Motor BMW 325i 1992 E36 Repair Manual

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)

611
Wipers
and
Washers

GENERAL
..
.
.
.
.
.
.
.
.
.
.
.
.
.
.....
.
......
.
611-1



Windshield
wiper
motor,

removing
and
installing
.
...............
.611-8

WIPER
BLADES
.
.
.
.....
.
.
.
.
.
.
...
....
.611-1

Wiper
Blade
Cleaning
Problems
.
.
.
.
.
.
.....
611-1

Wiper
blades,replacing
...
.
.
.
.
.
.
.
.
.
.....
611-1

Wiper
blade
inserts,
replacing
.
.
.
.
.
.
.
.
.....
611-2

Wiper
arms,
removing
and
installing
.
.
.
.....
611-2

WINDSHIELD
WIPER
ASSEMBLY
.
.
.....
611-3

Windshield
wiper
assembly,
removing

and
installing
(4-door
models)
.
.
.
.
.
.
.....
611-3

Windshield
wiper
assembly,
removing

and
installing
(2-door
models)
.
.
.
.
.
.
.....
611-5

GENERAL

This
repair
group
covers
windshield
wiper
and
washer
sys-

tem
repair
information
.
Please
note
that
some
procedures
are

different
for
2-
and
4-door
models
.

The
windshield
wiper/washer
stalk
switch
assembly
is
cov-

ered
in
612
Switches
and
Electrical
Accessories
.
Electrical



NOTE-
wiring
diagrams
and
relays
for
the
wiper/washer
system
are



BMwhas
available
a
special
toollgauge
(BMWspecial
covered
in
Electrical
Wiring
Diagrams
.



tool
no
.
00
9210)
to
align
the
angle
of
the
wiper
arm
to
the
windshield
glass
.

WIPERBLADES

CA
UTION-

Never
turn
on
the
wiper
blades
while
the
hood
is
open
.
Damage
to
the
wiper
system
and
hood
may
occur
.
Toensure
safetyduring
wiper
biade
system
procedures,
remove
the
windshieldwiper
fuse
.
See
610
Electrical
Component
Locations
.

Wiper
Blade
Cleaning
Problems

Common
cleaning
problems
with
thewipers
includestreak-

ing
or
sheeting,
waterdrops
after
wiping,
and
blade
chatter
.

Streaking
is
usually
caused
when
wiper
blades
are
coated

with
road
film
or
car
wash
wax
.
Clean
the
blades
using
soapy

water
.
If
cleaning
does
not
cure
the
problem,
the
blades
should
be
replaced
.
BMW
recommends
replacing
the
wiper

blades
twice
a
year,
before
and
after
the
cold
season
.

WIPERS
AND
WASHERS



611-1

WINDSHIELD
CLEANING
SYSTEM
......
611-9

Windshield
spray
nozzle,

removing
and
installing
.......
.
........
.611-9

Washer
fluid
reservoir,
replacing
.........
.611-9

Windshield
washer
fluid
pump,
replacing
..
.
......
.
........
.611-9

Washer
fluid
level
sensor,
replacing

(models
with
check
control)
.
.
.
.
........
611-10

Wiper
blade
chatter
may
be
caused
by
dirty
or
worn
blades,

or
by
wiper
arms
that
areout
of
alignment
.
Clean
the
blades
and
windshield
as
described
above
.
Adjust
the
wiper
arm
so

that
there
is
even
pressure
along
the
blade,
and
so
that
the

blade
at
rest
is
perpendicular
to
the
windshield
.
If
problems

persist,
theblades
and
wiper
arms
should
be
replaced
.

The
wiper
blades
can
be
renewed
in
one
of
two
ways
:
either

by
replacing
the
complete
blade
or
by
replacing
just
therubber

insert
.

Insert
replacement
is
the
mosteconomicalmethod,
al-

though
overtime
the
wiperblade
itselfwill
become
worn
.
One

ruleof
thumb
wouldbe
to
replace
just
the
inserts
every
second

time
.

Wiper
blades,
replacing

1
.
Pivot
wiper
arm
off
windshield
.

