service reset BMW M3 1992 E36 User Guide

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

6
INDEX

Ignition
system
general
information
120-1basictroubleshooting
principies
120-3camshaft
position
(CMP)
sensor
120-
6

camshaft
positíon
(CMP)
sensor,
replacing
(4-cylinder
engine)
120-6camshaft
position
(CMP)
sensor,
replacing
(6-cylinder
engines)
120-7
checking
for
spark
120-3
crankshaftposition/rpm
sensor
120-5
crankshaft
position/rpm
sensor,
testing/replacing
(front
mounted
sensor)
120-6
crankshaft
positíon/rpm
sensor,
testing
(rear
mounted
sensor)
120-6
disabling
ignition
system120-2
ignition
coil,
testing
and
replacing
(4-
cylinder
engines)
120-3
ignition
coil,
testing
and
replacing
(6-
cylinder
engines)
120-4
ignítion
firing
order
120-7
ignition
system
diagnostics
120-3
ignition
system
schematics
120-7
ignition
system
service
120-3knock
sensors,
replacing
120-7warnings
and
cautions
120-2
Inspectíon
I
and
Inspection
II
See
Maintenanceprogram
Instrumentpanel
See
interior
trim
Instruments
general
information
620-1
instrument
cluster,
removinglinstalling
620-1
instrument
cluster,
self-testing
620-1
instrument
cluster
bulbs,
replacing
620-2
multi-information
display
(MID),
620-4
multi-information
display
(MID),
removing/installing
620-4
odometer
coding
plug,
replacing
620-
2
vehicle
speed
sensor,
replacing
620-3
Intake
manifold
4-cylinder
engíne,
removing
113-3
6-cylinder
engine,
removing
113-11
See
alsoCylinder
head
removal
and
installation
Intake
air
temperaturesensor
See
Fuel
injection
Interior
trim
general
information
513-1
center
console,
removing/installing
513-1
dashboard,
removing/installing
513-3
glove
compartment,
removing/
installing
513-2
lower
left
dash
panel,
removing/
installing
513-2

J

Jump
startíng
010-12

K

Knock
sensor
See
Ignition
system
L

Leather
upholstery
See
Maíntenance
program
Leve¡
sender
See
Fuel
pump
Lubrication
system
general
information
119-1
oil
pan,
removing/installing
(4-cylinder
engines)
119-2
oil
pan,
removing/installing
(6-cylinder
engine,
1992models)119-4
oil
pan
119-2
oil
pan,
removing/installing
(6-cylinder
engine,
1993
and
later
models)
119-6
oil
pressure,
checking
119-1
oil
pressure
warningsystem,
testing
119-2
oil
pump
119-8
oil
pump,
removing/installing
(4-cylinder
engine)
119-8
oil
pump,
removing/installing
(6-cylinder
engine)
119-9
troubleshooting
119-1

M

Maíntenance
program
general
information
020-2
accelerator
and
throttle
linkage
020-13
air
filter,
replacing
020-11
automatic
transmission
fluid
020-8
automatic
transmission
service
020-18
battery,
checking
and
cleaning
020-12
battery,
replacing
020-12
BMW
service
indicator
020-2
body
and
hinges,
lubricating
020-19
brake
fluid
020-9
brake
fluid,
replacing
020-17
brake
pad/rotor
wear,
checking
020-17
brake
system,
inspecting
020-17
clutch
fluid,
checking
020-19
cooling
system
service
020-14
drive
axle
joint
boots,
inspecting
020-19
engine
coolant
(anti-freeze)
020-9
engine
drive
belts
020-13
engine
oil,
checking
leve¡
020-9

Maintenance
program
(cont
.)
engine
oil
and
filter,
changing020-9engine
oil
service
020-9
exhaust
system,
inspecting
020-18
exterior
washing020-20
final
drive
gear
oil
020-9
final
drive
oil
level,
checking
020-18
front
suspension
and
steering

linkages,
inspecting
020-18
fuel
filter,
replacing
020-16
fuel
tank
and
fuel
lines,
inspecting
020-19
¡dle
speed
020-12
inspection
I
and
inspection
11
020-2
interior
care020-20
leather
upholstery
and
trim
020-20
maintenance
tables
020-3
manual
transmission
fluid,
checking
and
filling
020-18manual
transmission
fluid
020-8
manual
transmission
service
020-18oxygensensors
020-15
parking
brake,
checking
020-17
polishing
020-20
poly-ribbed
belt,
replacing
020-13
power
steering
fluid
020-9
power
steering
fluid,
checking
leve¡
020-14
rear
suspension,
inspecting
020-18
resetting
service
indicator
020-3
seat
belts
020-20
spark
plugs,
replacing
020-11
special
cleaning
020-20
tires,
checking
inflation
pressure
020-17
tires,
rotating
020-17
v-belt,
replacing
020-13
washing
chassis
020-20waxing020-20
windshield
wiperblade
maintenance
020-19
wheels,
aligníng
020-17
Manual
transmission
See
also
Maintenance
program
See
also
Transmission-general
general
information
230-1
back-up
light
switch,
replacing
230-2
inputshaft
sea¡,
replacing
(transmission
installed)
230-5
output
shaftsea¡,
replacing
(transmission
installed)
230-4
selector
shaft
sea¡,
replacing
(transmission
installed)
230-3
transmission
fluid,
replacing
230-2
transmission
fluidlevel,
checking
230-2
transmission
fluid
service
230-1
transmission
removal
and
installation
230-5
transmission,
removing/installing
230-
6
transmission
service
230-2
Mass
air
flow
sensor
See
Fuel
Injection