130 BMW 323i 1996 E36 Workshop Manual

610-26



ELECTRICAL
COMPONENT
LOCATIONS

Fuses31-46

v
.

-------------

Fuses
21-30

Fuses1-20

Fuse
positions
1-46
in
front
power
distribution
box

Tablee
.
1995
E36
Fuse
Positions

fuse



Rating



Protected
Circuit

1



30A



Power
sunroof

2



15A



Not
used

3



30A



Headlight
washer
(also
see
f
use
37)

4



15A



Heated
seats
(see
alsofuse
23)

5



30A



Power
seats
(see
alsofuse
40)

6



20A



Rear
window
defogger/blower(see
also
f
use
23)

7



5A



Central
body
electronics
(ZKE
IV)
(convertible
only)
(see
also
fuse
14,31,33,
35,43)
Centrallocking
(see
also
fuse
26,28,
35)
Convertible
roof
(see
also
fuse
27,
35,
42,43)
Interiorlights
(also
see
fuse
33,
43)
Roll-over
protection
(seealsofuse
35,42,
43)

8
I



15A
I
Horn

9
1



20A
1
Sound
system
(seealsofuse
33,
44)

0013034

10



30A



ABS
(seealsofuse
21,23,
27,
38,46,
47)
AST
(see
also
fuse
21,
26,27,38,
46)

11



7
.5A



Headlights/foglights
(see
also
fuse
12,
15,
17,
23,
25,29,
30)
On-Board
Computer
(seealsofuse
12,23,27,
31,
33,37,45,
46)

12



7
.5A



Headlights/foglights
(see
also
fuse
11,
15,
17,
23,25,
29,
30)
On-BoardComputer
(see
also
fuse
11,
23,27,
31,
33,37,45,
46)

13
I



5A
I
Notused
14



30A
~
Central
body
electronics
(ZKE
IV)
(see
alsofuse
7,
14,31,
33,
35,
43)
Front
power
Windows

15



15A



Headlights/foglights
(seealso
fuse
11,
12,
17,23,25,
29,30)

FOSE
POSITION
TABLES

Tablee
.
1995
E36
Fuse
Positions

fuse



1
Rating



1
Protected
Circuit

16



5A
~
Engine
control
module
(see
also
f
use
28,39)
Heating
andA/C
(IHKR
E36)(see
alsofuse
20,
23,31,
37,
39,
41)

17



10A



Headlights/foglights
(see
also
fuse
11,12,15,23,25,
29,
30)

18
1



15A
1
Fuel
pump

19
1



30A
1
Rear
power
Windows

20



30A



Blowermotor
Heating
andA/C
(IHKR
E36)
(see
also
fuse
16,23,31,
37,
39,
41)
Park
ventilation

21



5A



ABS
(seealsofuse
10,23,27,38,
46,47)
AST
(see
also
fuse
10,26,
27,
38,
46)

22



5A
~



Instrument
illumination
(see
also
f
use
25,
33,37)
Park/taillights
(see
also
fuse
33,
37)

23



5A



ABS
(seealsofuse
10,
21,
27,38,
46)
Headlights/foglights
(see
also
fuse
11,12,15,17,25,
29,
30)
Heated
seats
(see
also
fuse
4)
Heating
andA/C
(IHKR
E36)(see
alsofuse
16,20,31,
37,39,41)
Instrument
cluster
(see
also
f
use
27,31,
46)
Multi-function
clock
(see
also
fuse
26,27,31,
45,46)
On-Board
Computer
(seealso
f
use
11,
12,
27,
31,33,
37,
45,
46)
On-Board
Display
(seealso
fuse
26,27,31,
45,46)
Rear
window
defogger/blower
(see
also
f
use
6)
Turn
signals/hazard
lights
(see
also
f
use
34)

24
I



10A
I



Power
mirrors

25



5A



Headlights/foglights
(see
also
fuse
11,
12,
15,17,23,
29,
30)
Instrument
illumination
(see
also
fuse
22,33,
37)

