1996 BMW M3 tire pressure

340-2
BRAKES

When
troubleshooting,
keep
in
mind
that
tire
inflation,
wear

and
temperature
can
affect
braking
and
suspension
.
See310

Front
Suspension
for
more
information
on
front
suspension

parts
inspection
.

Table
a
lists
symptoms
of
brake
problems,
their
probable

causes,
and
suggested
corrective
actions
.

Table
a
.
Brake
System
Troubleshooting

Symptom



1



Probable
cause



1



Repairs

Brake
squeal



a
.
Incorrectly
installed
brake
pads
or



a
.
Check
component
installation
.
parking
brake
shoes
b
.
Brakepad
carriers
dirty
or
corroded



b
.
Remove
brake
pads
and
clean
calipers
.
c
.
Brake
pad
anti-rattle
springs
faulty
or



c
.
Install/replace
anti-rattle
springs
.
missing
d
.
Brakepads
heat-glazed
or
oil-soaked



d
.
Replace
brake
pads
.
Clean
rotors
.
Replace
leaking
calipers
as
required
.
e
.
Wheel
bearings
worn
(noise
most



e
.
Replace
worn
bearings
.
See310
Front
Suspension
pronounced
when
turning)



or
330
Rear
Suspension
.

Pedal
goes
to
f
loor
when
braking



a
.
Brake
fluid
leve¡
low
due
to
system



a
.
Check
fluidlevel
and
inspect
hydraulic
system
for
leaks



signs
of
leakage
.
Fill
and
bleed
system
.
b
.
Master
cylinder
faulty



I
b
.
Replacemaster
cylinder
.

Low
pedal
after
system
bleeding



1
a
.
Master
cylinder
faulty



1
a
.
Replace
master
cylinder
.

Pedal
spongy
or
brakes
work
only



a
.
Air
in
brake
fluid



a
.
Bleedsystem
.
when
pedal
is
pumped



b
.
Master
cylinder
faulty
(interna¡
return



b
.
Replacemaster
cylinder
.
spring
weak)
c
.
Leaking
line
or
hose
unions



c
.
Repair
or
replace
lines
and
hoses
.
Bleed
system
.

Excessive
braking
effort



a
.
Brake
pads
wet



a
.
Use
light
pedal
pressure
to
dry
pads
while
driving
.
b
.
Brake
pads
heat-glazed
oroil-soaked



b
.
Replace
brake
pads
.
Clean
rotors
.
Replace
leaking
calipers
.
c
.
Vacuum
booster
or
vacuum
hose
con-



c
.
Inspect
vacuum
lines
.
Test
vacuum
booster
and
re
nections
to
booster
faulty



place
as
required
.
Test
vacuum
non-return
valve
for
one-way
air
flow
.

Brakes
pulsate,
chatter
or
grab



a
.
Warped
brake
rotors



a
.
Resurface
or
replace
rotors
.
b
.
Brake
padsworn



b
.
Replace
brake
pads
.
c
.
Brake
pads
heat-glazed
or
oil-soaked



c
.
Replace
brake
pads
.
Clean
rotors
.
Replace
leaking
calipers
.

Uneven
braking,
car
pulís
to
one



a
.
Incorrect
tire
pressures
or
worn
tires



a
.
Inspect
tire
condition
.
Check
and
correct
tire
pres-
side,
rear
brakes
lock



sures
.
b
.
Brake
pads
on
one
side
of
car
heat-



b
.
Replace
brake
pads
.
Clean
rotors
.
Replace
leaking
glazed
or
oil-soaked



calipers
.
c
.
Caliper
or
brake
pads
binding



c
.
Clean
and
recondition
brakes
.
d
.
Worn
suspension
components



d
.
Inspect
for
worn
or
damaged
suspension
compo-
nents
.
See
310
Front
Suspension
or
330
Rear
Sus-
pension
.

Brakes
drag,
bind
or
overheat



a
.
Brake
caliper
or
brake
pads
binding



a
.
Clean
or
replace
caliper
.(
b
.
Master
cylinder
faulty



b
.
Replacemaster
cylinder
.

WARNING
-

On
cars
with
All
Season
Traction
(AST),
special
BMW
service
equipment
is
required
to
properly
bleed
the
ABS/AST
system
.
For
safety
reasons,
the
brake
system
on
carswith
ABS/AST
must
not
be
bled
using
the
procedures
described
inthis
repair
group
.

BLEEDING
BRAKES

Brake
bleeding
is
usually
done
for
one
of
two
reasons
:
Ei-
ther
to
replace
oíd
brake
fluid
as
part
of
routine
maintenance
or
to
expel
trapped
air
in
the
system
that
resulted
from
open-
ingthe
brake
hydraulic
system
during
repairs
.

