rear BMW 328i 1997 E36 Workshop Manual

541-
6



CONVERTIBLE
TOP

3
.
Remove
headliner,
starting
from
front
and
working



7
.
Remove
fasteners
in
bottom
of
storage
compartments

backward
.
Note
arrangement
and
lacing
of
tensioning



behind
door
posts
and
lift
out
complete
top
.
Note
num

cable
so
it
can
be
reinstalled
in
its
original
configura-



ber
of
shims
on
horizontal
mounting
bolt
.
See
Fig
.
12
.

tion
.
See
Fig
.
10
.

0012748

Fig
.
10
.
Headliner
tensioning
cable
and
some
of
its
retaining
eyelets
(arrows)
.

4
.
Disconnect
electrical
harness
connector
from
S4
mi-

croswitch
in
middle
linkage
of
convertible
top
.

5
.
Disconnect
electric
motor
linkage
rods
in
convertible

top
storage
compartment
behind
left
rearseat
.
See
Fig
.

Vizib1

Fig
.
11
.
Convertible
top
linkage
rods(arrows)
in
compartment
behind
left
rear
seat
.

POWER
CONVERTIBLE
TOP

8
.
Installation
is
reverse
of
removal
.
Be
sure
to
replace
U-

shaped
shims
on
horizontal
mounting
bolts
.
See
Fig
.

13
.

0012754

Fig
.
13
.
Horizontalpositioning
bolt
(A)
and
U-shaped
adjusting
shims
(B)
for
convertible
top
.
One
of
two
main
mounting
nuts
(ar-
rows)
also
visible
.

6
.
Pull
electrical
harness
through
to
disengage
from
top
.



9
.
To
adjust
position
and
fit
oftop,
Rmove
or
add
U-
shaped
shims
until
top
is
properly
aligned
.
Tighten
nuts

and
screws
.

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

541-
8



CONVERTIBLE
TOP

CAUTION-

In
caseof
failure
of
the
automatic
or
semi-auto-
matic
convertible
top
function,
only
use
the
emer-
gency
procedure
to
close
the
top,
never
to
open
it
.
An
authorized
BMW
dealer
should
then
be
con-
sulted
.

0012764

Fig
.
17
.
Convertible
topmotor
emergency
release
handle
under
rear
seat
.
Pull
in
direction
of
arrow
to
release
top
.

It
is
then
possible
to
push
thetop
manually
to
a
near
closed
position
.
In
the
case
of
the
semi-automatic
top,
simply
attach

and
lock
the
front
latches
.

Front
Latches
.
Once
the
fully
automatic
convertible
top
has
been
released
from
the
motor
and
manually
pushed
to
near-closure,
emergency
latchíng
ofthetop
is
possible
by
us-
ing
the
S-shaped
hex
key
provided
in
the
emergency
tool
kit
.

First,
remove
the
plastic
cover
over
the
latch
motor
in
the
front
bow
of
the
convertible
top
.
See
Fig
.
18
.

Next,
use
the
hex
key
from
tool
box
to
crank
the
front
latch-
es
shut
.
See
Fig
.
19
.

Luggage
Compartment
Cover
.
A
microswitch
in
the
right
convertible
top
lid
latch
prevents
the
luggage
compartment
from
being
opened
whilethe
lid
is
up
.
This
lockout
can
be
overridden
by
pressing
on
the
microswitch
.
Refer
toFig
.
14
.

POWER
CONVERTIBLE
TOP

Fig
.
18
.
Remove
plastic
cover
from
center
of
convertible
roof
front

bow
to
access
latching
motor
drive
.

0012762

Fig
.
19
.
Using
emergency
hexkey
to
move
front
part
of
convertible
top
.

CAUTION-

The
convertible
top
lid
and
the
luggage
compart-
ment
cover
interfere
with
each
other
and
cannot
beopen
at
the
same
time
.
To
avoid
damage
to
painted
surfaces,
an
assistant
should
keep
the
lid
down
until
the
luggage
compartment
cover
can
beclosed
.

Convertible
Top
Lid

The
components
of
the
convertible
top
lid
are
shown
in
Fig
.
20
.

Fig
.
20
.
Components
of
the
convertible
top
lid
.

ROLLOVER
PROTECTION
SYSTEM

The
lid
latches
are
cable
operated
by
a
drive
motor
located
in
the
left
sideof
the
luggagecompartment,
behind
the
trim
lin-

er
.
The
same
motor
is
used
to
raise
and
lower
the
lid
during

automatic
convertible
topoperation
.