26



10A



AST
(see
also
fuse
10,21,
27,
38,
46)
Back-up
lights
Centrallocking
(seealsofuse
7,
28,
35)
Electronic
transmission
control
(A4S
310R/Z)
(seealso
tuse
28,
46)
Multi-function
clock
(see
also
fuse
23,
27,31,
45,46)
On-Board
Display
(see
also
fuse
23,27,31,
45,46)
Starting
system
(see
alsofuse
28)

27



5A



ABS
(seealso
fuse
10,
21,
23,38,
46,47)
AST
(see
also
fuse
10,21,
26,
38,
46)
Convertible
roof
(see
also
f
use
7,
35,42,43)
Instrument
cluster
(seealso
f
use
23,
31,
46)
Multi-function
clock
(see
also
fuse
23,26,31,
45,46)
On-Board
Computer
(seealsofuse
11,
12,
23,
26,
31,33,
37,
45,
46)
On-Board
Display
(see
also
f
use
23,31,45,
46)

610-28



ELECTRICAL
COMPONENT
LOCATIONS

Fuses
31-46

k
Lírcoo)]
LE

7a
Maz

Fuses
21-30

Fuse
positions
1-46
in
front
power
distribution
box
Table
f
.
1996
E36
Fuse
Positions

fuse



Rating



Protected
Circuit

1



30A



Power
sunroof
(see
also
fuse
13)

2



15A



Notused
3



30A



Headlight
washer
(also
see
fuse
37)

4



15A



Heated
seats
(seealsofuse
23)

5



30A



Power
seats
(see
also
f
use
40)

6



20A



Rear
window
defogger/blower
(see
also
f
use
23)

7



5A



Central
body
electronics
(ZKE
IV)
(convertible
only)
(see
also
f
use
14,33,
35,
43)
Central
locking
(seealso
fuse
26,28,
35)
Convertible
roof
(seealsofuse
27,35,42,43)
Interiorlights
(also
see
fuse
33,
43)
Rol¡-oven
protection
(see
also
fuse
35,
42,
43)

8
I



15A
I
Horn
9
1



20A
1
Sound
system
(see
also
fuse
44)

10



30A



ABS
(seealsofuse
21,23,
27,38,46,
47)
AST
(see
also
fuse
21,26,27,
38,46)

11



7.5A



Headlights/foglights
(see
also
fuse
12,15,17,23,25,
29,30)
On-Board
Computer
(seealso
fuse
12,23,27,31,33,
37,45,46)

12



7
.5A



Headlights/foglights
(see
also
fuse
11,15,17,
23,
25,
29,30)
On-Board
Computer
(see
also
f
use
11,23,27,
31,
33,37,
45,46)

13
1



5A
1
Power
sunroof
(seealsofuse
1)

14



30A
~
Central
body
electronics
(ZKE
IV)
(see
also
fuse
7,
14,33,35,
43)
Front
power
windows

15



15A



Headlights/foglights
(see
also
fuse
11,12,17,23,25,29,
30)

FUSE
POSITION
TABLES

Fuses
1-20

0013034

Table
f
.
1996
E36
Fuse
Positions

fuse



1
Rating



1
Protected
Circult

16



5A
~
Engine
control
module
(see
also
f
use
28,
39)
Heating
andA/C
(IHKR
E36)(see
also
fuse
20,
23,31,37,39,41,
48)

17



10A



Headlights/foglights
(see
also
f
use
11,12,
15,23,25,29,
30)

18
1



15A
1
Fuel
pump

19
1



30A
1
Rear
power
windows

20



30A



Blower
motor
Heating
andA/C
(IHKR
E36)
(see
also
fuse
16,23,31,37,39,41,
48)
Park
ventilatíon

21



5A



ABS
(seealsofuse
10,23,
27,38,
46,
47)
AST
(see
alsofuse
10,
26,
27,38,
46)

22



5A



Instrument
illumínation
(see
also
f
use
25,33,
37)