BLEEDING
BRAKES

Alwaysuse
new
brake
fluid
from
an
unopened
container
.It

is
important
to
bleed
the
entire
system
when
any
part
of
the

hydraulic
system
has
been
opened
.
On
cars
not
equipped
with
traction
control
(AST),
brake
system
bleeding
should
be

done
with
a
pressure
bleeder
.
On
cars
with
AST,
brake
bleed-

ing
should
be
done
by
an
authorized
BMW
dealer
.

WARNING
-

On
cars
with
All
Season
Traction
(AST),
special
BMW
service
equipment
is
requíred
to
properly
bleed
the
ABS/AST
system
.
For
safetyreasons,
the
brake
system
on
carswith
ABS/AST
must
not
be
bled
using
the
procedures
described
inthís
repair
group
.

ELE-132
ELECTRICAL
WIRING
DIAGRAMS

2
REDIGRN

3
BLKIGRY
4
BLKIBLU

5
GRY/BLK
B
SRN/ORG

YEL/GRN

y8
YEL/VIO
y7
.
BRNIYEL

18
REDIGRN

AUXILIARY
FAN
MOTOR

7449
4

NORMALSPEED



HIGHSPEED
RELAY



RELAY

Air
Conditioning
&
Heating

1993-95
Except
318ti
(2
of
2)

