1996 BMW 318i Hand
[x] Cancel search: HandPage 477 of 759
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
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 520 of 759
ELE-36
ELECTRICAL
WIRING
DIAGRAMS
64852
70G202
(DIAGRAM
1
OF
5)
BR
BRN
LEFT
RIGHT
ASS
BRAKE
WIPER
WIPER
HAZARD
I
(
WASHER
I
(
WASHER
I
(
RELAY
I
(
FLUID
I
(
MOTOR
I
(
RELAY
I
(
FLASHER
I
(JET
I
(JET
I
I
I
(LEVEL
I
I
I
((CANADA)
I
(
RELAY
I
(
(CANA
HEATER
DA)
I
I
(CANADA)
I
I
I
(
SWITCH
I
HEATE
I
I
I
I
I
J,
s'(
2
B'(
a7
-1993
ONLY
Ground
Distribution
1992-93
(2
of
5)
BLOWER
HIGH
LOW
WIPER(
LEFT
COMFORT
I
(
RELAY
I
(
BEAM
I
(
BEAM
I
(
WASHER
(
)
FRONT
I
(
RELAY
I
I
I
(
LIGHT
I
(
LIGHT
I
(
MODULE
AUXILIARY
I
II
I
I
(
RELAY
(
RELAY
I_
(
(USA)
TURN
I_
_
I
LIGHT
¢
I
-2
-
if
E
a
l
ONLY
CENTRAL
SUNROOF
ONT
LEFT
RIGHT
RIGHT
(
LOCKING
I
(
CONTROL
1--,FP
DOME/
I
(
MAKEUP
I
(
POWER
I
(
WINDOW
I
(
MODULE
I
(
ASSEMBLY
I
(
MAP
I
(
MIRROR
I
(
WINDOW
I
(
RETRACTION
AISSEMBLY
I
_
I
SWITCH
I
-I
MODULE
I
-
I
HANDLE
133
2
1
9
i
CONTRACT
SWITCH(EARLY
I-
LEFT
I
(
INERTIA
I
(
RIGHT
I
(
RIGHT
I-
i
RIGHT
PRODUCTION)
SEAT
SWITCH
MAKEUP
SIDE
DOOR
I
(BELT
I
I
I
(MIRROR
I
(MIRROR
I
(JAMB
SWITCH
I
-I
I
_I
SWITCH
I_
I
I
-I
SWITCH
,7
1Y
1Y
.L
17
LEFT
RIGHT
MIRROR
LEFT
LEFT
I
V
I
EATBACK
I
v
(
SEAT
I
I
v
(
CONTROL
I
(
POWER
I
(
WINDOW
H
I
(
EATER
I
(
BELT
I
(
SWITCH
I
(
WINDOW
I
(
RETRACTION
-
I
I
-I
S
DOOR
WITCH
I
-I
I
-I
MODULE
I
~I
HANDLE
1
CONTRACT
SWITCH
(EARLY
I
I
SEAT
T
I
I
S
ATBACK
RIGHT
-1
I
I
SEDE
I
(
DOOR
PRODUCTION)
I
v
(
CONTROL
I
v
HEATER
I
(
MIRROR
I
v
(
JAMB
I
-(
SWITCH
I
I
-
I
I
I
_
(SWITCH
x1993
-
-(-
ONLY
-1992
ONLY
J
-
L
I
(LEFT
LEFT
RIGHT
LE
T
RIGHT
POWER
I
(
POWER
I
(
POWER
I
(
REAR
I
(
REAR
I
(
WINDOW
I
(
DOOR
DOORWINDOW
I
(
WINDOW
I
II
II
-I
SWITCH
I
-
I
MODULE
I
-I
SWITCH_
I
-I
POWER
POWERWINDOW
I
-I
WINDOW
SWITCH
1
SWITCH
(CONSOLE)
Y
(CONSOLE)
e
Page 530 of 759
ELE-46
ELECTRICAL
WIRING
DIAGRAMS
BODY
REAR
INERTIA
TR
U
NK
PASSENGERS
LEFT
SPATIAL
I
(
ELECTRONICS
I
(
LIGHTS
I
(
SWITCH
I
(
LID
I
PASSENGERS
(
MAKEUP
I
(
SIDE
I
I
FOOTWELL
I
'SOUND
I
(CONTROL
I
(RELAY
I
I
I
(MICRO
i
(MIRROR
I
(MIRROR
I
(LIGHT
I
(SWITCH
I
(MODULE
I
_
I
I
_I
I
-(SWITCH
L-1
SWITCH
I
I
I__
I_
L-1
(ZKEIV)
Y
I
Y
Y
15
RELAY
I
SUNROOF
I
'MODULE
I
'CONTROL
i
I
I
(ASSEMBLY
1996
ONLY
CONVERTIBLE
I
'TOP
I
(STORAGE
I
I
LID
LOCK
-
MOTOR
Ground
Distribution
1996-97
Except
318ti
(2
of
5)
m
FRONT
DRIVERS
PASSENGERS
RIGHT
I
I
DOMELIGHT/
I
(MAKEUP
I
(WINDOW
I
-
1
FIGHT
I
(
MAP
I
I
MAKEUP
I
(
MOTOR
I
(
LIGHT
m
--I
READING
ASSEM
LY
II
_
(SWITCHl
L-1
L-1
1
-1997
1
irl
1
0
:1
1
m
f-
"
-----
t
+----_f-
;----__+-0--
"
_-----0-+---___
"
-
"
--__--+_f-___-1
It
.