23



5A



ABS
(see
also
fuse
10,21,
27,38,
46)
Headlights/foglights
(see
alsofuse
11,12,
15,17,25,29,
30)
Heated
seats
(seealsofuse
4)
Heating
andA/C
(IHKR
E36)(see
also
fuse
16,20,
31,
37,39,
41,48)
Instrument
cluster
(see
alsofuse
27,
31,46)
Multi-function
clock
(see
alsofuse
26,27,31,
45,46)
On-BoardComputen
(seealso
f
use
11,12,27,31,
33,
37,45,
46)
On-Board
Display
(see
alsofuse
26,
27,31,
45,46)
Rear
window
defogger/blower
(see
also
fuse
6)

Turn
signals/hazard
lights
(seealsofuse
34)

24
I



10A
I
Power
mirrors

25



5A



Headlights/foglights
(see
also
fuse
11,
12,15,
17,
23,
29,
30)
Instrument
illumination
(seealso
fuse
22,
33,
37)

26



10A



Airbag
(SRS)
(see
also
fuse
43)
AST
(see
also
f
use
10,21,
27,
38,
46)
Back-up
lights
Central
locking
(seealsofuse
7,
28,
35)
Electronic
transmission
control
(A4S
310R/Z)
(seealso
f
use
28,
46)
Multi-function
clock
(see
alsofuse
23,27,31,
45,46)
On-Board
Display
(see
also
fuse
23,
27,
31,
45,46)
Starting
system
(see
also
fuse
28)
.

27



5A



ABS
(see
also
fuse
10,21,
23,38,
46,
47)
AST
(see
also
fuse
10,
21,
26,38,
46)
Convertible
roof
(see
also
f
use
7,
35,42,
43)
Instrument
cluster
(see
alsofuse
23,
31,46)
Multi-function
clock
(see
alsofuse
23,26,
31,
45,46)
On-Board
Computer
(seealsofuse
11,12,
23,
26,31,33,37,
45,46)
On-Board
Display
(see
also
fuse
23,
31,45,
46)

610-30



ELECTRICAL
COMPONENT
LOCATIONS

Fuses
31-46

v

--------------

15A
I
Horn
Fuses21-30

Fuses
1-20

Fuse
positions
1-46
in
front
power
distribution
box

Tableg
.
1997-1998
E36
Fuse
Positions

fuse



Rating



Protected
Circuit

1



I



30A
I



Power
sunroof

4
1



15A
1
Heated
seats
(see
also
fuse
23)

5
1



30A
1
Power
seats
(see
also
fuse
40)

10



30A



ABS
(see
also
fuse
21,27,38,
46)
AST
(see
alsofuse21,27,
38,
46)

13
I



5A
I
Not
used

FUSE
POSITION
TABLES

0013034

2
I



5A



Engine
controls
DME
M5
.2
(see
also
fuses
16,18,
39,
46)

30A



Wiper/washer
module
(seealso
fuse
36,37,44)

20A
~
Rear
window
defogger/blower
(see
also
f
use23,43)
Antenna
(see
also
fuse
23)

5A
~
Central
locking
(seealso
fuse
28,31,35,
45)
Convertible
roof
(see
also
fuse
24,
27,42,
43,49)
9
1



20A
1
Sound
system
(see
also
fuse
33,43,
44)

11



7
.5A



Headlights/foglights
(see
also
fuse
12,15,
23,
25,29,
30)
On-Board
Computer
(see
also
fuse
12,23,
26,
27,31,33,
37,45,
46)

12



7
.5A



Headlights/foglights
(see
also
fuse
11,15,
23,
25,29,
30)
On-Board
Computer
(see
also
f
use
11,23,
26,27,
31,33,
37,45,
46)

14
I



30A
~
Central
body
electronics
(ZKE
IV)
(see
also
fuse
33,
35,43)
Power
windows
(seealso
f
use
19)

15



15A



Headlights/foglights
(see
alsofuse
11,
12,23,25,
29,
30)

Tableg
.
1997-1998
E36
Fuse
Positions

fuse



1
Rating



1
Protected
Circuit

16



5A



Engíne
control
DME
M5
.2
(see
alsofuse
2,
18,39,
46)
Engine
control
DME
MS
41
.1
(see
also
fuse
18,39,46,
50)
Heating
andA/C
(IHKR
E36)
(see
also
fuse
20,
23,31,39,41,
48)