J
.
-
~~

BLOWER
SWITCH
THERMAL
LIMITER

!A~~I1011111~!~lu_
y9
BLK/RED



I



I

2
G

~~~Jl~li~i~

MEMINMEM
BLOWERBLOWER
RESISTORS
MOTOR

al
a
F

I
J
,



2j
,

RESHAI~R



DASHVEN~TMIXING
RECIR



EA
PORPTOR
COMPRESSOR



LAP
MOTOR



FLAP
MOTOR



FLAP
MOTOR



TEMPERATURE
SENSOR
CONTROLRELAY

REDIGRN
2
G
RN
5

GRN
6

REDIGRN
B

BLK/WHT/VEL
4

PARK
HEATING/
VENTILATION
RELAY
BOX

BLK/WHT/YEL
14



I

ON-BOAR
COMPUTER

BRN



r
-
-------_
RED
"
I



I
VOLTAGEFORRECFLAP
RED



VOLTAGE
FORM
IX
FLAP



I
RED
3
iVOLATAGEFORFRESH
FLAP



!
(
BLK/REDIYEL



4

s~l
YEL
6
I
AICCOMPRESSOR



WHT
7
IRECIRCFLAPACTIRECIRCFLAPACT
BLK
WHT
EL
8



DRY
B
I
RECIPC
FLAP
ACT
9



BRN
RED



BLU



9
IRECIRCFLAPACT
CRY



YEL
10
I
FRESH
FLAP
ACT
WHT
11
yy



BLU



IFRESH
FLAP
ACT
12



VELREDGRV



12,
`
I
FRESH
FLAP
ACT
13



YEL
BLU



BLU
13
I
FRESH
FLAP
PCT
14



VELRED



-LIRE
D14
IVGLTAGEFORROTSW
.
1



GRNIBLU



COMPUTER
!~WHT/VEL
15I
DATAJ
~IIDATALINE
l



WHT
/VIO



16
LINES
l~C
i
DATA
LINE
VEL/VIO
17
VENTFLAP
SWITCH
BRN/VEL
18,
1

DEFOG
REAR
GER~
BRN/YEL
20(
1
SYSTEM
2
'
IREAPDEFOGGERACT
BLU/BLK
22(
I
ICOMPRESSORCONTROL
BLU
2
3~
DASH
ENTMIXFLAP
L
SPIN
GRV
24
20IOASHVENTMIXFLAP
Jt
II



IIII



WH7
25
BELOW



ABOVE



YEL
26
`IDAS
.VENTMIXFLAP
B
11
.P
6
.30
BAR



gLK/GRV



.



ODASHVENTMIXFLAP

INTEGRATED
GLIMATE
ABOVE
BELOW



REGULATI
A



It



L-
-
--
-
-
---
--
ONCONTROLMODULE
2
.6



21
BAR



BLU/BLK
BAR
BELOW
158AR



BLK/
}
GR


N
ABOVE
BRN
18
BAR
PRESSURESWITCH
1994-95

BRN



i..~I

VEL/GRN
2
GRV/BLK
3

DR
./-
1

MIXINGACTUATOR

RIGHTHEATEXCHANGER
TEMPERATURESENSOR

6PN/ORG
2

BLU
I

OUTSIDE
TEMPERATURESENSOR

8299
1

/~



EXCEPT
BRAKE



~J
1997
FLUID
IND
A23
~
.
A16
I



I
SRS
IND

A17

81
18
B

B24

J,



CHARGE
PARK



IND
BRAKE
IND

CHECK
ENGINE
IN.

LEFT
TURN
IND

RIGHT
TURN
IND

1997
ONLY
FUEL
CONSUMPTION
METER

CHECK
IND

SEAT
FRONT
BELT
10
.
LT
INDIND

HIGH
BEAM
IND

FUEL
RESERVE
IND

FUEL
GAUGE

ILL
UM



A22



25
~
(3
USED)



EXCEPT
y
28
7992

TEMPGAUGE

INSTRUMENT
CLUSTER

InstrumentPanel

1992-97
Except
318ti
(1
of
2)

B

-ELECTRICAL
WIRING
DIAGRAMS
ELE-165

HOTATALLTIMES
________



HOT
IN
RUNAND
START



HOTATALLTIMES
IGNITION
r



FUSE



FUSE
I
FRONT
UTION
I



(SWITCH
F21



~F31
DISTRIB1000%
LOCK



START
LOCK



START
LL
I
5
_A
_-__-
ACC
RUN
ACC
RUN



14



2
L---



-------
-
-



OR
N1



RED/
T



V



YEL
11

EXCEPT



2



lo
GRN
1997
VIO

RED/WHT
1
(ORWHT)
2
GRYIRED
3
BLU/BRN
4
BLU/GRN
5
GRVIBRN

BS
7
CONVERT-
8
ISLE
ONLY

HEADLIGHTS
SYSTEM
INTERIOR
LIGHTS
SYSTEM
EXTERIOR
LIGHTS
SYSTEM
EXTERIOR
LIGHTS
SYSTEM
TRANSMISSION
SYSTEM
EXTERIOR
LIGHTS
SYSTEM

9
I
iw
.TIBLU
POWERTOPSSYSTEM
11
WHT/YEL
12
WHT/VIO
13
BRN/RED
14
BLU/BLK
15
VIO
16
GRY
-
ENGINE
CONTROLS
SYSTEM
17
BRN/GRN
18
BAN
/Vlo19
YEL
20



BLK



ENGINE
CONTROLS
SYSTEM
A79



21
WHT/BLK
22
RED/YEL
814



23
GRNIVIO
24
BRNIORG

SUPPLEMENTAL
RESTRAINTS
SYSTEM

SPEEDOMETER



816
CONNA
1
WHTIRED
B4
~2
BLK/WHT
ROLLOVER



33
8R~N
PROTECTION
IND



B17



4
GRN/BLU
(CONVERTIBLE)



5
GRIN
TACHOMETER



B18



6
BLU



STARTING/
7



CHARGINGSYSTEM
A20



8
YELIBRN
B
-K/FED
10
WHTIGRY
11
GRYIBLK/YEL
12



BL
LISP
N13
GRN/PED
14
BLU/VIO/YEL
15
WHT/GRN
89



16
VIO/YEL



BRN
"



~I
G202
17
BRNIYEL



GRY/BLK,



BFN

15



18
BN/VIO



VEL
B
ANT
19
BRNIGRN



1997
LOCK



~`r~i
j



W/OASCW/ASO
83



20
GRYIBLK/VEL



ONLY
SYES
4



STEM
GRV/BLK/VEL
21
(ORBRN)



(ORBRN)
22
BLU/BLK
23
BRN/GRV/VEL



BRNIGRVIVEL
19

BRN/GRV
OR
BRN/GRN

HEADLIGHTS
SYSTEM

BODYCOMPUTER
SYSTEM
ANTI-LOCK
BRAKESSYSTEM
ANTI-LOCK
BRAKESSYSTEM
(EX
1992
A1993)
ENGINE
CONTROLS
SYSTEM
(1997
ONLY)
BLU/VIO/YEL

J

EXCEPT
1
.92
.
1993

BIN/
VIO
BRN/GRN

11

OIL



[
._~]
PARK



RA11FL11

AL.^



SWITCH
I
PRESSURE



BRAKE



LEVELSW
U
ITCH
SWITCH

111
G202
GROUND



GROUND

REDIYELRED/YELRED/YEL
WHTIYEL
WHT/VIO
BRN/RED

YEL

GRN/BLU
BLKIWHTBRN/BLK
BLK/RED

WHTIGRN
VIO/YEL
BRNIYELBRN/VIO
BLU/BRNIYEL

BRN/YEL

e9
0
11

1213
141516