2
.
Position
wiperblade
approximately
perpendicular
to

wiper
arm
.

3
.
Remove
wiperblade
from
wiper
arm
by
depressing
re-

taining
tab
and
sliding
blade
out
of
arm
.
See
Fig
.
1
.

Drops
that
remain
behind
after
wiping
are
usually
caused
by



NOTE-

oil,
road
film,
or
diesel
exhaust
residue
onthe
glass
.
Use
an



Some
wiperblade
versions
may
havetwo
retaining

alcohol
or
ammonia
solution
or
a
non-abrasive
cleaner
(such



tabs
.

a
s
Bon-Ami



to
clean
the
windshield
.

GENERAL

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

Fig
.
9
.



Wiper
shaft
nut
at
cowl
(arrow)
.

Fig
.
10
.
Wiper
assembly
support
bolts
(arrows)
.

0012533
0012535

Fig
.
11
.
Wiper
assembly
electrical
connector
(arrow)
.

0012536

13
.
Push
wiper
arm
shaft
down
into
cowl
area
and
maneu-

ver
wiper
assembly
out
of
cowl
.

WIPERS
AND
WASHERS



611-
5

14
.
Installation
is
reverse
of
removal,noting
the
following
:

"
Install
all
fasteners
finger-tight
first
.

"
Once
installed,
wiper
motor
should
first
be
run
to

parked
position
and
switched
off
.

"
Next,
instaf
wiper
arms
butnotblades
.

"
Close
hood
and
fit
wiper
blades
.

"
Check
all
electrical
harness
fittings
and
sealing
grom-

mets
for
correct
reinstallation
.
Replace
any
wire
ties

cut
off
during
removal
.

Tightening
Torques

"
Wiper
shaft
nut
at
cowl
.............
12
Nm
(9
ft-Ib)

"
Wiper
support
to
wiper
assembly

orto
body
..
..
..
.
...............
10
Nm
(89
in-lb)

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

Windshieldwiper
assembly,
removing
and

installing
(2-door
modeis)

NOTE-

The
wiper
arms
should
be
in
the
parked
position
before
removing
the
wiper
assembly
.
To
avoid
damaging
the
wiper
arms
and
pivots,
donotmanually
sidde
or
force
the
wiper
arm
across
the
windshield
.

1
.
Disconnect
negative
(-)cablefrom
battery
.

CAUTION-

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

"
Use
fendercover
to
protect
windshield
.

2
.
Remove
wiper
arms
as
described
earlier
.

3
.
Place
engine
hood
in
service
position
.
See410
Fend-

ers,
Engine
Hood
.

4
.
Remove
trim
retainers
at
left
and
right
side
and
remove

air
plenum
grill
.
See
Fig
.
12
.

5
.
Remove
screws
retaining
wiring
harness
protective

cover
.
See
Fig
.
13
.

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

harness
and
remove
two
screws
retaining
plenum

housing
.
See
Fig
.
14
.

WINDSHIELD
WIPER
ASSEMBLY

0012531Fig
.
16
.
Engine
control
unit
(ECM)
compartment
cover
screws
(ar-
rows)
.

WIPERS
AND
WASHERS



611-
7

Fig
.
18
.
Wiper
assembly
electrical
plug
(arrow)
.

uu1zbs6

13
.
Cover
inside
edges
of
cowi
panelsheet
metal
with
thick
tape
to
prevent
damaging
it
during
wiper
assembly
re-
moval
.

14
.
Wrap
protective
tape
around
wiper
shaft
on
driver
side
to
prevent
damaging
sheet
metal
during
removal
.

15
.
Push
wiper
arm
shaft
down
into
cowiarea
and
maneu-
ver
wiper
assembly
outof
cowi
.

16
.
Installation
is
reverse
of
removal,
keeping
in
mind
:

"
Install
all
fasteners
finger
tight
first
.

"
Torque
topfasteners
in
sequence
indicated
in
Fig
.
17
.

Then
tighten
wiper
assembly
support
bolts
inside
air

plenum
.
"
Wire
tie
wiper
harness
lo
wiper
assembly
support
in-

side
plenum
.

