X20 BMW 318i 1992 E36 Workshop Manual

increased
power
output
and
road-handling
demands
.

The
steering
geometry
is
modified
by
changing
the
cast-

er/camber
angles
slightly
.
This
is
accomplishedby
reposition-

ing
the
upper
strut
mounting
holes
in
the
frontstrut
towers
and

through
different
front
and
rear
control
arms
.

M3
Brake
System
Improvements

"
Vented
directionalfront
rotors
:
315
mm
dia
.
x
28
mm
thick
.

"
Vented
directional
rear

rotors
:
312
mm
dia
.
x20
mm
thick
.

"
Larger
brake
pads
and
calipers
.

"
Modified
Teves
ABS
system
.

SUSPENSION,
STEERING
AND
BRAKES-GENERAL



300-
7

M3
SUSPENSION
AND
BRAKES



NOTE-

M3
brake
rotors
are
directional,
having
a
different
part

TheE36
M3
was
introduced
in
late
1994
as
a
1995
model
.



number
for
each
side
.
Rotors
with
an
odd
part
number

The
design
of
the
M3
suspension,
steering
and
brakes
is
a



go
on
the
left
while
rotors
with
en
even
part
numbergo

modification
of
existing
E36
systems
which
accommodates



on
the
right
.

M3
Front
SuspensionImprovements

"
Reinforced
spring
plates,control
arms,
control
arm
bush-

ings,
steering
arms
.

"
Recalibrated
struts,
firmer
springs
.

"
Stiffer
stabilizerbar,
larger
stabilizer
bar
bushings
.

"
Front
stabilizer
linked
to
struts
.

M3
Wheels/Tires

"
Front
wheels
1992-1998
:.....
7
.5J
x
17
in
.
light
alloy

"
Rear
wheel
1992-1997
.......
7
.5J
x17
in
.
light
alloy

"
Rear
wheel
(option)
........
.8
.5
Jx17
in
.
light
alloy

"
Front
and
rear
tire

1992-1997
.............
.
.
.
...
...
235/40
x
17
in
.

"
Front
tire
1998
only
......
...
.
.
.
...
225/45
x
17
in
.

"
Rear
tire
1998
only
.......
.
.
.
...
...
245/40
x
17
in
.

CAUTION-

In
en
emergency,
an
M3
front
wheel/tire
assembly
may
be
mounted
on
the
rearaxle
.
However
a
rear
wheel/tire
assemblymust
not
be
mounted
on
the
front
axle
.

M3
RearSuspensionImprovements

"
Reinforced
trailing
arms
.

"
Recalibrated
shock
absorbers,
firmer
springs
.



SUSPENSION
AND
STEERING

TROUBLESHOOTING

Stable
handling
and
ride
comfort
both
depend
on
the
integ-

rity
of
the
suspension
and
steering
components
.
Any
symp-

tom
of
instability
or
imprecise
road
feel
may
be
caused
by

worn
or
damaged
suspension
components
.

When
troubleshooting
suspension
and
steering
problems,

also
consider
the
condition
of
tires,
wheels,
and
their
align-

ment
.
Tire
wear
and
incorrect
inflation
pressures
can
dramati-

cally
affect
handling
.
Subtie
irregularities
in
wheel
alignment

angles
also
affect
stabílity
.
Mixing
different
types
or
sizes
of

tires,
particularly
on
the
same
axle,
can
affect
alignment
and

may
unbalancea
car's
handling
.

Table
b
lists
the
symptoms
of
common
suspension
and

steering
problems
and
their
probable
causes,
and
suggests

corrective
actions
.
Bold
type
indicates
the
repair
groups

where
applicable
test
and
repair
procedures
can
befound
.

SUSPENSION
AND
STEERING
TROUBLESHOOTING

ELE-128
ELECTRICAL
WIRING
DIAGRAMS

108620

ASS
CONTROL
MODULE/
HYDRAULIC
UNIT

~4
GRN/BLU/YEL
7
9
RED/GRN
116
GRY/BLK/YEL
)
18
BLU
IRE1=
25
RE0/BLU
11
BR
22
BRN
66
BFN
,6
BLU

17
WHT/VIO

G
RN/
BLU/
YEL

WHT/VIO
-
26
___



DATALINK
CONNECTOR
119
YELX20
BRN
X21
WHT/GRY/YEL



BRN/RED

7
X22
YEL/BLK
23
YEL/BRN
8B
RN
X24
BRN

G202'A_'G203
(31811)
(318,323,
328,M3)

ABS/AST

1998w/
Traction
Control

HOTINRUN



.
.TAT



HOT
IN
RUN



HOTINACCY,



HOTATANDSTART



ALLTIMES



AND
START



SUNAND
START



ALLTIMES
--------
-----------
--
FRONT
POWER
USE



L
USE



FUSE



I
FUSE



I
FUSE



IDISTRIBUTIONBOX
F38



12
30A



SA
---



----------
v----------
,
16
1



4

GRNI



RED/



pRN/



-1



RED/8LU/
I



GFN
I



VIO
I



YEL
I



BLUYEL
I



I

GRY/
BLK/
YEL
ENGINE
CONTROLS
SYSTEM

INSTRUMENT
BRAKE
(
CLUSTER



'LIGHT
ASS
I



I



(SWITCH
IND
I



I(
~~

--I

F46



F10
I
16A-



0
I
------
---

20T

EXTERIOR
LIGHTS
SYSTEM

rf,



'
o



-
o
S



1
1,
E-
01
.
1
l

G202
''G203
(31811)
(318,323,
328,
M3)
-202
t
G203
(31811)
(318,323,
328,M3)