reset BMW 325i 1997 E36 User Guide
[x] Cancel search | Manufacturer: BMW, Model Year: 1997, Model line: 325i, Model: BMW 325i 1997 E36Pages: 759
Page 167 of 759
NOTE-
NOTE-
"
The
Ole
speed
control
valve
signal
can
be
checked
The
intake
manifold
is
held
in
place
with
7
nuts
from
using
a
duty
cycle
meter
(or
dwellmeter)
.
Connect
the
above
and
2
support
bracket
bolts
from
undemeath
.
On
meter
to
the
valve
following
the
manufacturer's
in-
DME
3
.1
cars,
carefully
disconnect
the
idleair
hose
from
structions
.
Turn
on
the
WC
or
create
a
larga
air
leak
theintake
manifold
when
lifting
the
manifold
off
.
For
more
and
check
that
the
meter
reading
reacts
while
the
idle
information,
sea
113
Cylinder
HeadRemovaland
In-
speed
remainssteady
.
stallation
.
"
There
are
some
additional
inputs
to
the
control
mod-
ule
that
affect
idle
speed
(Le
.
throttle
position,
AIC-on
5
.
Disconnect
al¡
necessary
hoses
andremove
idle
speed
signals,
andAIT
Drive
position)
.
Check
these
signals
control
valve
.
if
idle
problems
persist
.
See
Tabla
i
orTable
j
.
Idle
speed
control
valva,
replacing
The
idle
speed
control
valve
is
mounted
beneath
the
intake
manifold
.
Accessing
the
valva
is
best
accomplishedby
first
re-
moving
the
intake
manifold
.
NOTE-
¡tis
recommended
that
the
intake
manifold
gaskets
be
replaced
whenever
the
intake
manifold
is
removed
.
1
.
Remove
top
enginecovers
from
engine
.
See
Fig
.
31
.
FUEL
INJECTION
130-21
6
.
Installation
is
reverse
of
Removal
.
Use
new
gaskets
when
installing
intake
manifold
.
NOTE-
Poor
driveability
may
be
noticed
afterinstalling
a
re-
placement
idle
speed
control
valve
.
After
about
10
min-
utes
of
driving,
the
system
will
adapt
the
base
setting
of
the
valva
and
the
idle
speed
should
retum
to
normal
.
Tightening
Torque
"
Intakemanifold
to
cylinder
head
(M7)
........
..
.
15±2
Nm
(11
ti
ft-Ib)
BOSCH
DME
M5
.2
COMPONENT
REPLACEMENT
On-Board
Diagnostics
11
(OBD
II)
is
incorporated
into
the
Bosch
DME
M5
.2
engine
management
systems
used
on
the
M44
engine
.
OBD
II
is
capable
of
detecting
a
full
range
of
faults
.
When
faults
are
detected,
a
Diagnostic
Trouble
Code
(DTC)
is
stored
in
the
system
ECM
.
The
Check
Engine
warn-
ing
light
will
also
come
on
if
an
emissions-relatad
fault
is
de-
tected
.
The
most
efficient
way
to
diagnose
the
Bosch
OBD
II
sys-
tem
is
by
using
a
specialized
scan
tool
.
The
OBD
II
system
is
capable
of
storing
hundreds
of
faults,
making
diagnostics
with
a
scan
tool
the
only
viable
method
.
Therefore,
system
diag-
nostics
is
not
covered
here
.
Fi
31
.
Remove
to
en
ine
covers
b
in
out
caPs
and
removin
NOTE-
nuts
(A)
9
.
P
g
y
Pry
g
g
"
The
OBD
11
fault
memory
(including
an
iiluminated
Note
14
L-te
at
cover
edge
(arrows)
.
Check
Engine
light)
can
only
be
reset
using
the
spe-
cial
scan
tool
.
Removing
the
connector
from
the
ECM
2
.
