Engine sensor BMW 318i 1994 E36 Owners Manual

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

610-14



ELECTRICAL
COMPONENT
LOCATIONS

Component



Model
Year



Location



Refer
to

G
102



1992-1998



Left
front
strut
tower

G
103



1992-1998



Right
front
strut
tower

G
110



1992-1998



Left
front
of
engine

G
111



1992-1998



Near
battery

G
117



1992-1998



Right
rearof
engine

G
119



1992-
1998



Right
front
of
engine

G
123



1992-1998



Right
side
of
safety
wall

G
200



1992-1998



Left
kick
panel

G
201



1992-1998



Right
side
ofI/P

G
202



1992-1998



Left
side
ofI/P

G
203



1992-1998



Right
kick
panel

G
230



1992-1998



Right
kick
panel

G
301



1992-1998



Below
rightfront
seat

G
302



1992-1998



Below
center
console

G
303



1992-1998



Below
right
rear
seat

G
310



1992-1998



Behind
right
rear
seat

G
312



1992-1998



Behind
left
rear
seat

G
313



1992-1998



Right
side
of
rear
shelf

G
314



1992-1998



Left
side
of
rear
shelf

G
400



1992-1998



Left
front
side
of
trunk

G
404



1992-1998



Left
rearside
of
trunk

Camshaft
Position
Sensor



1992-1998



Front
of
engine



Fig
.
7
.

Hard
Top,
Connector
1



1994-1998



In
convertible
top
compartment
left
side

Hard
Top,
Connector
II



1994-1998



In
convertible
top
compartment
left
side

Hazard
Flasher
Relay



1992-1998



Power
distribution
box



Fig
.
2
.

Headlight
High
Beam
Relay



1998



Left
hand
side
of
dash
behind
instrument
cluster

Headlight
High
Beam
Relay



1992-1997



Power
distribution
box

Headlight
Low
Beam
Relay



1992-1998



Power
distribution
box

Heat
ExchangerTemperature



1993-1998



Center
console
Sensors
(left
and
right)

HeaterBlower
Motor



1992-1998



Behind
fresh
air
cowl
HeaterBlower
Motor
Relay



1992-1998



Power
distribution
box



Fig
.
2
.

Heat
Rear
Recirculation
Flap



1997-1998



Right
sideof
heater
box
Actuator

COMPONENTLOCATIONS

Tablea
.
E36
Component
Locations

Continued

Component



Model
Year



Location



Refer
to

Heater
Recirculation
Flap
Actuator



1992-1998



Below
left
dash
right
side
of
steering
column

HeaterBlowerMotor
Resistor
Pack



1992-1998



Behind
center
of
dashboard

Heater
Regulator
FlapActuator



1997-1998



Right
side
of
heater
box

HeaterValve
Assembly



1992-1998



Left
rear
engine
compartment

HeatingNentilation
Relay
Box



1992-1993



Below
left
side
of
dash

HeatingNentilation
Relay



1994-1998



Left
front
footwell

High
Speed
Cooling
Fan
Relay



1992-1998



Power
distribution
box



Fig
.
2
.

Homs,
Right/Left



1993-1998



Front
of
engine
compartment

Horn
Relay



1992-1998



Power
distribution
box



Fig
.
2
.

Horn
Relay
(Alpine)



1994-1998



Behind
glove
compartment



Fig
.
8
.
Board
Computer/Anti-Theft



Fig
.
9
.

Idle
Speed
Control
Valve



1992-1995



Top
rearof
enginebehind
intake
manifold
(M42
engine)



Fig
.
11
.

Idle
Speed
Control
Valve



1992-1995



Top
left
side
of
engine
(M50
engine)

Idle
Speed
Control
Valve



1993-1996



Below
intake
manifold
(M50/S50US
engine)

Idle
Speed
Control
Valve



1996-1998



On
throttle
housing
(M44
engine)



Fig
.
15
.

