1993 BMW M3 lock

Front
seat
belt
reel,

removing
and
installing

1
.
On
4-door
models
:
Remove
seat
belt
anchor
bolt
from
front
seat
.
Refer
to
Fig
.
1
.

2
.
On
2-door
models
:
Remove
seat
belt
anchorbar
from
rear
of
door
sill
.
See
Fig
.
4
.

Fig
.
4
.



Two-door
seat
belt
anchor
bar
(arrow)
.

3
.
On
4-door
and
coupe
models
:
Remove
plastic
trim
cov-

er
from
B-pillar
(rear
door
jamb
pillar)
sliding
seat
belt

guide
.
Remove
nut
and
guide
loop
.
See
Fig
.
5
.

4
.
On
4-door
models
:
Starting
at
upper
corners,peel
rub-

ber
door
seals
away
from
B-pillar
trim
.
Remove
trim

from
B-pillar
.

5
.
On
2-door
models
:
Remove
reasside
panel
.
See
411

Doors
.

Fig
.
5
.



B-pillar
seat
belt
guide
nut
trim
(arrow)
.

SEAT
BELTS



720-
3

move
reel
and
seat
belt
.

9
.
Installation
is
reverse
of
removal
.

0012672
ou12a74

Fig
.
6
.



B-pillar
trim
removed
to
show
seat
belt
cross-bracket
bolts
(arrows)
.

8
.
Disconnect
harness
connector
from
reel
assembly
.
Re-
Tightening
Torque

6
.
Remove
two
bolts
holding
cross
bracket
to
B-pillar
.
See



"
Front
seat
belt
to
seat
Fig
.
6
.



(use
thread
locking
compound)
.
....
47
Nm
(35
ft-Ib)

"
Front
seat
belt
guide
loop
7
.
Remove
seat
belt
reel
mounting
boltat
base
ofB-pillar
.



to
B-pillar
sliding
anchor



.
..
.
.
.
....
31
Nm
(23
ft-Ib)

"
Front
seat
beltreeltoB-pillar
..
.
....
48
Nm
(36
ft-Ib)

FRONT
SEAT
BELT
ASSEMBLY

720-
4



SEAT
BELTS

REAR
SEAT
BELT
ASSEMBLY

On
4-door
E36
models,
there
are
two
3-point
shoulder
belts

and
a
center
lap
beltin
back
.
On
2-doormodels,
there
is
no

center
rear
lap-belt
.

In
models
with
the
stationary
rear
seat
back,
the
shoulder

belt
reels
are
bolted
to
themiddle
of
the
parcel
shelf
.
In
modeis

with
fold-down
rearseat
back,
the
shoulder
belt
reels
are
at-

tached
to
the
folding
seat
back
.

The
rearseat
belt
assemblies
are
shown
in
Fig
.
7
.

Fig
.
7
.



Detafs
of
rearseat
belt
assembly
.

Seats
.

REAR
SEA
T
BELT
ASSEMBLY

1
.
Remove
rear
seat
cushion
and
backrest
.
See
520

2
.
Remove
plastictrim
cover
over
shoulder
belt
reels
from
rear
window
shelf
.
See
Fig
.
8
.

3
.
Remove
rear
window
shelf
.
See
Fig
.
9
.

4
.
Unbolt
andremove
shoulder
belt
reels
.

NOTE-

The
shoulder
belt
anchor
belts
also
hold
thecenter
lap-
belt
in
place(where
applicable)
.
Be
sure
to
note
relative
positions
of
metal
belt-end
anchors
in
order
to
reas-
semble
correctly
.

body
next
to
rear
door
frame
.

8
.
Installation
is
reverse
of
removal
.

5
.
Remove
shoulder
belt
anchor
bolt
frombeneath
rear
seat
.



WARNING
-

Alignment
tabs
on
seat
belt
reels
must
be
rein-
stalled
in
their
original
positions

Fig
.
8
.



Remove
rear
shoulder
belt
reel
trim
cover
from
rear
window
shelf
.
Unclip
plastic,
then
slide
off
shoulder
belts
as
shown
by
arrows
.

Rear
seat
belt,
removing
and
installing



Fig
.
9
.
Remove
rear
window
shelf
.
Speaker
grilles
and
third
brake

(fixed
seat
back
modeis)



light
socket
will
have
to
be
removed
.
The
front
of
the
shelf
lifts
offits
clips
(black
arrows)
before
the
shelf
slides
forward
.