Remove
two
hold
down
nuts
from
fuel
injector
wiring
or
disconnecting
the
battery
will
not
arase
the
fault
duct
.
Pry
back
injector
connector
retainers
and
lift
off
memory
.
wiring
duct
.
"
The
16-pin
OBD
Il
diagnostic
connector
is
located
on
the
lower
left
dash
panel
.
Refer
to
Fig
.
1
.
3
.
Disconnect
intake
air
bootfrom
throttle
housing
.
Where
applicable
disconnect
accelerator
cable
and
cruise
"
BMW
special
scan
tool
ora
`generic"OBD
II
scan
tool
control
cable
from
their
brackets
.
must
be
used
to
access
DTCs
.
4
.
Unbolt
intake
manifold
and
move
it
out
of
way
enough
to
access
idle
speed
control
valva
.
"
Tablak
lists
engine
control
module
(ECM)
pinouts
for
the
DMEM5
.2
system
BOSCH
DME
M5
.
2
COMPONENT
REPLACEMENT
Page 169 of 759
001ía4
i
Fig
.
34
.
Intake
air
temperature
(IAT)
sensor
in
top
section
of
air
filter
housing
.
¡die
speed
control
valve,
replacing
side
of
the
throttle
body
.
See
Fig
.
35
.
1
.
Disconnect
harness
connector
from
¡die
valve
.
0012725
Fig
.
35
.
M44
engine
:
Throttle
housing
showing
(A)
throttle
position
sensor
(fPS)
and
(B)
¡die
speed
control
valve
.
2
.
Remove
twomountingscrews
holding
sensor
to
throttle
housing
.
The
¡die
speed
valve
on
the
M44
engine
is
located
on
the
FUEL
INJECTION
130-23
2
.
Disconnect
vacuum
hose
and
retaining
screws
.
3
.
Pull
¡die
speed
control
valve
from
its
fittings
.
4
.
Installation
is
reverse
of
rémoval
.
Always
replace
0-
rings
and
seals
.
NOTE
Poor
driveability
may
be
notíced
after
installing
a
re-
placement
¡dio
control
valve
.
After
about10
minutes
of
driving,
the
idie
speed
should
retum
to
normal
.
SIEMENS
MS
41
.1
COMPONENT
REPLACEMENT
On-Board
Diagnostics
II
(OBD
II)
is
incorporated
into
the
Si-
emens
MS
41
.1
engine
management
systems
used
in
the
M52
and
S52US
engine
.
Refer
to
Fig
.
36
.
OBD
11
is
capable
of
detecting
a
fui¡
range
offaults
.
When
faults
are
detected,
a
Diagnostic
Trouble
Code
(DTC)
is
stored
in
the
system
ECM
.
The
Check
Engine
warning
light
will
also
come
on
if
an
emissions-related
fault
is
detected
.
The
most
efficient
way
to
diagnose
the
Siemens
OBD
II
system
is
by
using
a
specialized
scan
tool
.
The
OBD
II
system
is
capa-
ble
of
storing
hundreds
of
faults,
making
diagnostics
with
a
scan
tool
the
only
viable
method
.
Therefore,
system
diagnos-
tics
is
not
covered
here
.
NOTE
-
"
The
OBD
11
fault
memory
(including
an
illuminated
Check
Engine
light)
can
only
be
reset
using
the
spe-
cial
scan
tool
.
Removing
the
connector
from
the
ECM
or
disconnecting
the
battery
will
not
erase
the
fault
memory
.
"
The
16-pin
OBD
11
diagnostic
connector
is
located
on
the
lower
left
dash
panel
.
Refer
to
Fig
.
1
.
"
BMW
special
scan
tool
ora
"generic"
OBD
11scan
tool
must
be
used
to
access
DTCs
.
3
.
Installation
is
reverse
of
removal
.
No
adjustment
is
nec
essary
.
"
Table
1
lists
engine
control
module
(ECM)
pinouts
forthe
MS
41
.1
systems
.