Idle
Speed
Control
Valve



1997-1998



Left
front
of
engine
below
intake
manifold
(M52/S52US
engine)

Ignition
Coils



1992-1998



Right
of
engineunder
plastic
cover
(four-cylinder)



Fig
.
7
.

Ignition
Cofs



1992-1998



Top
of
engine
undercover
(six-cylinder)



Fig
.
17
.

Ignition
Switch



1992-1998



Right
sídeofsteering
column

Intake
Air
Resonance
Changeover



1992-1998



Leftrear
of
engine
compartment
Valve(DISA)

Intake
Air
Temperature
Sensor



1992-1995



In
mass
air
flow
sensor
(M42
engine)

Intake
Air
TemperatureSensor



1996-1998



In
top
ofair
filter
housing
(M44
engine)



Fig
.
12
.

Intake
Air
Temperature
Sensor



1992-1998



I
Left
sídeof
engine
in
intake
manifold
(six-cylinder)



-



-



I



Fig
.
13
.
Fig
.
14
.

Kick-Down
Switch
(A/T)



1
1992-1998



1
Left
footwell

Mixing
Actuators



1
1992-1998



1
Heater
box

ELECTRICAL
COMPONENT
LOCATIONS



610-15

Table
a
.
E36
Component
Locations

Knock
Sensors



1
1992-1998



1
Left
side
of
engine
block

Left
Front
Power
Window
Motor



11992-1998



/
Left
front
door

Left
Front
Window
Monitoring
Switch
1
1997-1998



1
Left
front
door
trim
panel

Left
Front
Window
Retraction
Switch
1
1992
-
1993



1
Left
front
door
handle
lock
assembly

Left
Splice
Panel



1
1992-1998



1
Under
left
side
of
dash
at
kick-panel



1



Fig
.
5
.

Main
Fuse
and
Relay
Box
(Power



1992-1998



I
Left
sideof
engine
compartment



Fig
.
2
.
Distribution
Box)
1



I

Mass
Air
Flow
Sensor



1992-1998



I
Left
side
of
engine,
intake
air
duct



Fig
.
7
.1



I
Fig
.
15
.

Continued

COMPONENT
LOCATIONS

610-16



ELECTRICAL
COMPONENT
LOCATIONS

Component



Model
Year



Location



Refer
to

MixingSwitch



1992-1994



Center
console

Multi-Function
Clock



1992-1998



Center
console

Multi-information
Display
(MDI)



1992-1998



Center
console

Normal
Speed
Cooling
Fan
Relay



1992-1998



Power
distribution
box



Fig
.
2
.

Neutral
SafetySwitch
(Automatic



1992-1998



Next
to
gear
shift
lever
in
center
console



Fig
.
29
.

Transmission
Range
Switch)

Oil
Pressure
Switch



1992-1998



Left
front
of
engine
below
intake
manifold
at
oil
filter
housing

On-Board
Computer



1992-1998



Center
console

On-BoardComputerHorn
Relay



1992-1998



Behind
glove
compartment



Fig
.
8
.
Fig
.
9
.

On-Board
Computer
Temperature



11992-1998



I
Right
front
of
engine
compartment

Sensor

Outside
Temperature
Sensor



1992-1997



Inright
front
brake
cooling
duct

Outside
Temperature
Sensor



1998



Right
rear
of
engine
compartment
behind
fresh
air
cowl

Oxygen
Sensor
HeaterRelay



1992-1998



Power
distribution
box



Fig
.
2
.

Oxygen
Sensor(s)



1992-1998



On
exhaust
pipe
ahead/behind
catalytic
converter
(M42/M44
engine)

Oxygen
Sensor
(x2)



1992-1995



On
exhaust
pipe
ahead
of
catalytic
converter
(M50/S50US
engine)

Oxygen
Sensors
(x4)



1996-1998



On
exhaust
manifold/exhaust
pípe
behind
catalytic
converter
(M52/S52US
engine)

Parking
Brake
Switch



1
1992-1998



I
On
rear
of
parking
brake
lever

Power
Distribution
Box



11992-1998



I
Rear
left
of
engine
compartment



I



Fig
.
2
.
Fig
.
7
.
Fig
.
10
.