17
I



10A
1
Not
used

18



15A



Engine
control
DME
M5
.2
(seealso
fuse
2,
16,39,
46)
Engine
control
MS
41.1(seealso
fuse
16,
39,
46,50)

19
1



30A
j
Power
windows
(seealsofuse
14

20



30A



Blowermotor
Heating
andA/C
(IHKR
E36)
(see
also
fuse
16,
23,
31,37,39,
48)
Park
ventilation

21



5A



ABS
(seealso
f
use
10,
27,38,
46)
AST
(see
also
fuse
10,27,38,
46)

22



5A



Instrument
illumination
(see
also
f
use
25,
33,
37)

23



5A



Antenna
(see
also
fuse
6)
Headlights/foglights
(see
also
fuse
11,
12,
15,
25,
29,
30)
Heated
seats
(see
also
fuse
4)
Heating
andA/C
(IHKR
E36)(see
also
fuse
16,
20,
31,39,41,
48)
Instrument
cluster
(seealso
f
use
27,
31,45,
46)
Multi-function
clock
(seealsofuse
26,27,31,
45,46)
On-Board
Computer
(see
also
fuse
11,12,27,
31,
33,37,45,
46)
On-Board
Display
(seealsofuse
26,27,
31,
45,46)
Rear
window
defogger/blower
(see
also
f
use6,43)Turn
signals/hazard
lights
(seealsofuse
34)

24



10A
~
Convertible
roof
(see
also
f
use
7,
27,42,43,
49)
Power
mirrors

25



5A



Headlights/foglights
(seealso
fuse
11,12,
15,23,
29,30)
Instrument
illumination
(seealso
fuse
22,33,
37)

26



10A



Back-up
lights
Electronic
transmission
control
(A4S
310R/Z)
(see
also
f
use
28,
46)
Electronic
transmission
control
(A5S
310Z)
(see
also
fuses
28,46)
Multi-function
clock
(see
also
fuse
23,
27,
31,
45,46)
On-Board
Computer
(see
alsofuse
11,
12,
23,
27,31,33,37,45,
46)

4
.
Installation
is
reverse
of
removal
.
Recheck
wiper
arm

tightening
torque
after
waiting
15minutes
.

Tightening
Torque

"
Wiper
arm
to
wiper
shaft
..........
25
Nm
(18
ft-Ib)

WINDSHIELD
WIPER
ASSEMBLY

The
windshield
wiper
assembly
(linkage
and
motor)
is
re-

moved
asa
single
unit
.
Once
the
assembly
is
removed,
the

wiper
motor
and
other
linkage
parts
can
be
repairedor
re-

placed
.
Foran
illustration
of
wiper
assembly
components,
see

Fig
.
4
.

Hex
nut

I

J

Wiper
motor

Fig
.
4
.



Windshield
wiper
motor
assembly
and
related
parts
.

WIPERS
AND
WASHERS



611-
3

Windshield
wiperassembly,

removing
and
installing

(4-door
modeis)

1
.
Disconnect
negative
(-)
cable
from
battery
.

NOTE
-

Thewiperarms
should
be
in
the
parked
position
before
removing
the
wiper
assembly
.
To
avoid
damaging
the
wiper
arms
and
pivots,
do
not
manually
slide
or
force
the
wiper
arms
across
the
windshield
.

CAUTION
-

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

0013030

WINDSHIELD
WIPER
ASSEMBLY

3
.
Break
open
plastic
retainer
in
back
of
instrument
clus-
ter
andremove
coding
plug
.
See
Fig
.
5
.

5
.
Reset
vehicle
mileage
.

1
ILO

NOTE-

Consultan
authorized
BMW
dealer
service
department
about
resetting
vehicle
mileage
using
the
special
BMW
Service
tester
.

Vehicle
speed
sender,
replacing

0

0013029

Fig
.
5
.



Remove
coding
plug
retainer
with
a
screwdriver
(arrow)
.

4
.
Install
coding
plug
and
new
retainer
.
Reinstall
instru-
ment
cluster
.

