1993 BMW 318i 1996 E36 Owner's Guide

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

610-22



ELECTRICAL
COMPONENT
LOCATIONS

Fuses
31-46

Ylililll

milililil
Fuses
21-30
Fuse
positions
1-46
in
front
Power
distribution
box

Table
c
.
1993
E36
Fuse
Positions

fuse



1
Rating



j
Protected
Circuit

1
I



30A
I
Powersunroof

2
I



I
Not
used

Fuses
1-20

3
1



30A
1
Headlight
washer

4
1



15A
1
Heated
seats
(see
also
fuse
23)

5
1



30A
1
Power
seats
(see
also
fuse
40)

0013034

6
1



20A
1
Rear
window
defogger
(see
also
fuse
23)

5A
1
Central
locking
(ZVM)
(see
also
f
use
35,
43)

8



15A



Anti-theft
(Alpine)
(seealsofuse
43)
Horn
9
1



20A
1
Sound
system
(seealsofuse
44)

10



1



30A
1
ABS
(see
alsofuse
21,
27,
38,
46)

11



7.5A



Headlights/foglights
(see
also
fuse
12,15,23,25,29,
30)
On-Board
Computer
(see
also
fuse
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
(seealsofuse
11,
23,27,31,33,
37,
45,
46)

13
I



5A
I
Not
used

14
1



30A
1
Powerwindows
(see
also
fuse
33)

15



5A



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

16



5A
~
Engine
control
module
(see
also
f
use28)
Heating
and
A/C
(IHKR
E36)(see
also
fuse
20,
23,31,
37,39,
41)

17
I



I
Notused
18
1



15A
1
Fuel
pump

19
I



15A
I
Notused
20



30A
~
Heating
and
A/C
(IHKR
E36)(see
also
fuse
16,
23,
31,37,39,
41)
Park
ventilation

FUSE
POSITION
TABLES

Tablec
.
1993
E36
Fuse
Positions

fuse



Rating



Protected
Circuit

21



1



5A
1



ABS
(seealsofuse
10,27,38,
46)

22



5A
~
Instrument
illumination
(seealsoPuse
25,
33,
37)
Park/taillights
(see
alsofuse
33,37)

23



5A



Multi-function
clock
(see
also
fuse
27,
31,
45,46)
Headlights/foglights
(see
also
f
use
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
(seealsofuse
27,31,46)
On-Board
Computer
(see
also
fuse
11,
12,
27,
31,33,
37,45,46)
Rear
window
defogger
(see
also
fuse
6)
Turn
signals/hazard
lights
(seealso
f
use
34)

24
I



10A
I
Power
mirrors

25



5A



Headlights/foglights
(see
also
fuse
11,12,15,23,
29,
30)
Instrument
illumination
(seealso
fuse
22,33,
37)
26



10A
~
Back-up
lights
Electronic
transmission
control
(A4S
310R)
(see
also
f
use
28,
46)

27



5A



ABS
(see
also
f
use
10,21,
38,46)
Multi4unctionclock
(see
also
f
use
23,31,45,
46)
Instrument
cluster
(seealsofuse
23,31,
46)
On-Board
Computer
(see
also
fuse
11,12,
23,
31,33,37,
45,
46)

28



5A



Cruise
control
(see
alsofuse
46)
Engine
control
module
(see
also
fuse
16)
Starting
system
Electronic
transmission
control
(A4S
310R)
(see
alsofuse
26,46)

29



7
.5A



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

30



7.5A



Headlights/foglights
(seealso
fuse
11,
12,
15,23,
25)

31



5A



Multi-function
clock
(seealsofuse
23,
27,
45,
46)
Heating
and
A/C
(IHKR
E36)(see
also
fuse
16,
20,23,
37,39,
41)
Instrument
cluster
(seealsofuse
23,
27,46)
On-Board
Computer
(see
also
f
use
11,12,23,
27,33,
37,45,
46)

32



30A



Glove
compariment
light/cassette
compartment/ashtray
light/charging
socket/cigar
lighter
(seealsofuse
33,
37,
44)