Radio
Microswitch



1992
-
1996



Center
console
behind
radio

Radio
Receíver



1
1997-1998



1
Right
rear
luggage
compartment

Relay
And
Fuse
Box
(Power



1992-1998



I
Left
side
of
engine
compartment



I



Fig
.
2
.

Distribution
Box)



Fig
.
7
.
Fig
.
10
.

Rear
Window
Blower



1994-1998



Behind
rear
seat
(convertible)

Rear
Window
Blower
Microswitch



1994-1994



At
convertible
top
linkage

Rear
Window
Blower
Microswitch



1995-1998



Behind
rear
seat
(convertible)

Rear
Window
BlowerRelay



11994-1998



Behind
glove
compartment



Fig
.
8
.
Fig
.
9
.

Fig
.
2
.

Fig
.
30
.

Fig
.
8
.

Rear
Window
DefoggerRelay

Reversing
(Back-up)
Light
Switch

SplicePanel,
Right
Rollover
Protection
Actuator



11994-1998

COMPONENT
LOCATIONS

Table
a
.
E36
Component
Locations

1992-1998
1992-1998

1992-1998

Power
distribution
box

Right
or
left
side
top
of
transmission

Behind
glove
compartment

Behind
rear
seat
(convertible)

Fig
.
9
.

Continued

Tablea
.
E36
Component
Locations

Component



Model
Year



Location



Refer
to
Rollover
Sensor



1994-1998



In
lower
left
C-pillar
behind
trim
panel
(Convertible)

Seat
Belt
Switch



1992-1998



In
front
seat
belt
buckle

SeatCushion
Tilt
Motor



1992-1998



Under
front
seat

Seat
Heater



1993-1998



Under
front
seat

Seat
Height
Motor
Front



1992-1998



Under
front
seat

Seat
Movement
Motor



1992-1998



Under
front
seat

Seatback
Heater



1993-1998



In
upper
front
seatback

Seatback
Recliner
Motor



1993-1998



Under
front
seat

Seat
Occupancy
Detector



1994-1998



Under
rightfront
seat

Secondary
Air
Pump
(4-cyl
.)



1997
1
/2
-
1998



Left
engine
compartment,
belowpower
distribution
box
(M44
engine)

Secondary
Air
Pump
(6-cyl
.)



1996-1998



Front
of
engine
compartment
(M52/S52US
engine)

Secondary
Air
Pump
Relay



1996-1998



Power
distribution
box



Fig
.
2
.

Secondary
Air
Pump
Valve



1996-1998



Right
sideof
engine

Side
Impact
Air
Bag
Right/Left



1997-1998



Behind
right/left
door
trim
panel

Síde
Impact
Airbag
Crash
Sensor,



1997-1998



Right/left
door
si¡¡
behind
front
seat
Right/Left

Shift
Interlock



1992-1998



Center
console
beside
shift
selector

Slip
Control
Module
(ABS/AST)



1992-1998



Behind
glove
compartment



Fig
.
8
.
Fig
.
9
.

Splice
Panel,
Left
Side



1992-1998



Behind
footwell
speaker
grill



Fig
.
5
.

SplicePanel,
Right
Side



1992-1998



Behind
glove
compartment



Fig
.
6
.

Starter



1992-1998



Leftrear
of
engine

Starter
Immobilization
Relay



1994-1998



In
left
splice
panelbehind
footwell
speaker
grill

Starter
Relay



1992-1993



Below
left
side
of
dash

Starter
Relay



1994-1998



Behind
left
footwell
speaker
grill

Sunroof
Control
Assembly



1992-1998



In
roof
center
panel

Supplemental
Restraint
System



11992-1993



I
Behind
glove
compartment



I



Fig
.
8
.
(Airbag)
Control
Module



Fig
.
9
.