SIEMENS
MS
41
.
1
COMPONENT
REPLACEMENT
Page 337 of 759
Fig
.
13
.
Lifting
arm
retaining
clips
(arrows)
at
window
slides
.
12
.
Tip
window
so
rear
ofglass
is
up
out
of
door
.
While
sup-
porting
window,
remove
window
front
limit
stopbracket
.
See
Fig
.
14
.
0013067
Fig
.
14
.
With
window
glass
shown
partially
tipped
out
of
door,
remove
bolt
A
and
loosen
bolt
B
in
order
to
remove
front
window
limit
stop
bracket
.
13
.
Take
glass
fully
out
of
door
.
14
.
Installation
is
reverse
of
removal,notingthe
following
:
"
Guide
front
of
window
into
front
guide
rail
and
rest
it
therewhile
installing
front
window
limit
stop
bracket
.
"
When
installing
window
rear
guide
bracket,
tighten
countersunk
screws
in
glass
first
(throughoutside
of
door),
then
install
guide
rail
bracket
.
"
Insert
rubber
sea¡
at
top
of
door
correctly
See
Fig
.
15
.
"
Use
new
mounting
bolts
when
reinstalling
the
side-im-
pactairbag
to
the
door
(where
applicable)
.
Reset
SRS
warning
light
and
clear
SRS
fault
memory
using
spe-
cial
test
equipment
.
See
721
Airbag
System
(SRS)
.
"
Adjust
window
as
described
later
.
"
Re-inítialize
window
regulator
motors
as
described
earlier
.
DOOR
WINDOWS
512-
7
Fig
.
15
.
Correct
installation
of
door
toprubber
seal
.
Tightening
Torques
"
Rear
guide
bracket
to
window
.......
6
Nm
(53
in-lb)
"
Rear
guide
bracket
to
roller
guide
..
.
...
...............
9
Nm
(7
ft-Ib)
Front
door
window,
adjusting
(2-door
modeis)
The
"closewith
door
shut"
feature
of
2-door
cars,
as
well
as
the
frameless
window,
makeswindow
adjustment
critical
:
WARNING
-
"
Some
1997
and
afl
1998
2-door
cars
are
fitted
with
side-impact
airbags
in
the
front
doors
.
When
ser-
vicingthe
door
windows
on
cars
with
front
side-im-
pact
airbags,
always
disconnect
the
negative
(-)
battery
cable
.
See
721Airbag
System
(SRS)
for
cautions
and
procedures
relating
to
the
airbag
sys-
tem
.
"
Adjusting
the
front
window
requires
that
the
bat-
tery
cable
be
reconnected
with
the
side-impact
airbag
disconnected
.
This
will
set
a
fault
code
in
the
SRS
control
module,
turn
on
the
SRS
warning
light,
and
disable
the
SRS
system
until
the
fault
memory
is
cleared
using
special
SRS
test
equip-
ment
.
"
There
is
risk
of
window
glass
breakage
if
correct
adjustment
proceduresare
not
used
.
If
in
doubt,
this
procedureshouldbe
left
to
a
trained
BMW
technician
.
WINDOW
SERVICE,
2-DOOR
MODELS
Page 340 of 759
512-
1
0
DOOR
WINDOWS
0013078
Fig
.
22
.
Move
window
fore/aftatrear
guide
rail
top
mounting
bolts
(ar-
rows)
.
Insertion
Depth
"
A
(See
Fig
.
17
.)
.
..........
.1-1
.5
mm
(0
.04-0
.6
in
.)
6
.
To
set
Insertion
depth
C
(Refer
to
Fig
.
17
.)
:
"
Lower
window
slightly
.
Loosen
stop
at
window
regula-
tor
motor
.
See
Fig
.
23
.
Fig
.
23
.
Window
regulator
stop
(arrow)
.
WINDOW
SERVICE,
2-DOOR
MODELS
0013075
"
Raise
window
.