"
Once
installed
;
wiper
motor
should
first
be
run
to
parked
position
and
switched
off
.

"
Next,
insta¡¡
wiper
arms
butnot
blades
.

"
Close
hood
and
fit
wiper
blades
:

"
Check
all
electrical
harness
fittings
and
sealing
grom-

mets
for
correct
reinstallation
.
Replace
al]
wire
ties
cut

during
removal
.

CAUTION-

The
gaskets
and
sealing
grommets
at
the
ECM
compartment
cover
(passenger
sideof
bulkhead)
must
be
installed
correctly
to
keep
moisture
out
of
critica¡
electrical
componente
.

Fig
.
17
.
Wiper
assembly
mounting
fasteners
(arrows)
.



Tightening
Torques

"
Wiper
shaft
nut
at
cowi
..
.
.
..
.......
12
Nm
(9
ft-Ib)

11
.
Remove
wiper
assembly
support
.
Refer
to
Fig
.
10
.



"
Wiper
support
to
wiper
assembly

or
to
body
.........
...
..........
10
Nm
(89
in-lb)

12
.
Separate
harness
at
bulkhead
connector
.
See
Fig
.
18
.



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

WINDSHIELD
WIPER
ASSEMBLY

611-
8



WIPERS
AND
WASHERS

Windshieldwiper
motor,
removing
and
in-

stalling

1
.
Disconnect
negative
(-)
cable
from
battery
.



8
.
Install
wiper
arm
crank
in
straight
line
with
linkage
.
See

Fig
.
20
.

CA
UTION-

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

"
Use
tendercover
to
protect
windshield
.

2
.
Remove
wiper
assembly
as
described
earlier
.

3
.
Remove
nut
on
wiper
motor
linkage
crank
and
remove

linkage
crank
from
motor
.
See
Fig
.
19
.

0012539

Fig
.
19
.
Wiper
linkage
crank
nut
(arrow)
and
wiper
motor
mounting
bolts
(A)
.

4
.
Unscrew
three
motor
to
assembly
mounting
bolts
and
remove
motor
.
Refer
to
Fig
.
19
.

5
.
Insta¡¡
new
motor
to
wiper
assembly
.
Do
not
insta¡¡

crank
.

6
.
Connect
motor
to
electrical
harness
.
If
necessary,
re-

connect
battery
temporarily
.

WINDSHIELD
WIPER
ASSEMBLY

7
.
Operate
motor,
then
turn
off
switch
.
Motor
will
stop
in

"park"
position
.

NOTE
-

When
installing
wiper
crank
onto
wiper
motor,
bracecrank
with
a
drift
pin
through
the
hole
on
crank
into
hole
onwiper
assembly
.

Fig
.
20
.
Align
wipercrank
with
linkage,
as
illustrated
.

9
.
Remainder
of
installation
is
reverse
of
removal
.

0012538

Tightening
Torques

"
Wiper
motor
to
wiper
assembly
(use
new
bolts)
.
..
..
10
Nm
(89
in-lb)

"
Wiper
motor
crank
to

wipermotor
(M8
nut)
......
..
.
...
.
27
Nm
(20
ft-Ib)

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

640-2



HEATING
AND
AIR
CONDITIONING

3
.
Remove
wiring
harness
retaining
clip
at
bulkhead
.
Re-

move
screws
retaining
wiring
harness
cover
and
pull

cover
forward
.
See
Fig
.
2
.

0012529

Fig
.
2
.
Ming
harness
cover
screws
at
base
ofwindshield
(arrows)
.

4
.
On
passenger
side,
push
aside
wiring
harness
and
re-

move
two
screws
retaining
plenum
housing
.
See
Fig
.
3
.

Fig
.
3
.



Ríghtside
plenum
retaining
screws
(arrows)
.

VU1L535

5
.
On
driverside,
push
aside
wiring
harness
and
remove

screw
retaining
plenum
.
Pull
plenum
up
and
remove
from
engine
bay
.
See
Fig
.
4
.