6
.
On
4-door
models
:
Unbolt
shoulder
belt
lock
bolt
from

7
.
On
2-door
models
:
Remove
rearside
panel
asde-
scribed
in
411
Doors
.
Unbolt
shoulder
belt
lock
bolt
from
body
nextto
quarter
panel
.

Tightening
Torques

"
Rear
seat
belt
reelbolt,
anchor
bolt,
or
lock
boltto
body
.
.
.....
.
...
...
.
48
Nm
(36
ft-Ib)

Rear
seat
belt,
removing
and
installing

(foid-down
seat
back
modeis)

1
.
Remove
rear
seat
cushion
.
See
520
Seats
.

2
.
Remove
shoulder
belt
anchor
bolt
from
beneath
rear

seat
.

NOTE
-

The
shoulder
belt
anchor
bolts
alsohold
the
center
lap-belt
in
place
(where
applicable)
.
Be
sure
to
note
relative
positions
of
metal
belt-end
anchors
in
order
to
reas-
semble
correctly
.

3
.
On
4-door
models
:
Unbolt
shoulder
belt
lock
bolt
from

body
nextto
rear
door
frame
.

4
.
On
2-door
models
:
Remove
rearside
panel
as
de-

scribed
in
411
Doors
.
Unbolt
shoulder
belt
lock
bolt

from
body
next
to
quarter
panel
.

5
.
Unlock
and
flip
down
folding
rear
seat
backrest
.
Re-

move
trim
plug
from
back
of
cushion
(luggage
compart-

ment
side)
.

6
.
Remove
seat
beltreelbolt
andwasher
.
See
Fig
.
10
.

Fig
.
10
.
Rear
seat
beltreelbolt
(arrow)
.

0012676

7
.
Gently
pry
off
plastic
trim
at
top
of
backrest
and
pull
out

seat
beltreel
from
seat
.

NOTE-

The
seat
beltreel
is
held
snugly
by
the
backrest
cush-
ion
.
Moderate
force
will
be
needed
to
pulí
ít
out
.

8
.
Installation
is
reverse
of
removal
.

Tightening
Torques

"
Rear
seat
beltreel
bolt,
anchor
bolt,

or
lock
boltto
body
...............
48
Nm
(36
ft-Ib)

Center
rear
lap-belt,

removing
and
installing

1
.
Remove
rear
seat
cushion
.
See520
Seats
.

2
.
Remove
shoulder
belt
anchor
bolts
from
beneath
rear

seat
.

3
.
Installation
is
reverse
of
removal
.

SEAT
BELTS



720-
5

NOTE-

The
shoulderbeltanchorbolts
also
hold
the
centerlap-
belt
in
place
.
Be
sure
to
note
relative
positions
of
metal
belt-end
anchors
in
order
to
reassemble
correctly
.

WARNING
-

Alignment
tabs
on
seat
belt
reels
must
be
rein-
stalled
in
their
original
positions
.

Tightening
Torques

"
Lap-belt
reelbolt
or
lock
boltto
body
.
48
Nm
(36
ft-Ib)

REAR
SEATBELT
ASSEMBLY

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

Front
side-impact
airbag,

removing
and
installing

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

negative
terminal
with
insulating
material
.

CA
UTION-



"
Store
the
removed
airbag
unit
with
the
soft
pad
Prior
to
disconnectiog
the
battery,
read
the
battery



facing
up
.
ff
stored
facíng
down,
accidental
de-
disconnection
cautions
given
at
the
front
of
this



ployment
could
propel
it
violently
into
the
air,
manual
on
page
viii
.



causing
injury
.

2
.
Remove
inside
door
panel
as
described
in
411
Doors
.

Remove
vapor
shield
.

3
.
Disconnect
electrical
harness
connectorfrom
door-

mounted
airbag
unit
.
See
Fig
.
12
.

WARNING
-

The
plug
connector
insidethe
door
is
not
marked
in

orange,
unlike
other
SRS
connectors
in
the
car
.

Fig
.
12
.
Front
side-impact
airbag
(inner
door
panel
removed)
.
A
is

electrical
harness
connector
.