Supplemental
Restraint
System



1994-1998



1
Under
center
of
rear
seat
(Airbag
ZAE)
Control
Module

Switch,
Power
Window



1
1992-1998



1
Center
console

Telephone
Eject
Box



1
1994-1996



1
Center
console

ELECTRICAL
COMPONENT
LOCATIONS



610-17

Telephone
Transceiver



1992-1992



In
luggage
compartment

Throttle
Flap
Heater



1994-1996



Left
sideof
engine

Throttle
Position
Sensor



1992-1998



I
Left
sideof
engine
inthrottle
housing



I



Fig
.
7
.
Fig
.
15
.
Fig
.
21
.

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

WINDSHIELD
CLEANING
SYSTEM



Washer
f
luid
reservoir,
replacing

1
.
Open
hood
and
siphon
out
washer
fluid
reservoir
.
The
windshieldcleaning
system
includes
the
spray
nozzles

in
the
engine
hood,
the
washer
fluid
pump,
and
the
washer
flu-

id
reservoir
in
the
front
passenger
side
of
the
engine
compart-

ment
.

The
windshield
spray
nozzles
can
be
aimed
by
using
asew-

ing
need1e
or
a
similar
diameter
stiff
piece
of
wire
.

Windshield
spray
nozzle,

removing
and
installing

1
.
Open
hood
andremove
hood
insulating
pad
retaining
clips
until
bottom
of
nozzle
canbe
fully
accessed
.
See
410
Fenders,
Engine
Hood
.

2
.
Carefully
disconnect
hose
from
nozzle
.
Disconnect
har-

ness
connectors
for
nozzleheater
.

3
.
Push
nozzleout
of
hood
.
See
Fig
.
21
.

Fig
.
21
.
First
push
nozzle
forward
then
upward
from
underneath
hood
.

4
.
Installation
is
reverse
of
removal,
noting
the
following
:

"
Check
that
colors
of
harness
and
nozzle
connector

match
.

"
Check
and
adjust
nozzles
before
driving
.

WIPERSAND
WASHERS



611-
9

2
.
Remove
windshield
washer
pump
and
hose
as
de-

scribed
later
.

3
.
Remove
windshield
washer
fluid
level
sensor
as
de-

scribed
later
.

4
.
Remove
large
plastic
washer
reservoir
retainer
at
fend-

e
r
.

5
.
Remove
reservoir
.

6
.
Installation
is
reverse
of
removal,
noting
the
following
:

"
On
installation
check
that
washer
fluid
hose
is
not
kinked
.

"
Replacehose
clamp
.

Windshield
washer
fluid
pump,
replacing

The
windshield
washer
fluid
pump
ís
mounted
in
the
washer

fluid
reservoir
.

1
.
Open
hood
and
siphon
out
washer
fluid
reservoir
.

2
.
Depress
retaining
tabs
on
electrical
connector
and
un-

plug
harness
connector
from
pump
.

3
.
Loosen
hose
clamp
and
remove
washer
fluidline
from

washer
pump
.

4
.
PA
pump
out
of
tank
.
See
Fig
.
22
.

Fig
.
22
.
Pull
windshield
washer
pump
up
to
remove
(arrow)
.

5
.
Installation
is
reverse
of
removal
.
Check
pump
to
tank

sealing
grommet
for
damage
and
correct
fit
.
Replace

hose
clamp
.
Check
that
washer
fluid
hose
is
free
of

kinks
.

WINDSHIELD
CLEANING
SYSTEM

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

640-4



HEATING
AND
AIR
CONDITIONING

Heater
box,
removing
and
installing

The
heater
box,
located
underneath
thecenter
of
the
dash-

board,
houses
theheater
core,
the
A/C
evaporator,
and
asso-

ciated
sensors
and
actuators
.
Removal
of
theheater
box

requires
that
the
A/C
refrigerant
be
discharged
.

CAUTION-

"
Removing
the
heater
box
requires
evacuating
the
AIC
system
.
DO
NOT
attempt
this
procedure
without
proper
tools
and
training
.