The
latch
cables
must
be
adjusted
so
that
the
lidfits
snugly
against
the
body
when
locked
.

The
lid
drive
motor
can
be
removed
and
replaced
from
the

luggage
compartment
.

Two
spring-locaed
cassettes
are
mounted
behind
the
rear
seat
.
A
single
rollover
sensor,
mounted
on
the
left
cassette,
signals
the
convertible
top
module
(CVM)
of
animminent
roll-
over,
whereupon
the
module
triggers
both
cassettes
within

3j10th
of
a
second
.
See
Fig
.
21
.

Once
the
cars
ignition
has
been
switched
on,
the
rollover

sensor
performs
a
self-test
lasting
6
seconds
.
During
this
time

a
yellow
warning
light
is
lit
on
the
dashboard
.
If
thewarning
lightfails
to
go
out
after
6
seconds,
this
means
that
a
fault
has

been
detected
in
the
system
.
The
fault
is
stored
in
the
CM

Faults
canbe
retrieved
and
diagnosedby
special
diagnostic

equipment
.

NOTE-

Diagnosis
of
the
convertible
top
and
the
Rollover
Pro-
tection
System
are
beyond
the
scope
of
this
book
.
Your
authorized
BMW
dealer
has
the
proper
diagnostic
equipment
and
tools
to
carry
out
these
tasks
.

CONVERTIBLE
TOP



541-
9

Fig
.
21
.
Construction
of
the
rollover
protection
cassette
.

After
deployment,
thedetent
pawl
in
a
rollover
protection
cassette
can
be
retracted
using
the
special
tool
in
the
tool
kit,
fitted
to
the
screwdriver
handle
.
The
rear
seatheadrest
needs
to
be
raised
for
this
procedure
.

WARNING
-

Ensure
that
the
area
above
and
adjacent
to
the
roll-
over
bars
remains
clear
and
unobstructed
at
all
times
.

CAUTION-

"
Itis
not
possible
to
close
the
convertible
top
with
the
rollover
bars
extended
.

"
If
a
hardtop
is
mounted,
be
sure
to
install
the
pro-
tective
rollover
bar
covers
provided
with
the
hard-
top
to
prevent
damaglng
the
rear
window
in
case
of
deployment
.

0012744

ROLLOVER
PROTECTION
SYSTEM

600
Electrical
System-General

GENERAL
.
...........
.
.
.
.
.
.
.
.
.
...
.
...
600-1

Voltage
and
Polarity
........
.
.
.
.
.
.
.
.....
600-1

Ming,
Fuses
and
Relays
............
.
.
.
.
600-1

Electrical
System
Safety
Precautions
...
.
.
.
.
600-1

Electrical
Test
Equipment
.....
.
.
.
....
.
.
.
.
600-2

WIRING
DIAGRAMS
..
.
.
.
.
.
.
.
.
.
........
600-2

Ming
Codes
and
Abbreviations
..
.
...
.
....
600-2

ELECTRICAL
TROUBLESHOOTING
..
.
..
600-3

Voltage
and
Voltage
Drops
..........
.
.
.
.
.
600-4

GENERAL



Electrical
System
Safety
Precautions

A
brief
description
of
the
principal
parts
of
the
electrical
sys-
tem
is
presented
here
.
Also
covered
here
are
basic
electrical
system
troubleshooting
tips
.

Voltage
and
Polarity

The
vehicle
electrical
system
is
a
12-volt
direct
current
(DC)
negative-ground
system
.
A
voltage
regulator
controls
system
voltage
at
approximately
the
12-volt
rating
of
the
battery
.
Al¡
circuits
are
grounded
by
direct
or
indirect
connection
to
the

negative
(-)
terminal
of
the
battery
.
A
number
of
ground
con-

nections
throughout
the
car
connect
the
wiring
harness
to

chassis
ground
.
These
circuits
are
completedby
the
battery

cable
or
ground
strap
between
the
body
and
the
battery
nega-

tive
(-)
terminal
.

Wiring,
Fuses
and
Relays

Nearly
all
parts
of
the
wiring
harnessconnect
to
compo-

nents
of
the
electrical
system
with
keyed,
push-on
connectors

that
lock
into
place
.
Notable
exceptions
arethe
heavy
battery

cables
and
the
starter
wiring
.
The
wiring
is
color-coded
for
cir-

cuitidentification
.

