1992 BMW 318i 001

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

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

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

721-
6



AIRBAG
SYSTEM
(SRS)

5
.
Carefully
lift
airbag
unit
off
steering
wheel
and
discon-



6
.
Installation
is
reverse
of
removal
.
Tighten
right
side
nect
orange
harness
connector
from
rear
of
airbag
unit
.



screw
on
airbag
first
(as
viewedfrom
driver's
seat),

See
Fig
.
10
.



then
left
side
screw
.

NOTE-



NOTE-

In
some
models,
theairbag
electrical
connection
to
the



If
there
is
no
electrical
harness
connector
between
the
steering
wheel
isvia
aplug
in
back
of
the
airbag
unit
.



airbag
and
the
steering
wheel,
be
sure
to
fit
the
push
There
is
no
wire
harness
to
disconnect
.



in
electrical
plug
in
back
of
the
airbag
finto
the
proper
re-
ceptacle
in
the
steering
wheel
.

Fig
.
10
.
Driver
sideairbag
unit
harness
connector
(arrow)
.

AIRBAGS

WARNING
-

"
Store
the
removed
airbag
unit
with
the
horn
pad
facing
up
.
If
stored
facing
down,
accidental
de-
ployment
couldpropel
it
violently
into
the
air,
causing
injury
.

"
Once
an
airbag
is
removed,
the
car
must
not
be
driven
.

"
Do
not
connect
the
battery
with
the
airbag
dis-
connected
.
A
fault
code
will
be
stored,
setting
off
the
SRS
warning
light
.
Special
tools
are
needed
to
reset
the
fault
memory
.

"
Special
instructions
apply
when
installing
an
air-
bag
equipped
steering
wheel
.
See
320
Steering
and
Wheel
Alignment
.

"
Once
the
airbag
unit
is
installnd
and
all
other
ser-vice
procedureshave
been
completed,
start
the
engíne
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
by
an
authorized
BMW
dealer
.

0013184

Tightening
Torque

"
Airbag
unitto
steering
wheel
........
8
Nm
(71
in-lb)

Passenger
side
airbag,

removing
and
installing

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

2
.
Remove
glove
compartment
.
See
513
Interior
Trim
.

3
.
Lift
cover
from
topof
passenger
sideairbag
on
dash-
board
.
See
Fig
.
11
.

0013108
Fig
.
11
.
After
removing
glove
compartment,
lift
out
passenger
side
air-
bag
cover
.
Note
airbag
mounting
bolts
(A)
and
airbag
electri-
cal
connector
(B)
.

4
.
Remove
passenger
sideairbag
mounting
bolts
.
Dis-
connect
electrical
harness
connector
from
rear
of
air-
bag
unit
and
remove
airbag
.

5
.
Installation
is
reverse
of
removal
.
Make
sure
wiring
har-
ness
is
not
pínched
when
installing
airbag
unit
in
dash-board
.

10437
0

FUSE
LINK
80A

BATTERY

FUSE
LINK
BOA

4
26

-
AUXILIARY
I



FUSE



I
FUSE
BOX
I
(,
F4.
I
I
Z
2CA

27X19564

_RED
RED

_
REDRED
51X
10016

61X
10816

I
-
1



I
-
1
I



I



I



1
_I



LI
CONVERTIBLE
TOPCONTROLMODULE

ELECTRICAL
WIRING
DIAGRAMS
ELE-19

Power
Distribution

1998Except
318ti
(1
of
5)

FUEL
PUMP

161
X111010

FUEL
PUMP

15~X
1DD16
-
FRONT
POWER
I



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