engine
compartment

(VANOS)

Variable
Camshaft
Control
(VANOS)



1993-1998



Front
ofcylinder
head

Veh¡cle
Speed
Sensor



1992-1998



On
final
drive

Volume
Air
Flow
Sensor
(M42



1992-1995



Left
side
of
engine
compartment



Fig
.
7
.

Engine)

Washer
Fluid
Leve¡
Sensor



1992-1998



Right
frontof
engine
compartment

Washer
Pump



1992-1998



Right
side
of
engine
compartment
on
windshield
washer
reservoir



Fig
.
7
.

Wiper
Motor



1992-1998



Rear
engine
compartment

Wiper
Motor
Relay



1992-1998



Inleft
splice
panel
behind
footwell
speaker
grill



Fig
.
5
.

Wiper
Relay



1992-1998



(
Behind
glove
compartment



I



Fig
.
8
./
Fig
.
9
.

Wiper/Washer
Module



1992-1993



Left
side
of
footwell
under
foot
rest
(early)

Wiper/Washer
Module



1993
(late)-



Behind
glove
compartment



Fig
.
8
.
1998



1



Fig
.
9
.

ZAE
Airbag
Control
Module



1
1994-1998



1
On
center
tunnel
under
rear
seat
cushion

ZKE
IV
Control
Module



1994-1998



I
Behind
glove
compartment



Fig
.
8
.I



Fig
.
9
.

COMPONENT
LOCATIONS

611-
4



WIPERS
AND
WASHERS

2
.
Remove
wiper
arms
as
described
earlier
.

3
.
Place
engine
hood
in
service
position
.
See
410
Fend-

ers,
Engine
Hood
.

4
.
Unclip
engine
bulkhead
plenum
grille
at
base
of
wind-

shield
and
pulí
it
away
from
rubbergasket
.
See
Fig
.
5
.

Fig
.
5
.



Detach
grill
clips
(arrows)
and
pull
upward
.

0012527

5
.
Remove
wiring
harness
retaining
clip
frombulkhead
in
rear
of
engine
bay
.
Remove
screws
retaining
wiring
harness
protective
cover
.
See
Fig
.
6
.

0012529

Fig
.
6
.



Engine
bulkhead
wiring
harness
cover
screws
(arrows)
.

WINDSHIELD
WIPER
ASSEMBLY

Fig
.
7
.



Right
side
plenum
retaining
screws
(arrows)
.

7
.
On
driver's
side
of
air
plenum,
push
aside
wiring
har-

ness
and
remove
screw
retaining
plenum
.
Pull
plenum

up
andremove
from
engine
compartment
.
See
Fig
.
8
.

001¿534

Fig
.
8
.



Remove
screw
at
A
and
pull
plenum
housing
upward
.

8
.
On
6-cylinder
models
:
Remove
plastic
top
engine
cov-
ers
.
See
110Engine
Removal
and
Installation
.

NOTE-

Cover
ínside
edges
of
cowlpanelsheet
metal
with
thick
tape
to
prevent
damage
during
wiper
assembly
remov-
al
.

9
.
Remove
large
nut
and
washer
at
base
of
wiper
arm

shafts
cowi
panel
.
See
Fig
.
9
.

10
.
Remove
wiper
assembly
support
.
See
Fig
.
10
.

6
.
On
passenger
side
of
air
plenum,
push
aside
wiring



11
.
Separateharness
at
bulkhead
connector
.
See
Fig
.
11
.

harness
and
remove
twoscrews
retaining
plenum
housing
.
See
Fig
.
7
.



12
.
Wrap
protective
tape
around
wiper
shaft
on
driver's
side
to
prevent
damaging
painted
metal
during
remov-
al
.

612
Switches
and
Electrical
Accessories

GENERAL
.
.
.
.
.
.
.
.
.
...
.
.
.
.
.
...
.
......
.612-1



Headlight
switch,
replacing



..
.
...
.
.
.
.
.
.
.
.
.
612-5

Foglight
switch,
replacing
....
.
.
.
.
.
.
.
.
.
.
.
.
.
612-5
INTERIOR
SWITCHES
.
.
...
.
.
.
.
.
.
.
.....
612-1



Hazard
warning
switch,
replacing
.
.
.
.
.
.
.
.
.
.612-5
Turn
signal
switch
and
wiper
switch,



Powerwindow
switch,
replacing
.
.
.
...
.
.
.
.
.
612-5
replacing
.
.
.
.
.
.
.
...
.
.
.
.....
.
....
.
.
.
.
612-1



Outside
mirrorswitch,
replacing
.
.
.
.
.....
.
.
.612-6
Ignition
Switch
Assembly
.
.
.
.
.
.
.
.
....
.
...
612-3

Ignition
electrical
switch,
replacing
.
...
.
....
612-3



INTERIOR
LIGHTS
.
.
................
.
..
612-6

Ignition
lock
cylinder,
replacing
.
.
.
.
.....
.
..
612-4



Dome
light,
rear
map
lights,
trunk
light,

Headlight
and
Foglight
Switch
Assembly
.
.
.
.
612-5



replacing
bulbs
.
......
.
.
.
.
.
.
.
.
.
.....
.
.612-7

GENERAL



Turn
signal
switch
and
wiper
switch,

replacing
Thissection
covers
replacement
of
interior
switches
and
accessories
.



