Ventilation BMW 318i 1996 E36 User Guide
Page 410 of 759
610-24
ELECTRICAL
COMPONENT
LOCATIONS
Fuses
31-46
v
-
-----------
Fuses
21-30
Fuses1-20
Fuse
positions
1-46
infront
power
distribution
box
Tabled
.
1994
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
(seealsofuse
23)
5
30A
Power
seats
(seealso
f
use
40)
6
20A
Rear
window
defogger/blower(see
also
f
use
23)
7
$A
Central
body
electronics
(ZKE
IV)
(convertible
only)
(see
also
fuse
33,
43)
Central
locking
(seealso
fuse
35,
43)
Convertible
roof
(seealsofuse
35,43)
Rol¡-over
protection
(seealso
f
use
35,
42,
43)
8
I
15A
I
Horn
9
(
20A
1
Sound
system
(see
also
fuse
44)
10
I
30A
ABS
(see
also
fuse
21,38,
46)
AST
(seealso
f
use
21,
38)
11
7
.5A
Headlights/foglights
(see
also
fuse
12,15,23,25,29,
30)
On-Board
Computer
(see
alsofuse
12,23,27,31,33,37,
45,46)
12
7.5A
Headlights/foglights
(see
also
fuse
11,15,23,25,29,
30)
On-Board
Computer
(see
alsofuse
11,23,
27,
31,33,37,
45,46)
13
I
5A
I
Not
used
14
1
30A
1
Front
power
windows
0013034
15
15A
Headlights/foglights
(see
also
fuse
11,12,
23,
25,29,
30)
FOSE
POSITION
TABLES
Table
d
.
1994
E36
Fuse
Positions
fuse
1
Rating
1
Protected
Circuit
16
5A
~
Engine
control
module
(see
also
f
use
28)
Heating
andA/C
(IHKR
E36)(see
alsofuse
20,
23,
31,37,
39,41)
17
I
10A
I
Not
used
18
1
15A
1
Fuel
pump
19
1
30A
1
Rear
power
windows
20
30A
Blowermotor
Heating
and
A/C
(IHKR
E36)
(see
also
fuse
16,23,31,
37,39,41)
Park
ventilation
21
5A
ABS
(seealsofuse
10,38,
46)
AST
(see
also
fuse
10,
38)
22
5A
Instrument
illumination
(see
also
f
use
25,
37)
Park/taillights
(see
also
fuse
33,
37)
23
5A
Headlights/foglights
(see
alsofuse
11,12,15,25,
29,30)
Heated
seats
(seealsofuse
4)
Heating
andA/C
(IHKR
E36)(see
alsofuse
16,20,31,
37,
39,
41)
Instrument
cluster
(see
also
f
use
27,31,
46)
On-Board
Computer
(see
also
f
use
11,
12,
27,
31,
33,37,
45,
46)
Rear
window
defogger/blower
(see
alsofuse
6)
Turn
signais/hazard
lights
(see
alsofuse
34)
24
I
10A
I
Power
mirrors
25
5A
~
Headlights/foglights
(see
also
fuse
11,12,15,23,
29,30)
Instrument
illumination
(see
also
fuse
22,
37)
26
10A
~
Back-up
lights
Electronic
transmission
control
(A4S
310R)
(seealso
f
use
26,
46)
27
5A
~
Instrument
cluster
(see
also
fuse
23,
31,46)
On-BoardComputer
(see
also
f
use
11,12,23,31,
33,37,
45,
46)
28
5A
Cruise
control
(see
also
fuse
46)
Engine
control
module
(see
alsofuse
16)
Starting
system
Electronic
transmission
control
(A4S
310R)
(seealsofuse
26,46)
29
7
.5A
Headlights/foglights
(seealsofuse
11,12,15,23,
25,30)
30
7.5A
Headlights/foglights
(seealsofuse
11,12,15,23,
25)
31
5A
Multi-function
clock
Heating
andA/C
(IHKR
E36)(see
alsofuse
16,20,
23,
37,39,
41)
Instrument
cluster
(see
also
fuse
23,27,46)
On-Board
Computer
(see
also
fuse
11,
12,
23,27,
33,
37,45,
46)
32
1
30A
1
Cigar
lighterlashtray
lights
Page 412 of 759
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)
Page 414 of 759
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)
Page 416 of 759
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)
Page 451 of 759
Fig
.
12
.