WARNING

Your
common
sense,
good
judge-
ment,
and
general
alertness
are
cru-
cial
tosafe
and
successful
service
work
.
Before
attempting
any
work
on
your
BMW,
read
the
warnings
and
cautions
on
page
vi¡
and
the
copyright

page
at
the
frontof
the
manual
.
Review
these
warnings
and
cautions
each
time
you
prepare
to
work
on
your
BMW
.
Please
also
read
any
warnings
and
cautions
that
accom-
pany
the
procedures
in
the
manual
.

Fuel
pressure
regulator
See
Fuel
injection
Fue]
pump
general
information
160-1
electrical
tests
160-7
power
consumption,
testing
160-7
delivery
tests160-8
delivery
volume,
testing
g
160-9
electrical
circuit,
checking
160-7
fuse
and
relay
160-6
level
sender
See
pump/fuel
leve¡
sender
operating
fuel
pump
for
tests
160-6
pump/fuel
level
sender
(left
side),
removing/installing
160-6
pump/fuel
leve¡
sender
(right
side),
removing/installing
160-5
relieving
fuel
pressure
and
connecting
fue¡
pressure
gauge
160-8
Fueltank
and
lines
general
information
160-1
draining
160-2
evaporative
control
system
160-4
leve¡
senders,
testing
160-5
removing/installing
160-3
Fundamentals
for
the
do-it-yourself
owner
general
information
010-1
advice
for
the
beginner
010-4
cleanliness
010-4
electrical
testing
010-6
gaskets
and
seals
010-5
non-reusable
fasteners
010-5
planning
ahead
010-4
tightening
fasteners
010-5
wire
repairs
010-6
buying
parts
010-6
genuine
BMW
parts
010-6
information
you
need
to
know
010-7
non-returnable
parts
010-7
emergencies
010-11brake
fluid
leve¡
010-13
car
will
not
start
010-11
changinga
tire
010-11
check
enginewarning
light
010-13
dim
Iights
010-13
jump
starting
car
010-12
low
o]I
pressure
010-13
overheating
010-12

Emergencies
(cont
.)
spare
parts
kit
010-14
towing
010-13
gettingstarted
010-2
lifting
thecar
010-3
raising
car
safely
010-3
safety
010-2
working
under
car
safely
010-4
how
to
use
this
manual
010-2
warnings,
cautions
and
notes
010-2
service
010-7
tools
010-7
basic
tool
requirements010-8
BMW
specialtools
010-11
feeler
gauges
010-10
jack
stands
010-9
oil
change
equipment
010-9
torque
wrench
010-10
volt-ohm
meter
(VOM)
or
Multi-
meter010-10
Fuses
See
Electrical
component
locations

G

Gaskets
See
Fundamentals
for
the
do-it-
yourself
owner
Gearshift
See
Gearshift
linkage
Gearshift
linkagegeneral
information
250-1
automatic
shiftlock,
checking
function
250-5
automatic
transmission
gearshift
250-
3
gear
position/neutral
safety
switch,
replacing
(automatic
transmission)
250-4
gearshift
lever,
installing
(manual
transmission)
250-2
gearshift
lever,
removing
(manual
transmission)
250-1
gearshift
mechanism,
adjusting
(automatictransmission)
250-3
manual
transmission
gearshift
250-1
shift
interlock,
checking
function
(automatic
transmission)
250-6Glass
See
Door
windows
Glove
compartment
See
Interior
trim
Grille
See
Exterior
trim,
bumpers
Guibo
(flex
disc)
See
Driveshaft

Handle,
door
See
Doors
Hardtop
See
Body-general
Headlight
See
Exterior
lighting
Headlight
switch
See
Switches
and
electrical
accessoriesHeater
box
See
Heating
Heater
core

See
Heating
Heater
valve
See
Heating
Heating
general
information
640-1
air
distribution
motors
640-9
air
distribution
motor,
replacing
(rotary
knob)
640-10
blower
motor,
removing/installing
640-1blower
motor
resistor
pack,
replacing
640-3
control
head
640-7
removing/installing
(digital-display)
640-8
removing/installing
(rotary
knob)
640-7
control
module
removing/installing
(digital-display)
640-8
removing/installing
(rotary
knob)
640-8
heater
box,
removing640-4
heater
core,
replacing
640-6
heater
core
temperature
sensor,
replacing
640-7
heater
valve,
replacing
640-3
rear
window
blower
(convertible
models)
640-10
reas
window
defogger
640-10sensor
fan
forinterior
temperature,
replacing
640-9warnings
and
cautions
640-11
Hood
See
Fenders,
engine
hood

Idle
speed
See
Maintenance
program
Idle
speed
control
valve
See
Fuel
injection
Ignition
switch
See
Switches
and
electrical
accessories

INDEX
5

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