The
procedures
for
removing
the
turn
signal
stalk
switch
and
the
wiper
system
stalk
switchare
similar
.
When
working
on
electrical
switches,
always
disconnect
the
negative
(-)
cable
from
the
battery
and
insulate
the
cable
end
to
prevent
accidental
re-connection
.

CAUTION-

Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
on
page
viii
.

WARNING
-

The
cars
covered
by
this
manual
are
equipped
with
a
Supplemental
Restraint
System
(SRS)
that
auto-'
matically
deploys
one
or
more
airbags
.
Each
airbag
unit
houses
an
explosive
powerful
charge
.
Any
work
involving
the
SRS
system
should
only
be
per-
formed
byan
authorized
BMW
dealer
.
Making
re-
pairs
without
the
proper
knowledge
and
special
test
equipment
may
cause
serious
personal
injury
.
See
721
Airbag
System
(SRS)

3
.
With
front
wheels
pointed
straight
ahead,
remove
steer-
"
Testing
and
replacement
information
for
the
oil
ores-



¡ng
wheel
.
See
320
Steering
and
Wheel
Alignment
.
sure
switch
is
covered
in
119
Lubrication
System
.

NOTE-

"
Wirfng
diagramscan
be
found
in
Electrical
Wiring
Diagrams
.

"
Fuse,
relay
and
electrical
component
locations
can
be
found
in
610
Electrical
Component
Locations
.

"
Replacement
information
for
thetransmission
gear
position/neutral
safety
switch
is
covered
in
250
Gear-
shift
Unkage
.

INTERIOR
SWITCHES

NOTE
-

To
preventmarring
interior
trim,
wrap
the
tips
of
screw-
drivers
and
pliers
with
tape
beforeprying
out
switches
or
electrical
accessories
.

SWITCHES
AND
ELECTRICAL
ACCESSORIES



612-1

1
.
Disconnect
negative
(-)
cable
from
battery
and
cover
terminal
with
insulating
material
.

2
.
Remove
airbag
unit
from
steering
wheel
.
See
721
Air-
bag
System
(SRS)
.
Store
airbag
unit
in
a
safe
placew¡th
pad
facing
up
.

NOTE
-

To
helo
with
reassembly,
mark
steering
wheel
and
col-
umn
before
disassembly
.

4
.
Remove
trim
panel
from
lower
left
side
of
instrument
panel
.
See513
Interior
Trim
.

INTERIOR
SWITCHES

612-4



SWITCHES
AND
ELECTRICAL
ACCESSORIES

Fig
.
6
.



Ignition
switch
set
screws
(arrows)
.

Ignition
lock
cylinder,
replacing

NOTE-

On
cars
with
EWS
11(production
date
1/95
and
later),
the
ring
antenna
surrounding
the
ignition
switch
must
be
removed
.
See
515
Central
Locking
and
Anti-theft
.

1
.
Insert
master
key
finto
lock
cylinder
and
turn
60°
to
"ra-
dio"
position
.
See
Fig
.
7
.

Fig
.
7
.



Turn
ignition
switch
60°
to
"radio"
position
(arrow)
.

2
.
Insert
a
thin
piece
of
stiff
wire
into
opening
in
lock
cylin-
der
and
pull
lockcylinder
out
.
See
Fig
.
8
.

NOTE-

On
early
cars
(up
to
production
date
1ol95),
turn
lock
cylinder
back
12°
to
release
.

INTERIOR
SWITCHES

0012555
0011807
0011808

Fig
.
8
.



With
ignition
key
in
"radio"position,
insert
stiff
wire
into
lock
opening
to
release
cylinder
.

Headlight
and
Foglight
Switch
Assembly

The
headlight
and
foglight
switches
are
retained
in
the
left

dashboard
insert
.
This
alsocontains
the
driver's
side
face
lev-

e¡
air
vents
.
To
service
either
switch,
remove
insert
byremov-
ing
a
single
screw
.
See
Fig
.
9
.

NOTE-

Access
to
electrical
hamess
connectors
behind
dash
insert
may
be
easier
if
lower
left
dash
trim
and
driverside
knee
bolsterare
removed
.
See
513
Interior
Trim
.