The
vehicle
speed
sender
supplies
an
electronic
pulsed

speed
signal
to
the
speedometer
.
The
sender
is
mounted
be-

neath
the
rear
of
the
car,
on
the
differential
cover
plate
.

1
.
Locate
vehicle
speed
sender
electrical
connector
at

back
of
differential
.
Depress
retaininglevers
on
con-
nector
and
remove
.
See
Fig
.
6
.

INSTRUMENTS
620-
3

0013180
Fig
.
6
.



Vehicle
speed
sender
harnessconnector
(A)
and
sender
(B)
.

2
.
Remove
vehicle
speed
sender
retaining
screws
and
re-

move
sender
from
differential
cover
.

3
.
On
installation,
replace
O-ring
and
coat
with
oil
(90W)
.
See
Fig
.
7
.

0011755
NOTE-



'

If
the
speedometer
is
malfunctioning,
check
the
vehicle



Fig
.
7,



O-ring
correctly
installed
on
vehicle
speed
sender,
speed
sensor
hamess
connectoron
the
rear
differen-
tial
.
Water
damage,
frayed
wires
and
corrosion
of
the
connectorcontactsareoftenthecause
ofspeedometer



4
.
Insta¡¡
sender
into
differential
and
tighten
mounting
malfunction
.



bolts
evenly
in
stages
until
the
sender
is
firmly
seated
.

Tightening
Torque

"
Vehicle
speed
sender

to
differential
cover
...
.
.....
6
.6-8
.4
Nm
(53-74
in-lb)

INSTRUMENT
CLUSTER

620-
4
INSTRUMENTS

MULTI-INFORMATION
DISPLAY
(MID)

Severa¡
different
versionsof
the
Multi-Information
Display,

have
been
installed
in
E36
cars
.
The
top-of-the-line
model
is

called
the
Oh-BoardComputer
.
See
Fig
.
8
.

Ambient
temperature/ciock

Check
control/clock

0013028

Fig
.
8
.



Different
versions
of
Multi-Information
Display
(MID)
installed
in
E36
cars
.

Multi-Information
Display,

removing
and
installing

The
Multi-Information
Display
(MID)
is
illuminated
by
bulbs
.

It
mustbe
removed
to
replace
the
bulbs
.
Bulb
replacement
is

included
in
this
procedure
.

1
.
Remove
dashboard
parcel
shelf
.
Reach
under
MID

module
and
pushoutward
.
See
Fig
.
9
.

2
.
Slide
harness
retaining
lever
forward
to
release
MID

from
wiring
harness
.
See
Fig
.
10
.

3
.
To
Rmove
a
faulty
bulb,
use
anarrow
screwdriver
to

turn
bulb
base
45°
counter
clockwíse
.
See
Fig
.
11
.

MULTI-INFORMATIONDISPLAY
(MID)

111

Fig
.
9
.



Removing
the
Multi-Information
Display(MID)
module
.

0012564

Fig
.
10
.
MID
wiring
harness
release
lever
(arrows)
.

Fig
.
11
.
Turn
bulb
base
45°
counterclockwise
.

4
.
Installation
is
reverse
of
removal
.

0012566

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

640-8



HEATING
AND
AIR
CONDITIONING

0012649

Fig
.
22
.
A/
C
control
head
faceplate
screwson
rotary
knob
version
(ar-
rows)
.
Once
screws
are
removed,
faceplate
must
be
un-
clipped
from
control
head
.

Fig
.
23
.
Push
control
panel
out
ofcenter
console
.

4
.
Remove
harness
connectors
.
Unfasten
heater
duct
control
flex-shaft
on
right
side
of
control
head
by
squeezing
retaining
tab
.
PA
shaftout
of
coupling
in
control
head
and
remove
head
.

5
.
Installation
is
reverseof
removal
.

HEATER
AND
CONTROLS

0012650

Heater
and
A/C
control
head,

removing
and
installing(digital-display)

1
.
Remove
Multi-Information
Display
(MID)
module
from

center
of
dash
.
See
620
Instruments
.