Loosen
rear
boltat
regulator
support
arm
(5mm
Allen
wrench)
.
See
Fig
.
24
.
Align
window
parallelto
roof
line
by
moving
support
arm
up
or
clown
.
Tighten
arm
bolt
.
"
Lower
window
and
remove
rubber
plugs
at
bottom
of
door
.
If
necessary,temporarily
reconnect
battery
ca-
ble
.
"
Adjust
front
and
rear
limit
stops
so
that
window
retracts
into
window
seal
as
specified
.
See
Fig
.
25
.
"
Raise
window
to
check
adjustment
.
"
Push
regulator
stop
fully
forward
and
tighten
bolt
.
"
Closedoor
and
check
window
operation
.
0013077
Fig
.
24
.
Use
5mm
Afen
socket
to
loosen
mounting
boltat
support
bracket(arrow)
and
slide
bracket
up
or
clown
to
adjust
win-
dow
position
at
roof
line
.
(Allen
bolt
head
faces
outside
of
door
.)
CAUTION
-
"
Recheck
preload
gap
B
(step
4)
.
Excessive
pre-
load
could
cause
window
to
shatter
.
"
The
fully
closed
window
must
not
contact
the
rain
gutter
when
opening
the
door
(in
the
event
the
"close
with
door
shut"
feature
is
faulty
or
the
bat-tery
is
dead)
.
7
.
Usenew
mounting
bolts
when
reinstalling
the
side-im-
pact
airbag
to
the
door
(where
applicable)
.
Reset
SRS
warning
light
and
clear
SRS
fault
memory
using
special
test
equipment
.
See
721
Airbag
System
(SRS)
.
8
.
Replace
door
panel,
rubber
door
plugs
and
outside
doormolding
.
9
.
Re-initialize
window
regulator
motors
as
described
ear-
lier
.
Page 352 of 759
515-4
CENTRAL
LOCKING
AND
ANTI-THEFT
11
.
Installation
is
reverse
of
removal
.
Keep
in
mind
the
fol-
4
.
Remove
screws
mounting
bottom
of
window
rear
track
lowing
:
to
door
.
See
Fig
.
9
.
"
Make
sure
rubber
seal
for
handle
is
correctly
posi-
tionedbefore
tightening
mounting
fasteners
.
"
Install
exteriortrim
piece
and
then
use
a
hooked
tool
to
pull
locking
plate
into
locked
position
.
Make
sure
door
handle
trim
contacts
body
evenly
before
locking
trim
in
place
.
"
Use
new
mounting
bolts
when
reinstalling
the
side-im-
pactairbag
to
the
door(where
applicable)
.
Reset
SRS
warning
light
and
clear
SRS
fault
memory
using
spe-
cial
test
equipment
.
See
721
Airbag
System
(SRS)
.
"
Reconnect
al¡
harness
connectors
(including
power
window
motor)before
installing
door
panel
.
"
Secure
wire
harnesses
withwire
ties
.
"
Adjust
and
reinitialize
windows
.
See
512
Door
Win-
dows
.
Tightening
Torque
"
Collar
nut
to
doorhandle
..........
10
Nm
(89
in-lb)
1.
Remove
rear
door
panel
and
vapor
barrier
as
described
in
411
Doors
.
2
.
Remove
window
from
rear
dooras
described
in
512
Door
Windows
.
3
.
Disconnect
andremove
inside
door
handle
.
See
Fig
.
8
.
0013073
Fig
.
8
.
Inside
door
handle
retaining
screw
(A)
Unhook
linkage
from
handle
at
B
.
DOOR
HANDLES
AND
LOCKS
Fig
.
9
.
Rear
window
track
lower
fasteners
(arrows)
.
Reardoor
lock,
removing
and
installing
5
.
Remove
window
rear
track
top
screw
and
move
track
aside
.
See
Fig
.
10
.
Fig
.
10
.