Table
c
.
1993
E36
Fuse
Positions



Table
c
.
1993
E36
Fuse
Positions

fuse



1
Rating



1
Protected
Circuit

33



10A



Cellular
telephone
(see
also
fuse
43)
Glove
compartment
IighUcassette
compartment/ashtray
light/charging
socket/cigar
lighter
(seealsofuse
32,37,
44)
Interior
lights
(also
see
fuse
43)
License
plate/luggage
compartment
lights
(seealsofuse
37)
Instrument
illumination
(see
also
fuse
22,
25,37)
On-BoardComputer
(seealso
f
use
11,
12,23,27,31,
37,
45,
46)
Park/taillights
(seealso
fuse
22,
37)
Powerwindows
(see
also
f
use
14)

34



15A



Crash
control
module
Turn
signals/hazard
lights
(seealsofuse
23)

35



1



25A
1



Central
locking
(ZVM
II)
(seealso
fuse
7,
43)

36
1



30A
1
Wiper/washer
(see
alsofuse
37,
44,
45)

37



10A



Glove
compartment
light/cassette
compartmenUashtray
IighUcharging
socket/cigar
lighter
(see
also
fuse
32,33,44)
Heating
and
A/C
(IHKR
E36)(see
alsofuse
16,20,23,
31,
39,
41)
Instrument
illumination
(seealso
fuse
22,25,33)
License
plate/luggage
compartment
lights
(seealsofuse
33)
On-BoardComputer
(seealsofuse
11,12,
23,
27,31,
33,
45,
46)
Park/taillights
(see
also
fuse
22,
33)
Wiper/washer
(seealsofuse
36,
44,
45)

38
1



30A
1
ABS
(seealso
f
use
10,21,27,
46)

39



7
.5A



Heating
and
A/C
(IHKR
E36)(see
alsofuse
16,20,23,
31,
37,
41)

40
1



30A
1
Power
seats
(see
also
fuse
5)
41



30A
~
Heating
and
A/C
(IHKR
E36)(see
alsofuse
16,20,23,
31,
37,
39)
Radiator
auxiliary
fan

42
1



7.5A
1
Airbag
(SRS)
(seealsofuse
43)

43



5A



Anti-theft
system
(Alpíne)
(seealsofuse
8)
Airbag
(SRS)
(seealsofuse
42)
Cellular
telephone
(see
also
fuse
33)
Central
locking
(ZVM
II)
(seealso
f
use
7,
35)
Interiorlights
(also
see
fuse
33)

44



15A



Glove
compartment
IighUcassette
compartment/ashtray
IighUcharging
sockeUcigar
lighter
(seealsofuse
32,33,
37)
Sound
system
(see
alsofuse9)
Wiper/washer
(see
also
fuse
36,
37,
45)

45



7
.5A



Multi-function
clock
(seealso
fuse
23,
27,
31,
46)
On-BoardComputer
(see
also
f
use
11,12,23,27,31,33,37,
46)
Wiper/washer
(see
also
fuse
36,37,
44)

ELECTRICAL
COMPONENT
LOCATIONS



610-23

fuse



Rating



Protected
Circuit

46



15A



ABS
(see
alsofuse
10,
21,27,38)
Brake
lights
Multi-function
clock
(seealso
fuse
23,
27,
31,
45)
Cruise
control
(see
also
fuse
28)
Electronic
transmission
control
(A4S
310R)
(see
also
fuse
26,
28)
Instrument
cluster
(see
alsofuse
23,27,
31)
On-BoardComputer
(see
also
f
use
11,
12,
23,
27,31,33,37,
45)

WARNING
-

Fuse
designations
and
locations
are
subject
to
change,
and
may
vary
from
car
tocar,
depending
on
options
.
Ifquestionsarise,
pleaserememberthatan
authorized
BMW
dealer
is
the
best
source
for
the
most
accurate
and
up-to-date
information
.