.m
I-
ALL1996,
1997328,M3
I
'SCID
EATBACKRS
I
'SEAT
I
(CHANGER
I
(HEATER
I
I
HEATER
II
PASSENGERS
PASSENGER5
I
(DOOR
I
'SEAT
I'
(JAMB
I
(CONTROL
L-1
SWITCH
I
-
(SWITCH
1997
1996
199651997
WIA65
¢I¢I
W/ABS
W/ASC
LEFT
ABS
SLIP
SLIP
ABS
PUMP
RIGHT
I
'FRONT
F-
.
'ELAY
I-
'CONTROL
I
'CONTROL
I(
MOTOR
I(
FRONT
I
(
SPEED
I
(
(1996)
I
(
MODULE
I
(
MODULE
I
(
RELAY
I
(
SPEED
I
SENSOR
I
_
I
`I
-____i
I
_I
L-1
I
-I
(1997318)
5
17
28
41
F
318,328
22
-
318
9
1
19
-
M3
W/ASC
RIGHT
ABS
SLIP
A
.S
LEFT
I
'FRONT
I
'CONTROL
m
I-
'CONTROL
I
(HYDRAULIC
I
'FRONT
I
(
SPEED
I
(
MODULE/
I
(
MODULE
I
(
UNIT
I
(
SPEED
I
(
SENSOR
(
I
UNDRAULIC_
__
I_
_
_-
-
J
I
-
`(
I
'
(
(1997318)
BI
24I
1991
411191
3
29'M2
2z
T
il
3
F
1998
mimimI
ml
ONLY
CRUISE
INSTRUMENT
WIPER/
BODY
THERMOSTAT
TRANSMITTER
'
CONTROL
I
'
CLUSTER
I
'
WASHER
(
(
ELECTRONICS
I
'
(1997)
I
(
MODULE
I
(MODULE
I
I
I
(
MODULE
I
(CONTROL
I
I
I
I
I
-
((CANADA)
I
_(
MODULE
I
V
I
I
_I
2
13
21
24
25
5
OO
(7
O
CRASH
_
WIPER/
ON
BOARD
RISE
I
I
I
I
I
I
I
I
CONTROL
m
WASHER
COMPUTER
CONTROL
I
(
MODULE
I
(
MODULE
I
(
TEMP
I
(
ACCTUUATOR
'
I
I
I
(USAII1)
I
(
SENSOR
I
I
eY
1ST
`
2'(
2r
t
89070
GROUND
I
(
DRIVERS
I
(
MIRROR
I
(
DRIVERS
SIDE
CONTROL
DOOR
I
(
MIRROR
I
(
SWITCH
I
(
HANDLE
I
_I
L-1
I
_
I
SWITCH
DRIVERS
DOOR
I
'
WINDOW
'
LOCK
I
I
MOTOR
I
I
HEATER
I
I
_I
L-1
w
.-
"
--
0
-
---___f-t-----0-t------W-i-----
.
w-
--t
------
G202
'f
`"
ONLY
....
_
.
I
:
I
3
O
Page 532 of 759
ELE-48
ELECTRICAL
WIRING
DIAGRAMS
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Page 542 of 759
ELE-58
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