Mounting
bolt
for
A/C
refrigerant
line
flange
(arrow)
.
001Suu7
Fig
.
13
.
A/
C
control
module
(A)
behind
center
console
.
Arrows
pointto
electrical
harness
connectors
to
be
disconnected
.
CAUTION
-
Replace
heater
and
AIC
flange
O-rings
and
tight-
en
fasteners
to
specified
torques
.
0012644
HEATING
AND
AIR
CONDITIONING
640-5
Fig
.
14
.
Heating
and
ventilation
ducts
on
left
side
of
heater
box
(arrows)
.
Right
side
ducts
are
similar
.
Fig
.
15
.
Heater
box
retaining
bracket
in
center
console
(arrow)
.
0012645
10
.
Unclip
andremove
heating
and
ventilation
ducts
on
Tightening
Torques
sides
of
heater
box
.
See
Fig
.
14
.
"
A/C
refrigerant
lines
flange
to
bulkhead
..............
.
..
..
.
3
.5
Nm
(31
in-lb)
11
.
Remove
heater
box
retaining
bracket
on
center
tunnel
"
Water
hose
flange
to
bulkhead
and
remove
heater
box
.
See
Fig
.
15
.
(M6
nut)
................
.
...
..
3
.5
Nm
(31
in-lb)
"
Heater
box
retaining
bracket
12
.
Installation
is
reverse
of
removal
.
Evacuate
and
re-
to
tunnel
................
.
..
..
.
4
.5
Nm
(40
in-lb)
charge
A/C
system
using
specialized
equipment
.
Fill
and
bleed
cooling
system
.
See
170
Radiator
and
Cooling
System
.
HEATER
AND
CONTROLS
Page 457 of 759
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
Page 463 of 759
CAUTION
-
Always
replace
O-rings
when
reconnecting
refrig-
erant
fines
.
9
.
Before
recharging,
evacuate
system
for
at
least
30
min
.
Recharge
system
following
equipment
manufacturer's
instructions
.
See
Table
d
.
A/C
System
Refrigerant
Capacities
.
A/C
evaporator,
removing
and
installing
1
.
Followingmanufacturer's
instructions,
connectanap-proved
refrigerant
recovery/recycling/recharging
unit
to
A/C
system
and
discharge
system
.
2
.
Remove
complete
heater
boxas
described
earlier
.
3
.
Remove
expansion
valve
as
described
earlier
.
4
.
Unfasten
evaporator
sensor
electrical
harness
connec-
tor
and
puli
out
sensor
from
ieft
side
of
heater
box
.
See
Fig
.
50
.
Fig
.
49
.
Pull
out
evaporator
sensor
from
housing
in
direction
of
arrow
.
5
.
Remove
rear
heater
box
cover
.
6
.
Remove
clips
retaining
lower
evaporator
housingcover
.
Tilt
outheater
core,
then
pull
evaporator
out
of
housing
.
7
.
Installation
is
reverse
of
removal
.
CAUTION
-
Always
reptace
O-rings
when
reconnecting
refrtg-
erant
fines
.
8
.
Before
recharging,
evacuate
system
for
at
least
30
min
.
Recharge
system
following
equipment
manufacturer's
instructions
.
See
Table
d
.
A/C
System
Refrigerant
Capacities
.
HEATING
AND
AIR
CONDITIONING
640-17
8
.
Installation
is
reverse
of
removal
.
A/C
evaporator
temperature
sensor,
replacing
ou12b46
The
evaporator
temperature
sensor
is
mounted
in
the
left
(driver)
side
of
theheater
box
behind
thecenter
console
.
1
.
Remove
lower
dash
panel
and
knee
boister
on
driver
side
.
See
513
Interior
Trim
.
2
.
Remove
left
footwell
ventilation
duct
byremoving
re-
taining
rivet
in
bottom
of
duct
.
Pull
it
down
and
away
from
heater
box
.
See
Fig
.
50
.
Fig
.
50
.
Left
footwellventilatíon
duct
(arrow)
.
0o1300ba
3
.
Disconnect
sensor
electrical
connector
from
heater
box
.
Pull
sensor
straight
out
of
heater
box
.
Refer
to
Fig
.
49
.
4
.
Installation
is
reverse
of
removal
.
Table
c
.
lists
evapo-
rator
temperature
sensor
test
values
.
Tablec
.
Evaporator
Temperature
Sensor
Test
Values
Test
temp
.