FOSE
POSITION
TABLES

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

721
Airbag
System
(SRS)

Airbag
Systems
.......
.
...
.
.
.
.
.
....
.
.
.
.
721-1

AIRBAG
SENSORS
AND
ELECTRONICS
721-2

SRS
Warning
Light
and
Fault
Display
.
.
.
.
.
..
721-2

Airbagcontact
ring,
replacing
........
.
.
.
.
.
721-3

Airbag
crash
sensor,replacing
..
.
....
.
...
.
721-4

ZAE
control
module,
replacing
.
.
.
.........
721-5

GENERAL

This
repair
group
covers
only
removal
and
installation
of
air-
bag
components
.
Airbag
system
repair
and
fault
diagnosis
is
not
covered
here
.
Diagnostics,
component
testing,
and
airbag
system
repair
should
be
carried
out
by
trained
BMW
service
technicians
.

NOTE-

Special
test
equipment
is
required
to
retrieve
SRS
fault
codes,
diagnose
system
faults,
and
resetltum
off
the
SRS
indicator
light
.
The
SRS
indicator
light
will
remain
on
until
any
problem
has
been
corrected
and
the
fault
memory
has
been
cleared
.

When
servicing
cars
equipped
with
SRS,
the
precautions

on
this
page
mustbeobserved
to
prevent
personal
injury
.

Airbag
Systems

The
airbag
system
installed
on
E36
cars
through
the
1993
model
year
consisted
of
a
single
airbag
in
the
steering
wheel
.
This
systemcan
be
identified
by
the
orange
crash
sensors
lo-
cated
on
the
front
wheel
wells
and
the
absence
of
a
passenger
side
airbag
.

The
ZAE
airbag
system,
starting
in
model
year
1994
(pro-
duction
date9/93
and
later),
provides
both
a
driver
side
and
a
passenger
sideairbag
.
On
ZAE
vehicles,
the
crash
sensorsare
integrated
into
the
airbag
control
module,
located
under
thecenter
of
the
rear
seat
.
The
ZAE
control
module
triggers

deployment
of
the
airbags
When
it
sensos
the
vehicle
deceler-
ating
at
a
rate
equivalent
to
a
head-on
collisionof
at
least
13
mph
(18
km/h)
.

In
some
1997
4-door
models
and
all
1998
models,
side-impact
airbags
were
installed
in
the
front
doors
.
The
airbag
units
are

mounted
behindthe
door
trim
panels
.
Caution
mustbeused

when
working
on
vehicle
systems
in
the
proximity
of
air
bags,
such
as
the
steering
column,
the
dashboard,
or
the
doors
.

AIRBAG
SYSTEM
(SRS)



721-1

GENERAL
.
.
.
.
.
.
.
.
.
.
.......
.
......
.
.
.
.
721-1



Front
side-impact
airbag
crash
sensor,
removing
and
installing
....
.
.....
.
.....
.
721-5

AIRBAGS



..............
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
721-5

Driver
side
airbag,
removing
and
installing
.
.
.
721-5

Passenger
side
airbag,

removing
and
installing
..............
.
.
.721-6

Front
side-impact
airbag,
removing
and
installing
.
.
.
.
.
.
.
.
.
.
......
.721-7

WARNING
-

"
Airbag(s)
are
inflated
byan
explosive
device
.
Handled
improperly
or
without
adequate
safe-
guards,
the
System
can
be
very
dangerous
.
Spe-
cial
precautions
must
be
observed
prior
to
any
work
ator
near
the
driverside
airbag,
the
passen-
ger
side
airbag
(where
applicable)
or
the
side-im-
pact
airbags
(where
applicable)
.

"
The
airbag
is
a
vehicle
safety
system
.
Serious
in-
jury
may
result
if
System
service
is
attempted
by
persons
unfamiliar
with
the
BMW
SRS
and
its
ap-
proved
service
procedures
.
BMW
advises
that
all
inspection
and
service
be
performed
by
an
autho-
rized
BMW
dealer
.