2
.
Reach
into
dash
through
MID
opening
and
push
A/C

control
head
outwards
.

3
.
Disconnect
harness
connector
and
remove
control

head
.

4
.
Installation
is
reverse
of
removal

Heater
andA/C
control
module,

removing
and
installing
(rotary-knob)

1
.
Remove
Multi-Information
Display
(MID)
module
from

center
of
dash
.
See
620
Instruments
.

2
.
Remove
center
console
.
See
513
Interior
Trim
.

3
.
Disconnect
wiring
harness
connectors
to
A/C
control

module
in
center
console
and
removemodule
.
See
Fig
.

24
.

0013007
Fig
.
24
.
A/
C
control
module
(A)
in
center
console
.
Arrows
point
to
electrical
harness
connectors
at
A/Cmodule
.

Heater
and
A/C
control
module,

removing
and
installing(digital-display)

TheA/C
control
module
for
cars
with
the
digital
display
is
mounted
on
the
back
of
the
control
head
.
See
Fig
.
25
.

1
.
Remove
control
head
as
described
earlier
and
place
onan
anti-static
mat
.

640-10



HEATING
AND
AIR
CONDITIONING

i

El
Radio

Antenna

Rear



.
,



si,-
Left
side



I
d

1
.
Rear
vents
2
.
Fresh
air
3
.
Face-level
vents
4
.
Recirculation
5
.
Footwell
vents
0013017

Fig
.
28
.
Location
oflate
production
air
distribution
motors
in
heater
box(shown
in
rear,
side
and
top
views)
.

Heater
andA/C
air
distribution
motor,

replacing
(rotary-knob)

1
.
Toaccess
left
side
motors
(dash
vent
mixing
or
recircu-

lation
flap),
remove
lower
dash
panel
and
knee
bolster

on
driver
side
.
See
513
Interior
Trim
.

2
.
To
access
right
side
motor
(fresh
air
flap),
remove
glove

compartment
.
See513
Interior
Trim
.

3
.
Each
motor
can
be
removed
after
its
electrical
wiring

harness
connector
has
been
removed
.
Squeeze
plastic

clip
to
release
motor
.
See
Fig
.
29
.

Fig
.
29
.
A/
C
air
distribution
motor
plastic
retaíning
clip
(arrow)
.
Re-
lease
clip
and
tilt
motor
out
of
housing
.

Rear
Window
Defogger

0011877

The
rear
window
defogger
switch
is
integrated
with
the
heating
andA/C
control
head
.

HEATER
AND
CONTROLS

Fig
.
30
.
Wiring
diagram
of
rear
window
defogger
and
radio
antenna
.

Rear
Window
Blower
(Convertible
Models)

A
blower
fan,
fitted
into
the
rear
seatback,
defogs
therear

window
.
It
will
only
operate
with
the
engine
nunning
and
the

top
raised
.
A
microswitch
behindthe
rear
seats
provides
the

signal
that
thetop
is
raised
.

To
access
the
blower
fan
motor,
it
is
necessary
to
remove

four
screwsfrom
the
center
seat
back
.
Remove
the
wiring
har-

ness
connector
and
motor
mounting
boits,
then
remove
motor

by
pulling
it
down
and
forward
.
See
Fig
.
31
.

ri

Suppressor
filter

1
0013005

Fig
.
31
.
Rear
window
blower
in
center
of
rear
seat
back
(arrow)
.

The
electric
rear
window
defogger
is
integrated
with
the
ra-

dio
antenna
.
See
Fig
.
30
.



y



/f



0013014

To
access
the
rear
window
blower
relay,
remove
the
glove
compariment
.
See
Fig
.
32
.

Fig
.
32
.
Rear
window
blower
relay
located
in
frontof
glove
compart-
ment
(arrow)
.

AIR
CONDITIONING

Thissection
covers
removal
and
installation
of
air
condition-

ing
refrigerant
components
.
A/C
testing
and
diagnosis,
refrig-

erantdischarge,
evacuatíon
and
recharge
are
not
covered

here
.