Resistance
23°F
(-5°C)
11
.4
-11
.9
k
ohms
32°F
(0°C)
8
.8
-
9
.2
k
ohms
41
°F
(5°C)
6
.8
-
7
.2
k
ohms
50°F
(10°C)
5
.3-5
.6
k
ohms
59
°
F
(15°C)
4
.2
-4
.5
k
ohms
68°F
(20°C)
3
.3
-
3
.6
k
ohms
77°F
(25°C)
2
.6-2
.9
k
ohms
86°F
(30°C)
2
.1
-
2
.3
k
ohms
95°F
(35°C)
1
.7
-1
.9
k
ohms
AIR
CONDITIONING
Page 464 of 759
640-18
HEATING
AND
AIR
CONDITIONING
A/C
microfilter,
replacing
1
.
Remove
glove
compartment
.
See
513
Interior
Trim
.
2
.
Remove
right
footwell
ventilation
duct
.
See
Fig
.
51
.
0012664
Fig
.
51
.
Unfasten
retaining
rivets
from
right
ventilation
duct
(arrows)
.
3
.
Remove
right
side
control
module
carrier
screws
and
tilt
carrier
down
.
See
Fig
.
52
.
Fig
.
52
.
Control
module
carrier
retaining
screws
(arrows)
.
0012666
4
.
Rotate
A/C
microfilter
housing
release
knob
about45°
counterclockwise
and
remove
filter
housing
cover
.
See
Fig
.
53
.
5
.
Remove
microfilter
while
moving
module
harnesses
out
of
the
way
.
6
.
Installation
is
reverse
of
removal
.
AIR
CONDITIONING
Fig
.
53
.
A/
C
microfilter
cover
release
knob
(arrow)
on
passenger
side
ofheater
box
.
Table
d
.
A/CSystem
Fluid
Capacities
(total)
Fluid
I
Quantity
R-12
refrigerant
1200g
t
25
g
(2
.65
Ibsa
0
.05lbs
.)
R-134a
refrigerant
1000
g
±
25
g
(2
.20
Ibs
.t
0
.05lbs
.)
PAG
oil
SP-10
1200
ml
f
20
ml(R12
system)
(6
.8
oz
.
±
0
.7
oz
.)
Nippondeso120mi
Refrigerant
oil
(R1
34a
system)
I
Seiko
Seiki
150m1
Page 485 of 759
GENERAL
This
section
contains
wiring
diagrams
for
1992
through
1998
BMW
3
Series
models
.
WARNING
-
On
cars
equipped
with
airbags,
special
precautions
apply
to
any
electrical
testing
or
repair
.
The
airbag
unit
is
an
explosive
device
and
must
be
handled
with
exterme
care
.
Before
starting
any
work
onan
airbag
equipped
car,
refer
to
the
warnings
and
cau-
tions
in
720
Seatbelts
and
721
Airbag
Systems
(SRS)
.
NOTE-
The
"
gear
position/neutral
safetyswitch
is
also
some-
timesreferred
to
as
the
automatic
transmission
range
switch
.
"
The
EWS
11
system
is
also
sometimes
referred
to
as
the
Driveaway
Protection
System
or
the
electronic
im-
mobilization
system
.
ELECTRICAL
WIRING
DIAGRAMS
ELE-1
Electrical
Wiring
Diagrams
GENERAL
.
.
.
.
.
.
.
.
.
................
.
.
.
ELE-1
Horns
.....
.
.....
.
.
.
....
.
.
.
.
.
...
.
.
ELE-153
Instrument
Panel
.
.
.
.
.
.
..............
ELE-165
ELECTRICAL
WIRING
DIAGRAMS
...
.
.
.
ELE-2
Interior
Lights/Illumination
.............
ELE-211
ABS
..............
.
.
.
.....
.
.....
ELE-117
Lumbar
Control
.
....................
ELE-247
ABS/AST
.............
.
.
.
...
.
.
.
.....
ELE-120
On-Board
Computer
..................
ELE-173
Airbag
(Supplemental
Restraint
System)
..
ELE-140
Park
Ventilation
.
.
.
...........
.
...
.
..
ELE-139
Air
Conditioning
and
Heating
.
.
.
.
.
.
.....
ELE-129
Power
Distribution
......
.
...
.
.
.
.
.
.
.
...
.
ELE-2
Anti-Theft
(Alpine)
..........