"
Always
disconnect
the
battery
and
cover
the
neg-
ative
()
battery
terminal
with
an
insulator
before
startingdiagnostic,
troubleshooting
or
service
worknot
associated
with
SRS,
and
before
doing
any
welding
on
the
car
.

"
If
an
airbag
has
been
activated
due
to
an
acci-dent,
BMW
specifies
that
SRS
components
be
replaced
.
For
more
information
on
post-collision
SRS
service,
see
an
authorized
BMW
dealer
.

"
Do
not
allow
the
airbag
unit
to
come
in
contact
with
cleaning
solutions
orgrease
.
Never
subject
an
airbag
unit
to
temperatures
aboye
212°F
(100°C)
.
When
reconnecting
the
battery,
no
per-
son
should
be
inside
the
vehicle
.

"
Always
place
an
airbag
unitthat
has
been
re-
moved
from
its
packaging
with
the
padded
sidefacing
upward
.
Do
not
leave
an
airbag
unlt
unat-
tended
.

"
!f
the
airbag
unit
or
airbag
control
modulehas
been
dropped
froma
height
of
!
1
2
meter
(1
Y2
ft.)
ormore,
theairbag
unit
should
not
be
installed
.

Aírbag
system
components
are
shown
in
Fig
.
1.

GENERAL

721-2



AIRBAG
SYSTEM
(SRS)

Fig
.
1
.



Airbag
system
components
.

AIRBAG
SENSORSAND
ELECTRONICS

CA
UTION-

"
If
an
airbag
is
activated,
the
following
compo-
nents
must
be
replaced
:
Airbag
with
contact
ring
;
-Pyrotechnic
seat
belt
tensioners
(if
fitted)
;
-SRS
Control
module
;
-Impact
sensors
;
All
airbags
which
did
not
deploy
.

"
Consult
your
BMW
dealer
for
parts
and
service
information
.

TheE36
airbag
system
consists
of
the
following
compo-

nents
:
crash
sensors
(in
earlycars,
through
1993),
an
elec-

tronic
control/monitoring
module
(with
integrated
crash

sensor
in
ZAE
systems),
an
indicator
light
in
the
instrument
panel,
and
inflatable
airbags
equipped
with
gas
generators
in

the
steering
wheel
and
in
the
passenger
side
of
the
instrument

panel
(ZAE
systems)
.

Some
1997
and
al¡
1998
carsalso
have
side-impact
airbags

in
the
front
doors
.

AIRBAG
SENSORS
AND
ELECTRONICS

1.
Crash
sensors
(through
1993)



wheel
2
.



SRS
control
module
in
front
of



5
.



Side-impact
airbags
(1997/98)
glove
compartment
(through



6
.
ZAE
control
module
under
rear
1993)



seat
(from
1994)
3
.



Passenger
side
airbag
unit
in



7
.
Side-impact
airbag
crash
sensors
dashboard
(ZAE
system)



in
door
silis
(1997/98)
4
.



Driver
side
airbag
unitin
steering



8
.



Knee
bolsters

In
addition
to
the
airbags,
the
vehicles
are
equipped
wíth

knee
bolsters
for
extra
protection
.

SRS
Warning
Light
and
Fault
Display

The
airbag
system
utilizes
a
self-diagnostic
control
module

to
detect
and
store
system
faults
.
If
a
fault
is
detected,
the

SRS
indicator
in
the
instrument
cluster
comes
on
and
stays

on
.

When
the
ignition
key
is
tumed
on,
the
indicator
light
will
illu-

minate
for
approximately
4-6
seconds
.
The
illuminated
light

indicates
the
self-testof
the
electronic
control/monitoring

module,
the
ignítors
and
crash-sensorcircuits,
and
the
system

wiring
.
The
airbag
system
should
be
inspected
byan
autho-

rized
BMW
dealer
if
the
indicator
light
does
not
come
on,
ifit

does
not
go
out
in
approximately
4-6
seconds
after
switching

onthe
ignition,
or
if
the
light
comes
on
during
driving
.
If
the

system
has
detected
a
fault,
the
light
will
come
on
and
stay
on
.