With
theexception
of
the
battery
charging
system,
most

electrical
power
is
routed
from
the
ignition
switch
or
the
bat-
tery
through
the
main
fuse/relay
panel,
located
in
¡he
left
rear

comer
of
the
engine
compartment
.
Fuses
are
color
coded
to

indicate
current
capacities
.

The
relays
and
control
units/modules
are
mounted
in
vari-

ous
places
throughout
the
vehicle
.
See610
Electrical
Com-

ponent
Locations
.

ELECTRICAL
SYSTEM-GENERAL
600-1

Voltage,
measuring
.
.
.
................
.
.
600-4

Voltage
drop,
testing
.
.
.....
.
.....
.
......
600-4

Continuity,
checking
..
.
...
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
600-5
Short
Circuits
.
.
.
.
.
.
.
.
.....
.
...
.
.
.
.
.
.
.
.
.
600-5

Short
circuit,
testing
with
ohmmete'r
.
.
.
.
.
.
.
.
.
600-6

Short
circuit,
testing
with
voitmeter
.
.
.
.
.
.
.
.
.
600-6

TABLES
a
.
Terminal
and
Circuit
Numbers
..............
..
.600-3
Please
read
the
following
warnings
and
cautions
before
do-
ing
any
work
on
your
electrical
system
.

WARNING
-

"
The
cars
covered
by
this
manual
are
equipped
with
aSupplemental
Restraint
System
(SRS)
that
automatically
deploys
one
or
more
airbags
.
Each
airbag
unit
houses
an
explosive
powerful
charge
.
Any
work
involving
the
SRS
system
should
only
be
performed
byan
authorized
BMW
dealer
.
Making
repairs
without
the
proper
knowledge
and
special
test
equipment
may
cause
serious
per-
sonal
injury
.
See
721
Airbag
System
(SRS)
.

"
The
ignition
system
of
the
car
operates
at
lethal
voltages
.
People
with
pacemakers
or
weak
hearts
should
not
expose
themselves
to
the
ignition
sys-
tem
.
Extra
caution
mustbe
taken
when
working
on
the
ignition
system
or
when
servicing
theen-
gine
while
it
is
runningor
the
key
is
on
.
See
120
Ignition
System
for
additional
ignition
system
warnings
and
cautions
.

"
Before
operating
the
starter
without
starting
the
engine
(as
when
making
a
compressfon
test),
dis-
able
the
ignition
system
as
described
in
120
Igni-
tion
System
.

"
Keep
hands,
clothing
and
other
objects
clear
of
the
electric
radiator
coollng
fan
when
working
on
a
warm
engine
.
The
fan
may
start
at
any
tíme,
even
when
the
ignition
is
switched
off
.

GENERAL

610
Electrical
Component
Locations

GENERAL
...........
.
.
.
.
.
.
.
.
.
........
610-1



FOSE
POSITION
TABLES
..
.
.
.
.
.
.....
.
610-19

FUSE
AND
RELAY
POSITIONS
.
...
.
.
.
.
.
610-1

Fuse
Positions
.
.
.
................
.
.
.
.
.
610-1

Relay
Positions
.
.
.
.....
.
.
.
........
.
.
.
.
.
610-2

Auxiliary
RelayPanel
.....
.
...
.
........
.
610-2

SplicePanel,
Left
.
.
.
...
.
.
.
...
.
........
.
610-2

SplicePanel,
Right
.
.
.
.
.
.
.
.
...
.
.........
610-3

COMPONENT
LOCATIONS
.
.
.
.
.......
.
.610-3

Component
Location
Table
.
.
.
.
.
.
.........
610-9

GENERAL



FUSE
AND
RELAY
POSITIONS

This
repair
group
covers
f
use,
relay,
and
control
module
lo-



The
front
power
distribution
box,
an
auxiliary
relay
panel,cation
information
.
Electrical
equipment
and
accessories
in-



and
two
auxiliary
splice
panels
contain
most
of
the
fuses
and
stalled
varies
depending
on
model
and
model
year
.
Always



relays
in
E36
vehicles
.
Refer
to
the
component
location
later

confirm
that
the
proper
electrical
component
has
been
identi-



in
this
section,
as
well
as
the
tables
at
the
end
of
this
repair

fied
by
using
the
electrical
wiring
diagrams
.



group
for
electrical
component
location
.