Fig
.
9
.



Remove
retaíning
screw
to
pull
out
left
dash
insert
(arrow)
.

GENERAL

E36
cars
are
equipped
with
integrated
automatic
heating

and
air
conditioning
systems
.
Many
of
the
procedures
given
in

this
repair
group
require
that
the
A/C
refrigerant
charge
be

evacuated
using
specialized
equipment
.
See
A/C
System
Warningsand
Cautions
later
in
this
repair
group
.

HEATER
AND
CONTROLS

Blower
motor,
removing
and
installing

NOTE-

On
6-cylinder
cars,
the
plastic
top
enginecover
and
fuel
rail
covermustbe
removed
.
The
fuel
injectorhamess
re-
taining
screws
must
be
removed
and
the
harness
set
aside
.
The
engine
control
module
(ECM)
cover
must
be
removed,
the
control
unit
connectors
unplugged
and
the
harness
pulled
out
of
the
way
.
See
130
Fuel
Injection
.

1
.
Disconnect
negative
(-)
cable
from
battery
.

2
.
Open
hood
.
Unclip
engine
bulkhead
plenum
grille
at

base
of
windshíeld
and
remove
grille
.
See
Fig
.
1
.

HEATING
AND
AIR
CONDITIONING



640-1

640
Heating
and
Air
Conditioning

GENERAL
.
...
.
....
.
.
.
.
.
.
.
.
.
.......
.
.
.
640-1



Heater
andA/C
air
distribution
motor,

replacing(rotary-knob)
.
.
...
.
.
.
.......
.
640-10

HEATER
AND
CONTROLS
.
.....
.
.
.
.
.
.
.640-1



Rear
Window
Defogger
.
.
.



.
.
.
.
.
.
.
...
.
.
.
640-10
Blower
motor,
removing
and
installing
.
.
.
.
.
.
640-1



Rear
Window
Blower
(convertible
models)
.
.640-10

Blowermotor
resistor
pack,
replacing



.
.
.
.
.
.
640-3



AIR
CONDITIONING
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
640-11
Heater
valve,
replacing
...........
.
.
.
.
.
.
.
640-3

Heater
box,
removing
and
installing
.
.
.
.
.
.
.
.
640-4



A/CSystem
Warnings
and
Cautions
.
.
.
.
.
.
:640-11

Heater
core,
replacing
.....
.
.
:
....
.
.
.
.
.
.
.
640-6



A/C
compressor,
replacing
.
.
::.
:
:
.
.
.
.
.
.
.
.640-12

Heater
core
temperature
sensor,
replacing
.
.
640-7



A/C
Compressor
Clutch
.
.
.
.
.
.
.
:
.
.
.
.
.
.
.
.
.
640-13

Heater
andA/C
Control
Head
.
.
....
.
.....
.
640-7



A/C
condenser,
replacing
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
640-14

Heater
andA/C
control
head,
removing



A/C
receiver/drier,
replacing
.
.
.
.
.
.
.
.
.
.
.
.
.
640-15
and
installing
(rotary-knob)
.
.
....
.
......
640-7



A/C
expansion
valve,

Heater
andA/C
control
head,
removing



removing
and
installing
...
.
.....
.
.
.
.
.
.
.
640-16
and
installing
(digital-display)
.
.....
.
.....
640-8



A/C
evaporator,
removing
and
installing
.
.
..
640-17

Heater
andA/C
control
module,removing



A/C
evaporator
temperature
sensor,

and
installing
(rotary-knob)
.
.
...
.
.
.
.
.
.
.
.
640-8



replacing
.
.
.
.
.
.
..............
.
.
.
.
.
..
640-17

Heater
andA/C
control
module,removing



A/C
microfilter,
replacing
......
.
....
.
.
.
..
640-18

and
installing
(digital-display)
.
...
.
.
.
.
.
...
640-8

Sensor
fan
for
interior
temperature,



TABLES

replacing
.
.
.
....
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
640-9



a
.
Blower
Motor
Test
Values
.........
...
.
.
......
640-3

Heater
andA/C
AirDistribution
Motors
.
.
.
.
.
.
640-9



b
.
Heater
Core
Temperature
Sensor
Test
Values
...
.640-7

c
.
Evaporative
Temperature
Sensor
Test
Values
...
640-17

d
.
A/C
System
Fluid
Capacities
(total)
..
..........
640-18

0012527

Fig
.
1
.
Detach
grille
retaining
clips
(arrows)
and
pull
grille
upward
and
out
of
rubbergasket
.

CAUTION-

Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautionsgiven
at
the
front
of
this
manual
onpage
viii
.

HEATER
AND
CONTROLS