Rear
window
track
top
screw
(arrow)
.
6
.
Remove
screw
from
lock
button
linkage
rod
retainer
.
Lift
rod
out
of
retaining
clip
.
See
Fig
.
11
.
7
.
Disconnect
door
lock
harnessconnector
.
8
.
Remove
door
lock
screws
.
See
Fig
.
12
.
0013085
9
.
Move
lock
upslightly
to
disengage
from
exterior
handle
linkage
.
Remove
lock
from
inside
door
.
Page 375 of 759
The
left
latch
in
the
fully
automatic
version
hastwo
mi-
croswitches
(S7
and
S8)which
signal
open,
closed
and
latched
states
.
See
Fig
.
8
.
The
length
of
the
dead
center
point
rod
is
critica¡
lo
correct
opening
and
latching
of
the
convertible
top
.
See
Fig
.
9
.
Dead
Center
Point
Rod
"
Dimension
A
........
205
.5
f
1
mm
(8
.09
t0
.04
in)
Visor
Latch
Motor
The
fully
automatic
convertible
top
is
latched
and
unlatched
by
one
electric
motor
installed
in
the
front
roof
bow
.
To
re-
place,
remove
front
cover
trim
from
the
roof
.
Remove
electri-
cal
harness
connectors
from
motor,
andremove
mounting
screws
.
Slide
the
motor
off
the
output
shafts
to
the
left
and
right
latches
.
During
reinstallation,
theoutput
shafts
must
be
tumed
until
the
S8
microswitch
in
the
left
latch
is
tripped
.
Convertible
top
and
frame,
replacing
1
.
Open
convertible
top
partially
.
Open
convertible
top
lid
.
Fig
.
9
.
Preset
lengthof
dead
centerpoint
rod
.
Open
back
windows
.
2
.
Fully
automatic
power
convertible
top
:
Remove
front
cover
trim
from
top
.
Disconnect
electrical
harness
con-
nectors
from
frontlatch
motor
.
Disconnect
connectors
from
S7
and
S8
microswitches
at
left
latch
.
Motors
M1
Convertible
top
M2
Convertible
top
lid
M3Front
latch
(fully
automatic
top)
Microswitches
S1
&S2
In
convertible
top
motor
S3
In
convertible
top
storage
compartment
S4
In
top
linkage
(semi-automatic
only)
S5
In
luggage
compartment
latch
S6
In
right
convertible
top
lid
latch
S7&S8
In
left
conv
.
top
latch
(fully
automatic)
Fig
.
8
.
Locationof
automatic
and
semi-automatic
convertible
latch
mechanisms,
motors
and
microswitches
.
CONVERTIBLE
TOP
541-5
POWER
CONVERTIBLE
TOP
Page 377 of 759
Convertible
top
drive
motor,
replacing
5
.
Working
in
convertible
top
storage
compartment
be-
hind
driver's
seat,
remove
convertible
top
linkage
rods
1
.
Open
convertible
top
partially,
stopping
when
convert-
from
top
of
motor
.
Refer
to
Fig
.
11
.
ible
top
lid
is
fully
upen
.
Remove
lid
.
2
.
Release
luggage
compartment
lock-out
by
pressing
on
microswitch
in
right
convertible
top
lid
latch
.
See
Fig
.
14
.
0012745
Fig
.
14
.
Rightside
convertible
top
lid
latch
.
Arrow
points
to
location
of
luggage
compartment
lock-out
microswitch
.
3
.
Open
luggage
compartment
.
Remove
trim
and
inner
lining
from
left
side
of
compartment
.
4
.
Disconnect
electrical
harness
connectors
at
top
motor
.
Release
emergency
release
cable
from
lever
.
Push
le-
ver
up
to
release
motor
.
See
Fig
.
15
.
uu12759
Fig
.
15
.
Convertible
top
motor
(A)
and
release
lever
(B)
in
luggage
compartment
.
CONVERTIBLE
TOP
541-
7
6
.