WARNING
-

On
cars
equipped
with
airbags,
special
precautionsapply
to
any
electrical
system
testing
orrepair
.
Air-
bag
units
areexplosive
devices
and
mustbe
han-
dled
with
extremecare
.
Before
starting
any
work
onan
airbag
equipped
car,
refer
to
the
wamings
and
cautions
in
721
Airbag
System
(SRS)
.

CAUTION
-

"
Prior
to
disconnectiog
the
battery,
read
the
bat-
tery
disconnection
cautions
given
at
the
front
of
this
manual
on
page
viii
.

"
Relay
and
fuse
positions
are
subject
to
changeand
may
varyfrom
car
to
car
.
If
questions
arise,
an
authorized
BMW
dealer
is
the
best
source
for
the
most
accurate
and
up-to-date
information
.

"
A
good
way
to
verify
a
relay
position
isto
com-
pare
the
wiring
colors
at
the
relay
socket
to
thecolors
indicated
on
the
wiring
diagrams
located
at
the
rear
of
this
manual
.

"
Always
switchthe
ignition
off
and
disconnect
the
negative
(-)
battery
cable
before
removing
any
electrical
components
.

"
Connect
and
disconnect
ignition
system
wires,
multiple
connectors,
and
ignition
test
equipment
leads
only
while
the
ignition
is
switched
off
.

"
Only
usea
digital
multimeter
for
electrical
tests
.

ELECTRICAL
COMPONENT
LOCATIONS



610-1

TABLES
a
.
E36Component
Locations
...........
.
.
..
...
610-10b
.
1992
E36
Fuse
Positions
..........
..
.
.
.....
610-20c
.
1993
E36
Fuse
Positions
..........
..
..
.
....
610-22d
.
1994
E36
Fuse
Positions



.........
...
.......
610-24e
.
1995
E36
Fuse
Positions
.........
...
.......
610-26
f
.



1996
E36
Fuse
Positions



.........
...
.......
610-28g
.
1997-1998
E36
Fuse
Positions
..
.
..
...
.......
610-30

Fuse
Positions

CAUTION
-

"
Replace
fuses
with
those
of
the
same
rating
.
In-
stalling
a
fuse
with
higher
rating
can
lead
to
cir-
cuit
failure
and
may
also
start
a
fire
.

"
Relay/fuse
positions
vary
by
model
and
equip-
ment
.

Fuses
number
1
through
46
are
mounted
in
the
front
power

distribution
box
.
See
Fig
.
1.

Fuses
31-46

~
Illlllllllll

°
-
Ilmmlmomlmoi

Fuses
1-20

(a
1
:1
E
El

~
~O!7

L~~n

4~
i
Fuses
21-30

Fig
.1.



Fuse
positions
1-46
in
front
power
distribution
box
.

0013034

FUSE
AND
RELAY
POSITIONS

610-2



ELECTRICAL
COMPONENT
LOCATIONS

Fuses
number47
and
50are
mounted
on
the
left
side
splice

panel
.
Refer
lo
Fig
.
5
.

Fuse48
is
mounted
on
the
auxiliary
relay
panel
.
Refer
to

Fig
.
3
.

Fuse
49
is
mounted
in
the
right
side
of
the
luggage
compart-

ment
behind
the
trim
cover
.

Relay
Positions

Mounted
in
the
left-hand
rear
comer
of
the
engine
compart-

ment,
the
power
distribution
box
contains
46
(uses
and
15
re-

lay
positions
.
See
Fig
.
2
.

Fuses31-46

-
Er
a
&QT
MM
~

Fig
.
2
.



E36
front
power
distribution
box
.

FUSE
AND
RELAY
POSITIONS

Fuses1-20

13
EL1
5
]

mmmmmmmmmm
Fuses
21-30
--



0013034)

1
.
Fuel
pump
relay



9
.



Heater/A/C
Blower
relay
2
.
System
(main)
relay



10
.



Rear
defogger
relay
3
.
Oxygen
sensorheater
re-



11
.
ABS
system
relay
lay



12
.
ABS
pump
relay
4
.



Horn
relay



13
.



High
speed
radiator
fan
re-
5
.



Taillight/foglight
relay



]ay
6
.
Low
beam
relay



14
.
A/C
compressor
relay
7
.



High
beam
relay



15
.



Low
speed
radiator
fan
re-
8
.



Emergency
flasherrelay



¡ay

Auxiliary
Relay
Panel

The
auxiliary
relay
panel
contains
five
relay
positions
.
In
lat-

er
modeis
an
additional
fuse
holder
(Fuse48)
and
the
EWS
II
(anti-theft)
transmitter/receiver
module
are
located
on
this

panel
.
See
Fig
.
3
.