The
subassemblies
and
lines
of
the
air
conditionerare
filled

with
either
refrigerant
R12
(1992
cars)
or
R-134a
(1993
and

later
cars)
.
The
major
components
of
the
A/Csystem
are

shown
in
Fig
.
33
.

A/CSystem
Warnings
and
Cautions

WARNING
-

"
Always
be
careful
that
refrigerant
does
not
come
in
contact
with
your
skin
.
Always
wearhand
andeye
protection
(gloves
and
goggles)
when
work-

ing
around
the
AIC
system
.
If
refrigerant
does
come
in
contact
with
your
skin
oreyes
:
-Do
not
rub
skin
oreyes
;

-Immediately
flush
skin
oreyes
withcool
water
for
15
minutes
;
-Rush
to
a
doctor
orhospital
;
-Do
not
attempt
to
treat
yourself
.

"
Work
in
a
wefl
ventilated
area
.
Avoid
breathing
re-
frigerant
vapors
.
Exposure
may
irrítate
eyes,

nose,
and
throat
.
Switch
on
exhaustlventilation
systems
when
working
on
the
refrigerant
system
.

"
Do
not
expose
any
component
of
the
AIC
system
to
high
temperatures
(Above
80°Cl176°F)or

open
flames
.
Excessive
heat
will
cause
a
pres-

sureincrease
whichcould
burst
the
system
.

HEATING
AND
AIR
CONDITIONING



640-
1
1

0013015

WARNING
-

"
Keep
refrigerant
away
from
open
llames
.
Poison-
ous
gas
will
be
produced
if
it
bums
.
Do
not
smoke
near
refrigerant
gases
for
the
same
reason
.

"
The
AICsystem
is
filled
with
refrigerant
gas
which
is
under
pressure
.
Pressurized
refrigerant
in
the
presenceof
oxygen
may
forma
combusti-
ble
mixture
.
Never
introduce
compressed
air
finto
any
refrigerant
container
(full
or
empty),
capped
off
AIC
component,
or
piece
of
service
equip-
ment
.

"
Refrígerant
gases
are
heavier
than
air,
displace
oxygen
and
may
cause
suffocation
in
areas
of
poor
círculation,
for
example
under
a
car
.
Switch
on
exhaustlventilation
systems
when
working
on
the
refrigerant
system
.

"
State
and
local
governments
may
have
additional
requirements
regarding
air
conditioning
servic-
ing
.
Alwayscomply
with
state
and
local
laws
.

"
Electric
welding
near
refrigerant
hoses
causes
R-134a
to
decompose
.
Discharge
system
before
welding
.

CA
UTION
-

-As
of
January
1,
1992,
any
person
who
services
a
motor
vehicle
air
conditioner
must,
by
law,
be
properly
trained
and
certified,
and
use
approved
refrigerant
recycling
equipment
.
Technicians
must
complete
an
EPA-approved
recycling
course
to
be
certified
.

"
It
is
recommended
that
al¡
system
refrigerant
AIC
refrigerant
be
left
to
an
authorized
BMW
dealer
or
other
qualified
AIC
service
facility
.

"
Do
not
top
off
a
partially
charged
refrigerant
sys-
tem
.
Dischargesystem,evacuate
and
then
re-
charge
system
.

"
R-134a
and
R-12
refrigerants
and
refrigerant
oils
and
system
components,
including
hoses
and
sealing
O-rings,
are
NOT
compatible
.
Compo-
nent
damage
andlor
system
contamination
will

result
.

"
The
mixture
of
refrigerant
oil
(PAG
oil)
and
refrig-
erant
R-134a
attacks
some
metals
and
alloys
(for
example,copper)
and
breaks
down
certain
hose
materials
.
Use
only
hoses
and
lines
that
are
iden-
tified
with
a
green
mark
(stripe)
or
the
lettering
R-
134a"
.

"
Immediately
plug
open
connections
on
AIC
com-
ponents
to
prevent
dirt
and
moisture
contamina-
tion
.

"
Do
not
steam
clean
condensers
or
evaporators
.

Use
only
cold
water
or
compressed
air
.

AIR
CONDITIONING