Remove
four
fastenersholding
motor
to
body
and
re-
move
motor
through
luggage
compartment
.
See
Fig
.
16
.
0012761
Fig
.
16
.
Convertible
top
motor
mountingscrews
(arrows)
.
Gasket
(A)
mustbe
renewed
when
motor
is
replaced
.
7
.
Installation
is
reverse
of
removal
.
Keep
the
following
in
mind
:
"
Replace
sealing
gasket
between
top
of
motor
and
body
.
"
Securemotormountingscrews
with
Locktite
®
270
or
equivalent
.
Tightening
Torque
"
Convertible
top
motor
to
body
mountingscrews
...
...
.
.
.........
10
Nm
(7
.5
ft-Ib)
Convertible
Top
Emergency
Operation
A
malfunction
in
the
electrical
system
or
another
fault
in
the
convertible
top
mechanism
can
cause
the
automatic
or
semi-
automatic
top
to
be
stuck
in
open,
shut,
or
intermediate
posi-
tion
.
The
following
general
procedures
are
suggested
in
order
to
close
the
top
in
an
emergency
situation
.
Resetting
proce-
dures
for
convertible
top
synchronization
after
emergency
clo-
sure
are
beyond
the
scope
of
this
manual
.
Main
Motor
.
To
release
thetop
linkage
from
the
motor,
lift
the
left
comer
of
the
rearseat
to
access
emergency
release
handle
.
See
Fig
.
17
.
POWER
CONVERTIBLE
TOP
Page 437 of 759
INSTRUMENT
CLUSTER
....
.
.
.
.
.
...
.
..
620-1
Instrument
cluster,
seif-testing
.
.
.......
.
..
620-1
Instrument
cluster,
removing
and
installing
...
620-1
Instrument
cluster
bulbs,
replacing
.
.
.
.
.
.
...
620-2
GENERAL
This
repair
group
covers
removal
and
installation
of
the
in-
strument
cluster
and
the
Multi-information
Display
(MID)
mod-
ule
.
Bulb
replacement
information
for
these
units
is
also
included
here
.
NOTE
-
A
quick
check
of
the
temperature
gauge
and
its
electri-
cal
circuitis
given
in
170
Radiator
and
Cooling
Sys-
tem
.
Use
this
procedure
to
diagnosea
faulty
temperature
gauge
INSTRUMENT
CLUSTER
When
servicing
the
instrument
cluster,
always
disconnect
the
negative
(-)
cable
from
the
battery
and
insulate
the
cable
end
to
prevent
accidental
re-connection
.
Instrument
cluster,
seif-testing
Severa¡
different
versions
of
the
basic
instrument
cluster
havebeen
fitted
in
E36
cars
.
It
is
possibleto
perform
an
instru-
ment
cluster
test
and
display
system
test
information
.
Some
of
the
information
displayed
by
the
instrument
cluster
during
seif-testing
is
used
for
interna¡
BMW
organizationpur-
poses,
suchasmatching
the
correct
instrument
cluster
com-
ponents
during
parts
replacement
.
Other
functions
test
the
various
instrument
modules
.
Self-test
is
also
used
to
recode
the
instrument
cluster
after
removal
.
In
later
production
vehicles
(1996
and
later)
the
test
results
canbe
downioaded,
via
the
diagnostic
plug,
byan
authorized
BMW
dealertechnician
.
1
.
Turn
ignition
to
"radio"position
.
2
.
Press
and
hold
reset
button
on
trip-odometer
untiltrip-
odometer
display
shows
numerical
codes
.
620
Instruments
4
.
Turn
off
ignition
.
Instrument
cluster,
removing
and
installing
INSTRUMENTS
620-1
GENERAL
.....
.
.
.
.
.
.
.
.
.
.........
.
....
620-1
Odometer
coding
plug,
replacing
.....
.
.
.
.
.
.
620-2
Vehicle
speed
sender,
replacing
...