AIRBAG
SYSTEM
(SRS)



721-
7

CAUTION-

"
The
electrical
harness
connector
of
the
side-im-
pact
airbag
unit
may
be
either
on
the
sideof
the
unít
or
in
the
back
When
removing
and
installing
the
unit,
pay
attention
to
the
routing
of
the
har-
ness
to
avoid
kinks
orbreaks
in
the
wire
.

4
.
Remove
mounting
screws
andremove
airbag
from

door
.

5
.
Installation
is
reverse
of
removal
.

WARNING
-

The
side-impact
airbag
mounting
screws
must
al-
ways
be
replaced
any
time
they
are
removed
.
Usenew
screws
with
factory-applied
locking
sealer
.

Tightening
Torque

"
Side-impact
airbag
to
door



..
.....
8
.5
Nm
(75
in-lb)

AIRBAGS

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

CAL
WIRING
DIAGF

Power
Di
;

1992-93

~~~A

"'0""0"'0"',

///



°°°
DISTRIBUTION
BOX
o/
(DIAGRAM1820F7)
5-
-
-
-
-
-
-
-
-
-
-
-
-
-



-
--
-
-
-
---
-
-
-
I
IGV
NITfON

3

TOFUSEF16
NGRN



.
(DIAGRAM
4
OF
7)
TOP
.SEF28
0GRN



NOTUSED



W/OEGS
W`EGS
(CIA
40F7)
TOFU
SEF24
P
GRN
(DIAGRAM40F7)



33
>>>>>



O>



>



>
?
"



8



12



15



B

a



a



6CYL
-
f



I
I



I
I



I
I



I
I



I
I
ONLY



I



I



I



I



I



I



I



I



I



I
-



I-_I
I
I
I



I
I



STARTER
STAR
-
TER
RELAY



SRSCONTROL



INSTRUMENT



HORN
RELAY
I
I



I
I



I
J



MODULE



CLUSTER
L-I



I
_
I



I



(EARLY
PRODUCTION)
INSTRUMENT



BLOWER
RELAY



ENGINE
CONTROL
CLUSTER



GDULE
(DME)

4
CYL
ONLY
T



TO
FUSEF45
(DIAGRAM
4
OF
7)
-



U



TO
FUSEF46
(DIAGRAM
40F7)

t7



t7



t7
5fi



3



3



3



3



3



3

I
I



I
II
I
I
I
I
I
I
I
I
I
I



I



I



I



I



I



I



I



I



I



I



I



I



I

ENGINECONTROL
IGNITIONIGNITIONIGNITION
IGNITION
IGNITIONIGNITION
MOOULE(DME)



CO-1



CO
ILk2



CO
ILp3



CO
L
.1



COILkS



CO
L#6
HI
CYL)



IS
CYL)

VIO

23



VIO

26



27
FRONTPOWER
.
I



SE



FUSE



FUSE



I
DISTRIBUTIONBO%
FU

J5______________-_
.-
.__________
A________________16
24



26



2i

3
'



o

1993
ONLY
VIO/W
HT
VIO/WHT
0
1993ONLY
~

0



3



3



3
I



I



I



I



I



I



I



I



;



'
I



I



I



I



I



I



I



I



_
23

>t

5



4

SRSCONTROL



FRONTDOME/



ANTI-THEFT



RIG
!
HT
MAKE
UP



I



I



I



I



I



I



I



I
MODULE



MAP
LIGHT



Co
NTROLMODULE



MIRRORLIGHT



GLOVEBOX



I



I



I



I



I



I



I



I
(LATE



ASSEMBLY



LIGHT



I
-
I



I
-
I



I
-
I



I
-
I
PRODUCTION)
UNLOADER



WIPER/WASHER



RADIO



TWIN
RELAYRELAY



MODULE



MODULE
(CANADA)



(CANADA)

VIO/WHT

0



0



3



3>
>



>



33



1



5



7



B
I



I



I



I



I



I



I



I



I



I



I



I
I



I



I



I



I



I



I



I



I



I



I



I

LEFTMAKEUP



SEATLOAD



TELEPHONE



CENTRALLOCKING



WIPE
/WASHER



WASHERPUMP
MIRROR
LIGHT



ASSEMBLY



TRANSCEIVER



MODULE



MODULE



(USA)
(LATE
PRODUCTION)
64773(USA)