The
panel
is
located
nextto
the
steering
column
under
the
driver's
side
dashboard
.
To
access
this
panel,
remove
the
pwer
dash
panel
on
driver's
side
.
See513
Interior
Trim
.

Then
remove
the
driver's
side
knee
bolster
.
Lower
the
relay
panel
by
gently
releasing
the
plastic
retainers
.
See
Fig
.
4
.

During
installation,
be
sure
the
retainer
tabs
are
engaged
in
the
relay
panel
.

Splice
Panel,
Left

3

¡ni

Fig
.
3
.
Auxiliary
relay
panel
under
left
side
of
dash
.

Fuse
48)
0013035

1
.



Comfort
relay
(where
ap-



4
.



Not
used

plicable)



5
.



Not
used

2
.
Crash
control
module



6
.



EWS
II
transmitter/receiv-

3
.



Park
ventilation
relay



er
module
(from
Jan
.
1995)

0013164

Fig
.
4
.



Auxiliary
relay
panel
under
left
sideof
dashboard
(arrow)
.

The
left
splice
panel
contains
four
relay
positions
and
an
ad-
ditional
fuse
holder
(Fuses
47
and
50)
.

To
access
the
left
side
electrical
splice
panel,
remove
the

left
side
dash
panel
and
knee
bolster,
as
described
earlier
.

The
panel
is
located
above
and
lo
the
left
of
the
clutch
pedal
.

See
Fig
.
5
.

610-4



ELECTRICAL
COMPONENT
LOCATIONS

--J
L
Windshield
washertank
&
pump

Fig
.
7
.



E36
engine
compartment
layout
.
M42
engine
compartment
shown
.

-,x
0013204

Fig
.
8
.
Control
modules
under
right
sideof
dash
.
Glove
compart-
ment
has
been
removed
.
For
module
identification,
see
Fig
.
9
.

COMPONENT
LOCATIONS

RSP
'I



4

ABS



Main
engine



Power
hydraulic
harness
distribution
control
unit



connector
I



box
oe

1
.
SRS
(Airbag)
control
module
(through
1993)
2
.
ABS/ASC+T
control
module
(as
applicable)
3
.
Central
locking
module
(through
1993)
4
.
Anti-theft
alarm
module
or
ZKE
IV
control
module
(from
1994)5
.
Rear
window
blower
relay
(convertible
models)6
.
Horn
relay
7
.
Wiper/washer
module
8
.
Rear
power
window
relay
(four-door
models)9
.
Luggage
compartment
lid
lock
relay
(convertible)
10
.
Cruise
control
module
EWS
II
control
module
(from
Jan
.
1995)
RSP
:
Right
splice
panel

0013215

Fig
.
9
.



Identificationof
control
modules
under
right
side
of
dash
.
Module
utilízation
varies
byyear
andmodel

1
.
Heater
valves
2
.
ABS
pedal
travel
sensor3
.
ABS
pump

Fig
.
10
.
Left
rear
of
engine
compartment
.

4
.
Main
engineharness
con-
nector
5
.
Power
distribution
box

ELECTRICAL
COMPONENT
LOCATIONS
610-5

0013202
0013226

Fig
.
11
.
M42
engine
idie
speed
control
valve
(arrow)
beneath
intake
manifold

0012421

Fig
.
12
.
M44
engine
intake
air
temperature
(¡Al)
sensor
in
air
filter
housing

Fig
.
13
.
M50/S50U
S
engine
intake
air
temperature
(IAT)
sensor
(1)
and
throttle
position
sensor
(2)
.

301180

0012724

Fig
.
14
.
M52/S52U
S
engine
intake
air
temperature
(IAT)
sensor
in
bot-
tom
of
intake
manifold
(throttle
housing
shown
removed)
.

COMPONENT
LOCATIONS

610-6



ELECTRICAL
COMPONENT
LOCATIONS

Fig
.
15
.
M44
engine
harness
connectors
atair
intake

0011644
Fig
.
16
.
A/
C
recharging
ports
(arrows),
right
rear
of
engine
compart-ment

COMPONENT
LOCATIONS

0012427

811004

Fig
.
17
.
Six-cylinder
ignition
coil
in
top
of
cylinder
head
(M52
engine)
.

Fig
.
18
.
Cooling
fan
dualswitch
in
radiator
(arrow)
.

0013203