1
.
Disconnect
negative
(-)
cable
from
battery
and
cover

negative
terminal
with
insulating
material
.

CA
UTION-

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

2
.
Remove
driver
sideairbag
from
steering
wheel
.
See

Driver
side
airbag,
removing
and
installing
in
this

repair
group
.

3
.
With
wheels
facing
straight
ahead
and
steering
wheel

centered,
remove
steering
wheel
.
See320
Steering
and
Wheel
Alignment
.

4
.
Remove
contact
ring
cover
(flat
plastic
ring
containing

warning
text)
from
steering
wheel,
íf
applicable
.

5
.
Disconnect
ground
wire,
if
applicable

6
.
Lift
out
plastic
lock
from
steering
wheel,
if
applicable
.

See
Fig
.
2
.

0011903

Fig
.
2
.



Airbag
contact
ring
lock(arrow)
.
Pry
out
lock
and
remove
spríng
from
behind
lock
.
Some
airbag
steering
wheels
are
not
equipped
with
contact
ring
lock
.

WARNING
-

"
The
contact
ring
lock
holds
the
contact
ring
in
the
centered
position
.
Once
the
lock
is
removed,
the
contact
ring
is
free
to
rotate
.
Do
not
allow
the
con-

tact
ring
to
rotate
once
the
lock
is
removed
.

"
If
the
contact
ring
is
accidentally
rotated
outof
center,
turn
the
ring
either
fully
clockwise
orcoun-
terclockwise,
then
turn
in
the
opposite
direction
3
complete
revolutions
until
the
alignment
arrow
canbe
seen
through
the
lock
opening
.

AIRBAG
SYSTEM
(SRS)



721-
3

Airbagcontact
ring,
replacing



7
.
Remove
mounting
nutsor
screws
from
contact
ring
.

See
Fig
.
3
.
Disconnect
wire
lead(s)
andremove
contact

The
airbag
contact
ring
is
mounted
to
the
rear
of
the
steer-



ring
from
rear
of
steering
wheel
.

ing
wheel
and
is
made
up
of
a
wireribbon
that
cofs
and
un-

coils
as
the
steering
wheel
is
tumed
.
The
contact
ring
assures
continuous
electrical
contact
to
the
driver
side
airbag
unit
.

Fig
.
3
.



Airbag
contact
ring
mounting
fasteners(arrows)
.

8
.
Installation
is
reverse
ofremoval,noting
the
following
:

"
Coat
horn
slip
ring
(electrical
contact
ring)
with
CRC
®
copper
paste
before
installing
steering
wheel
.

"
Press
on
lower
lock
until
it
ís
fully
engaged
.

"
When
installing
contact
ringlock,
make
sure
lock

spring
engages
pins
on
lock
and
lock
cover
.

"
Special
instructions
apply
when
installing
airbag

equipped
steering
wheel
.
See320
Steering
and

Wheel
Alignment
.

Early
cars
(through
1993)
:

"
Route
wiring
lead
for
horn
through
squareopening
in

steering
wheel
.

"
When
installing
a
new
contact
ring
from
BMW,
remove

locking
screw
after
installing
the
contact
ringto
steer-

ing
wheel
.
See
Fig
.
4
.

"
Lock
contact
ring
mounting
fasteners
in
place
using

lacquer
paint
or
varnish
.

0011904

Fig
.
4
.



Airbag
contact
ring
locking
screw
(arrow),
as
installed
on
new

replacement
part
from
BMW
(early
production
cars)
.

AIRBAG
SENSORS
AND
ELECTRONICS

721-
4



AIRBAG
SYSTEM
(SRS)

CAUTION-

A
new
contact
ring
is
held
in
center
position
with
a
screw
.
This
locking
device
must
be
removed
after
contact
ring
is
installed
on
steering
wheel
.
See
Fig
.
4
.