6
.
Unclip
blower
motor
housing
cover,
disconnect
control

cable,
and
turn
center
retainer
1
/4
turn
to
remove
cover
.
See
Fig
.
5
.

7
.
Disconnect
electrical
connectors
from
blower
motor
.

8
.
Remove
left
upper
section
of
blower
housingby
detach-
ing
spring
clipsat
edge
of
housing
.
See
Fig
.
6
.

HEATER
AND
CONTROLS

Fig
.
4
.



Remove
screw
at
A
and
pull
air
plenumupward
.

0012534

0012636

Fig
.
5
.



Blower
motor
housing
clips
(A)
;
control
cable
(B)
;
and
center
retainer(C)
.

i
[u6,

Fig
.
6
.



Spring
clips
(arrows)
on
driver
sideof
blower
housing
.

9
.
Release
blower
motor
retaining
strap
andremove
blow-
er
motor
and
fans
fromcowl
opening
.

NOTE-

Twist
and
rotate
blowermotor
assembly
to
facilítate
re-
moval
from
opening
.
If
the
blower
motor
is
to
be
rein-stafled,
use
care
not
to
damage
fan
wheels
during
removal
.
ff
the
blower
motor
fs
to
be
replaced,
cut
offfan
wheels
at
center
to
aid
in
removal
.

10
.
Installation
is
reverse
of
removal
.
When
installing
a
re-
placement
blower
motor,
instan
motor
into
cowlarea
before
installing
fan
wheels
.
Blower
motor
test
specifi-

cations
are
listed
in
Table
a
.

NOTE
-

On
replacementblowermotors
from
BMW,
thefan
wheels
come
unattached
to
aid
in
installation
.
Locatearrow
on
blower
motor
and
instan
fan
wheels
atthis
po-
sition
.
Be
sure
color
coolng
matches
.
Retain
fan
wheels
using
the
new
clips
.
See
an
authorized
BMW
parts
de-
partment
for
the
latest
parts
information
.

Table
a
.
Blower
Motor
Test
Values

Testingvoltage



13
VDC

Operating
voltage



9-15
VDC

Max
.
current
consumption
(approx
.)



12
amps

Maximum
speed



3,600-4,000rpm

Axialplay
(max
.
allowable)



1
.0
mm
(0
.04
in
.)

Blower
motor
resistor
pack,
replacing

The
blower
resistor
pack
is
clipped
into
the
upper
left
side
of
theheater
box
.

1
.
Remove
lower
left
dash
trim
panel
.
See513
Interior

Trim
.

2
.
Working
under
left
(driver's)
side
of
dash,
unclip
and

pulí
out
resistor
pack
from
sideof
heater
box
.
Remove

harness
connector
from
resistor
pack
.
See
Fig
.
7
.

3
.
Installation
is
reverse
of
removal
.

Heater
valve,
replacing

The
two-way
heater
valve
is
located
in
the
rear
of
the
engine

compartment
on
the
driver
side
.
The
solenoid
operated
valves

control
the
coolant
flow
through
the
dual-chamber
heater

core
.

1
.
Drain
engine
coolant
.
See
170
Radiator
and
Cooling

System
.

HEATING
AND
AIR
CONDITIONING



640-
3

uuiGO4I

Fig
.
7
.



Blower
fan
resistor
pack
(black
arrow)
and
resistor
pack
re-
ceptacle
(white
arrow)
below
left
sideof
dash
.

WARNING
-

Allow
the
cooling
system
to
cool
before
opening
ordraining
the
cooling
system
.

2
.
Disconnect
hoses
and
harness
connector
at
heater
valve
.
See
Fig
.
8
.

001[ó38b

Fig
.
S
.



Hoses
(A)
and
harnessconnector
(B)
at
heatervalve
.

3
.
Carefully
pull
heater
valve
out
of
rubber
mounting
and

pull
up
and
out
of
engine
compartment
.

4
.
Installation
is
reverse
of
removal
.
Use
new
hose

clamps
.
Inspect
hoses
and
replace
asnecessary
.

HEATER
AND
CONTROLS