.
.
.
...
.
...
ELE-144
Power
Door
Locks
.
.
......
.
.
.
.
.
.
.
.
.
..
ELE-226
Anti-Theft
(EWS
II)
.
........
.
.
.
...
.
...
ELE-150
Power
Mirrors
...
.
.
.
......
.
.
.
.
.
.
.
.
.
..
ELE-241
Body
Computer
Module
.....
.
.....
.
...
ELE-176
Power
Seats
......
.
......
.
.
.
...
.
.
.
..
ELE-243
Charging
System
.
.
................
.
.
.
ELE-67
Power
Sunroof
.
.
.
.
.
.
.
...............
ELE-248
Convertible
Top
.
.
.
.
................
.
.
ELE-253
Power
Windows
.
.
.
.
.
.
.....
.
.........
ELE-231
Cruise
Control
..
.
.
.
...........
.
....
.
.
ELE-112
Radio/Cassette/CD/Speakers
..........
ELE-255
Data
Link
Connector
................
.
.
.
ELE-86
Rear
Window
Defogger
...............
ELE-160
Engine
Cooling
.......
.
.......
.
....
.
.
.
ELE-94
Shift
Interlock
.
.
.
.
.
.
.
.
...............
ELE-110
Engine
Management
...
.
.......
.
....
.
.
.
ELE-70
Starting
....
.
.
.
.
.
...
.
................
ELE-63
Exterior
Lights
........
.
.
.
.
.
.
.
.
.
......
ELE-194
Transmission
Electronics
.
..............
ELE-96
Ground
Distribution
....
.
.
.
.
.
.
.
.
.
.......
ELE-35
Warning
System
:
Chimes
.............
ELE-178
Headlights/Foglights
...
.
.
.
.
.
.
.
.
.
......
ELE-180
Wiper/Washer
.
.....
.
...............
ELE-155
Heated
Seats
........
.
.
.
.
.
.
.
.
.
......
ELE-245
ELECTRICAL
COMPONENT
LOCATIONS
Relayand
fuse
positions,
ground
locations
...........
.
.
.
.
.
.
.
.
.
................
seeRepair
Group
610
CAUTION-
Always
switchthe
ignition
off
and
disconnect
the
negative
(-)
battery
cablebefore
removing
any
electrical
components
.
"
Prior
to
disconnecting
the
battery,
read
the
bat-tery
disconnection
cautions
given
at
the
front
of
this
manual
on
page
viii
.
"
Connect
and
disconnect
ignition
system
wires,
multiple
connectors
and
ignition
test
equipment
leads
only
while
ignition
is
switched
off
.
-Always
switch
a
test
meter
to
the
appropiate
func-
tion
and
range
before
making
test
connections
.
"
All-Season
Traction
(AST)
is
also
referred
to
as
ASC
or
ASC+T
.
GENERAL
Page 491 of 759
ELE
rower
1992-
FROMFRONTPOWEn
REO
DISTRIBUTION
BOX
E
(DIAGRAM
1
&20F7)
FROM
FRONT
POWER
RED
DISTRIBUTION
BOX
D
F=eNT^nOW~^R~
RED
(DIAGRAM1&20F7)
RED
FROM
FRONT
u
~
nm~n
10
20
6
18I
FROM
FRONT
POWER
PED
DISTRIBUTION
BOX
1993
1992
(DIAGRAM/
&20F7)
1993
1892
BLOWER
RELAY
B
6
4
I
-
I
I
I
I
I
I
II
I
I
I
I
I
RIGHTSEAT
LEFTSEAT
HEADLIGHT/
2S
CoNTROLSWITCH
CONTROLSWITCH
FOOLIGHTCLEANING
No
DULE(SPA)
NOTUSED
I
I
(CANADA)
I
I
D
FROMFRONTFOG
RED/YEL
FROMLOWBEAM
YEL
PARK
HEATINGLIGHTRELAY
L
LIGHTRELAY
M
VENTILATION
--
(DIAGRAM/&20F7)
~
--
-
(DIAGRAM/&20F7)
~
RELAY
BOX
1B
g
1
-
-
-
-
--
I
FRONTPOWER
I
DISTRIBUTION
BOX
FUSE
FUSE
FUSE
FUSE
I
F20
F16
F12
F11
30A
-___________________
16A---__---
7
.5_______
7
.5=~
20
10
_
4
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