Latercars
(1994
on)
:

"
Connect
ground
lead
at
contact
ring
.
"
When
installing
a
new
contact
ring
from
BMW,
remove

locking
pin
after
installing
contact
ring
to
steering
wheel
.

See
Fig
.
5
.

Airbag
crash
sensor,
replacing

Fig
.
5
.



Airbag
contact
ring
locking
pin
(arrows),
as
installed
on
new
replacement
part
from
BMW
(later
production
cars)
.
Contact
ring
mountíng
screws
shown
at
A
.

CAUTION-

Anew
contact
ring
is
held
in
center
position
with
a
screw
or
pin
.
This
locking
device
mustbe
removed
after
contact
ring
is
installed
on
steering
wheel
.
See
Fig
.
5
.

The
airbag
system
in
cars
produced
through
1993
uses
two
crash
sensors
mounted
in
the
engine
compartment
on
the
left
and
right
wheel
arches
.
The
sensors
are
identified
by
their
or-
ange
color
.

WARNING
-

If
en
airbag
is
deployed,
both
sensors
must
be
re-
placed
.

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

CAUTION-

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

AIRBAG
SENSORS
AND
ELECTRONICS

2
.
Remove
lower
steering
column
trim
mounting
screw
and
remove
lower
trim
.
See
Fig
.
6
.

Fig
.
6
.



Lower
steering
column
retaining
screw
(arrow)
.

3
.
Remove
orange
SRS
connector
from
its
holder
and
carefully
separate
connector
.
See
Fig
.
7
.

Fig
.
7
.



Orange
SRS
connector
below
steering
column
(arrow)
.

4
.
Working
in
engine
compartment,
remove
anti-tamper
Torx
screwsfrom
crash
sensor
.
Remove
sensor
and
disconnect
harness
connector
.
See
Fig
.
8
.

5
.
Installation
is
reverse
of
removal
.
Make
sure
arrow
on
sensor
faces
forward
when
installing
sensor
.

WARNING
-

Once
the
airbag
unit
is
installed
and
all
other
ser-vice
procedures
have
been
completed,
start
the
en-
gine
and
check
that
the
SRS
warning
light
goes
out
.
If
the
warning
light
stays
on,the
SRS
system
will
not
function
as
designed
.
Have
the
system
diagnosed
and
repaired
byen
authorized
BMW
dealer
.

0012543

0011891

Fig
.
8
.



Airbag
crash
sensor
mountingscrews
(arrows)
on
early
cars
.
Note
Torx
screws
with
anti-tamper
pin
in
screw-head
.

ZAE
control
module,
replacing

NOTE-

Some
versions
of
early
ZAE
control
modules
are
no
longer
available
from
BMW
.
When
replacing
control
modules
on
cars
built
between
September
1993
and
June
1994,
consulta
BMW
parts
department
for
the
lat-
est
information
on
retrofitting
the
later
module
.
3
.
Remove
orange
SRS
connector
from
its
holder
and
carefully
separate
connector
.
Refer
to
Fig
.
7
.
1
.
Disconnect
negative
(-)
cable
from
battery
and
cover

negative
terminalwith
insulating
material
.



4
.
Working
behind
steering
wheel,
completely
loosen
Torx

screws
(T30)
while
holdingairbag
in
place
.
See
Fig
.
9
.
2
.
Lift
rearseat
cushion
.
Unplug
harness
connectors
and



Support
airbag
unit
toprevent
it
from
falling
out
.
remove
ZAE
airbag
control
module,
which
is
bolted
to

top
of
driveshaft
tunnel
.

3
.
Installation
is
reverse
of
removal
.

Front
side-impact
airbag
crash
sensor,

removing
and
installing

1
.
Disconnect
negative
(-)
cable
from
battery
and
cover

negative
terminal
with
insulating
material
.

2
.
Remove
front
seat
.
See520
Seats
.

3
.
Convertible
:
remove
rear
seat

4
.
Remove
plastic
door
sill
trim
.

5
.
Fold
up
carpet
in
back
of
front
seat
.

6
.
Pull
off
connector
from
crash
sensor,
which
is
located

under
rugnext
to
door
si¡¡
.