.
.
.
.
.
.
.
.
620-3
MULTI-INFORMATION
DISPLAY
(MID)
.
.
.
620-4
Multi-Information
Display,
removing
and
installing
..
.
....
.
.........
620-4
3
.
With
each
subsequent
press
of
the
button,
a
different
function
is
tested
.
Some
functions
will
activate
need1e
gauges
.
1
.
Disconnect
negative
(-)
cable
from
battery
and
cover
terminal
with
insulating
material
.
CAUTION-
Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautionsgiven
at
the
front
of
this
manual
on
page
vi¡¡
.
2
.
Remove
airbag
unit
from
steering
wheel
.
See
721
Air-
bag
System
(SRS)
.
Store
unit
in
a
safe
place
.
WARNING
-
The
airbag
is
an
explosive
devfce
and
should
be
treated
with
extreme
caution
.
Improper
handling
of
the
airbag
could
cause
serious
injury
or
death
.
Store
the
airbag
with
the
horn
pad
facing
up
.
If
stored
facing
down,
accidental
deployment
couldpropel
it
vfolently
into
the
air,
causing
injury
.
3
.
With
front
wheels
pointed
straight
ahead,
remove
steer-
ing
wheel
.
See
320
Steering
and
Wheel
Alignment
.
4
.
Remove
instrument
cluster
retaining
screws
.
See
Fig
.
1
.
5
.
Place
a
towel
over
steering
column
.
Carefully
tilt
top
of
cluster
out
of
dash
panel
.
Unlock
and
disconnect
har-
ness
connectors
from
back
of
cluster
.
See
Fig
.
2
.
INSTRUMENT
CLUSTER
Page 439 of 759
3
.
Break
open
plastic
retainer
in
back
of
instrument
clus-
ter
andremove
coding
plug
.
See
Fig
.
5
.
5
.
Reset
vehicle
mileage
.
1
ILO
NOTE-
Consultan
authorized
BMW
dealer
service
department
about
resetting
vehicle
mileage
using
the
special
BMW
Service
tester
.
Vehicle
speed
sender,
replacing
0
0013029
Fig
.
5
.
Remove
coding
plug
retainer
with
a
screwdriver
(arrow)
.
4
.
Install
coding
plug
and
new
retainer
.
Reinstall
instru-
ment
cluster
.
The
vehicle
speed
sender
supplies
an
electronic
pulsed
speed
signal
to
the
speedometer
.
The
sender
is
mounted
be-
neath
the
rear
of
the
car,
on
the
differential
cover
plate
.
1
.
Locate
vehicle
speed
sender
electrical
connector
at
back
of
differential
.
Depress
retaininglevers
on
con-
nector
and
remove
.
See
Fig
.
6
.
INSTRUMENTS
620-
3
0013180
Fig
.
6
.
Vehicle
speed
sender
harnessconnector
(A)
and
sender
(B)
.
2
.
Remove
vehicle
speed
sender
retaining
screws
and
re-
move
sender
from
differential
cover
.
3
.
On
installation,
replace
O-ring
and
coat
with
oil
(90W)
.
See
Fig
.
7
.
0011755
NOTE-
'
If
the
speedometer
is
malfunctioning,
check
the
vehicle
Fig
.
7,
O-ring
correctly
installed
on
vehicle
speed
sender,
speed
sensor
hamess
connectoron
the
rear
differen-
tial
.
Water
damage,
frayed
wires
and
corrosion
of
the
connectorcontactsareoftenthecause
ofspeedometer
4
.
Insta¡¡
sender
into
differential
and
tighten
mounting
malfunction
.
bolts
evenly
in
stages
until
the
sender
is
firmly
seated
.
Tightening
Torque
"
Vehicle
speed
sender
to
differential
cover
...
.
.....
6
.6-8
.4
Nm
(53-74
in-lb)
INSTRUMENT
CLUSTER
Page 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