"
Any
person
who
services
a
motor
vehicle
air
con-

ditioner
must,
by
law,
be
properly
trained
and
cer-
tified,
and
use
approved
refrigerant
recycling
equipment
.
Technicians
must
complete
an
EPA-
approved
recycling
course
to
be
certified
UU12639

Fig
.
10
.
Heater
core
mounting
nuts
at
left
sideof
bulkhead
(arrow)
.

1
.
Drain
engine
coolant
.
See
170
Radiator
and
Cooling



wiper
assembly
shown
removed
for
clarity
.

System
.

2
.
Remove
complete
dashboard
.
See513
Interior
Trim
.

3
.
Remove
blower
motoras
described
earlier
.

4
.
Remove
nut
retaining
water
hose
flange
to
rear
bulk-
head
.
I'ush
flange
to
one
side
.
See
Fig
.
9
.

Fig
.
9
.



Nut
retaining
coolant
hose
flangeat
bulkhead
(arrow)
.

NOTE-

Clear
any
remaining
coolant
from
the
heater
core
by
blowing
compressed
air
finto
the
coolant
feed
hose
.

HEATER
AND
CONTROLS

0012638b

6
.
Cut
wire
tie
holding
wire
harness
to
heater
box
and
dis-

connect
cable
harness
connector
from
heater
box
.
See

Fig
.
11
.

0012647

Fig
.
11
.
Harness
connectors
(A)
and
cable
tie
(B)
at
heaterbox,
under
driver
side
dash
.

7
.
Followingmanufacturer's
instructions,
connect
ap-

proved
refrigerant
recovery/recycling/recharging
unitto

A/C
system
and
discharge
system
.

8
.
Unbolt
A/C
refrigerantlines
flange
from
engine
bay
bulkhead
.
See
Fig
.
12
.

9
.
On
models
with
rotary-knob
A/C
control
head
:
Discon-
5
.
Remove
nuts
from
heater
box
retaining
bracket
on
en-



nect
wiring
harness
connectors
to
A/C
control
module
gine
bulkhead
left
side
.
See
Fig
.
10
.
Repeat
procedure



in
center
console
and
remove
module
.
See
Fig
.
13
.
for
right
side
nuts
.

640-6



HEATING
AND
AIRCONDITIONING

Heater
core,replacing

1.
Drain
engíne
coolant
.
See170
Radiator
and
Cooling

System
.

WARNING
-

Allow
the
cooling
system
to
cool
before
opening
or
drainíng
the
cooling
system
.

2
.
Remove
center
console
.
See
513
Interior
Trim
.

3
.
Remove
Multi-Information
Display
(MID)
module
.
See

620
Instruments
.

4
.
Remove
lower
dash
panel
and
knee
bolster
on
driver

side
.
See
513
Interior
Trim
.

Fig
.
17
.
Wire
harness
retaining
clips
and
wire
ties
at
heater
box
cover
5
.
Working
under
driver
side
of
dash,
remove
coolant



(arrows)
.
flange
from
heater
core
.
See
Fig
.
16
.

0012651

Fig
.
16
.
Bolts
at
3-way
coolant
flange
under
driver's
side
of
dash
(ar-
rows)
.

NOTE-

Residual
coolant
in
heater
core
will
spill
.
Protect
thecarpet
.

6
.
Working
at
front
of
driveshaft
tunnel,
unclip
wire
har-

nesses
and
move
to
one
side
in
front
of
heater
box
.
See
Fig
.
17
.

7
.
Remove
heatercore
temperature
sensorsas
described

later
in
this
repair
group
.

8
.
Remove
front
heater
box
cover
.
See
Fig
.
18
.

9
.
On
right
side
of
heater
box,
unclip
heater
air
duct
actu-
ating
lever
.
Remove
cross-rod
(with
flaps)
from
frontof
heater
core
.
See
Fig
.
19
.

HEATER
AND
CONTROLS

0012662

Fig
.
18
.
Screws
retaining
front
heater
box
cover
(shown
removed)
to
heater
box
(arrows)
.

0012661
Fig
.
19
.
Pry
heater
flap
actuating
lever
in
direction
A
.
Pull
offair
flap
cross-rod
in
direction
B
.