7
.
Remove
sensorby
removing
screws
.
Note
direction
ar-

row
before
removing
sensor
.

8
.
Installation
is
reverse
of
removal,noting
direction
arrow

on
sensor
.

AIRBAGS

AIRBAG
SYSTEM
(SRS)



721-
5

Driver
side
airbag,

removing
and
installing

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

WARNING
-

On
cars
with
ZAE
system
:
If
theairbag
system
has
detected
a
fault
(SRS
indicator
illuminated),
a
wait-
ing
period
ofat
least
ten
minutes
must
be
observed
before
removing
the
airbag
from
the
steering
wheel
.
This
will
allow
the
system
capacitor
to
discharge,
re-
ducing
the
possibility
of
a
trigger
pulsebeinggener-
ated
to
the
airbag
.

CAUTION-

Prior
to
disconnecting
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
on
page
vi¡¡
.

2
.
Remove
lower
steering
column
trim
mounting
screw

andremove
lower
trim
.
Refer
to
Fig
.
6
.

Fig
.
9
.



Driver
sideairbag
unit
mounting
screws
(arrows)
.

0011893

AIRBAGS

ELE--2
ELECTRICAL
WIRING
DIAGRAMS

FUSE
LINK

64766

I-i



I
-
i



a
1



I
_
ZJ
I



I



I



I



I



I.
4



2
GRN/VIO
I_I



!
___I



I_I



1
D>



6
END
INECONTROL



ENGINECONTROL



TRANSMISSION
CONTROL



DATALINK
MODULE



MODULE
RELAY



MODULE
(EGS)



CONNECTOR



I



I
I



I

5

(F18



--_______________________________________________



O19~
N
RIBUON
BOX
I
FUSE



II
15A
o~___________________________________________________Q~____-aft

TO
FUSE
F5



C



RED
(DIAGRAM
6
OF
7)

FUELPUMP



I



(DIAGRAM60F7)



C'



RED



\



L------r>
(DIAGRAM60F7)

I
LOW



F



I
FRONT



HIGH
BEAM



FOGJ
BEAM
I



I
LIGHT



I



I
LIGHT



I
j
/



I
LIGHT
RELAY



I



RELAY



li



SJ
RELAY

1992

1993W/TRUNK
MOUNTEDBATTERV

1993W/ENGINE
COMPARTMENTMOUNTEDBATTERV

1993W/TRUNK



1993W/ENGINE



1992



1992



WI
ENGINE



W/TRUNK

BATTERY



MOUNTEDBATTERV



¢)



MOUNTED
BATTERY



MOUN
O
TEDBATT
I
ERV



¢I¢I



MOUNTEDBATTERV

TOFUSEF40
<
,.k
RED
(DIAGRAM
6
OF
7)



I



I



(DIAGRAM
3
OF
7)
TO
FUSEF3



E



RED
(DIAGRAMfiOF7)



"
.
1k
I



(DIAGRAM
6OF7)

>I
mJ~CANADA

RED
BNUMPSTART
JUNCTION
POINT
REO

Power
Distribution

1992-93
318i
Only
(1
of
7)

-UNCTION
POINT

TOFUSEF15



TO
FUSE
F29
(DIAGRAM60F7)
(OIAGRAM6OF7)

I
~1
.
FUEL


_I



I
_I
~
(PUMP



GENERATOR



STARTER
I
,(



I
RELAY

TO
IGNITION
SWITCH
QA

TOFUSE
F20

TOFUSEF19
FRED
(DIAGRAM6OF7)



`
I



III



-
(DIAGRAM70F7)

OXVGENSENSOR
RELAY
(4CVL)

RED
RED

RED

ON-BOARD
LEFTPOWERRIGHTPOWERLEFTPOWER
TOFUSEF17



COMPUTERHORN



WINDOWMODULE



WINDOWMODULE



WINDOW
MODULE
(DIAGRAM
60F
7)



RELAY

TO
COMFORTRELAV