regulator valve BMW 328i 1997 E36 Workshop Manual

GENERAL
.
.
.
.
.
.
.
.
.
...
.
.
.
.
.
.
.
.........
130-2



Intake
air
temperature
(IAT)
sensor,

Principles
of
Operatinn
.
.
.
.
.
.
.
.
.
.........
130-2



testing
and
replacing
...
.
...
.
.
.
.......
.
130-19

Basic
Engine
Settings
.
.
.
.
.
.
.
.
.
.
.
.
.
.
...
:
.
130-3



Throttle
position
sensor
(TPS),

DISA
(Dual
Resonance
Intake
System)
.
.
.
.
.
130-3



testing
and
replacing
...
.
...
.
.
.
.
.
...
.
.
.130-19

On-Board
Diagnostics
(OBD)



Idle
speed
control
valve,
testing
.
.
.
.
.
.
.
.
.
.
130-20

and
Fault
Diagnosis
.
.
....
.
......
.
.
.
...
130-4



Idle
speed
control
valve,
replacing
.
.
.
.
.
.
..
130-21

SecondaryAir
Injection
.
.
.....
.
.........
.
130-5



BOSCH
DME
M5
.2
COMPONENT
Warnings
and
Cautions
.
.
...
.
.
.
.........
.
130-6



REPLACEMENT
.....
.
......
.
....
.
.
.
..
130-21

ELECTRICAL
CHECKSAND



Mass
air
flow
sensor,
replacing
.
.
....
.
....
130-22

COMPONENT
TESTING
.
.
.
.
.
.
.
.
...
.
.
.
.
.
130-7



Engine
coolant
temperature
(ECT)

Main



sensor,
replacing
..
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
130-22
rela
y
testing



130
-7
,...
.
.
.
.
.
.
.
.
.
...
.
.
.
.
.
.
.



Intake
air
temperature
(IAT)
sensor,
Fuel
pump
relay,
testing
.
.
.
.
.
.
.
...
.
.
.
.
.
.
.
130-7



rep
lacin
.
.
.
.
.
.
.
.
.
.
.g



.
.
.
.
.
.
.
...
.
.
.
..
.130-22
Oxygen
sensor,
testing
(Boschsystems
only)
130-8



Throttle
poson
sensor
(TPS)
replacing



13022
,



..
.-

FUEL
DELIVERY
TESTS
...
.
....
.
.
.
...
.
130-9



Idle
speed
control
valve,
replacing
...
.
....
.130-23

Operating
fuel
pump
for
tests
.
.
.......
.
...
130-9



SIEMENS
MS
41
.1
COMPONENT
Relieving
fuel
pressure
and



REPLACEMENT
.
...
.
.
.
.
.
.......
.
....
.130-23
connecting
fuel
pressure
gauge
......
.
..
130-10

Residual
fuel
pressure,
testing
.
.....
.
.
.
.
.
130-10



Mass
air
flow
sensor,
replacing
.
.......
.
.
.130-25

Fuel
pressure
regulator
response



Engine
coolant
temperature
(ECT)

to
engine
load,
testing
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
130-11



sensor,
replacing
.....
.
.
.
.
.
.........
.130-25

Fuel
rail
and
injectors,
checking
...
.
.
.
.
.
.
.
130-11



Intake
air
temperature
(IAT)
sensor,
replacing
.
.
.
.
.
.....
.
.
.
.
.
.
.
.......
.
.
.130-25
Fuel
rail
and
injectors,
replacing



..
.
.
.
.
.
.
.
130-12



Throttleposition
sensor
(TPS),
replacing
.
.
.
130-26
Fuel
PressureRegulator
.........
.
.
.
.
.
.
.
130-13



Idle
s
eed
control
valve,
re
lacin



130-26
Fuel
pressure
regulatorreplacing



p



p



g
.'''...
.
'
,

(fuel
rail
mount)
...
.
.
.
.
.
.............
130-13



ECM
PIN
ASSIGNMENTS
.............
.
.
130-26
Fuel
pressure
regulator,
replacing



Engine
control
module
(ECM),
accessing
...
130-26
(undercar
mount)
.
.
.
.
.
.
.
.
.........
.
.
130-14

BOSCH
DME
M1
.7
COMPONENT

TESTS
AND
REPAIRS
.
.
.
.
.
...
.
.
.
.
.
.
.
.
130-14

Air
flow
sensor,
testing
and
replacing
.
.
.
.
.
.
130-14

Engine
coolant
temperature
(ECT)

sensor,
testing
and
replacing
...
.
.
.
.
.
.
.
.
130-15

Throttle
position
sensor
(TPS),

testing
and
replacing
.
..........
.
.....
130-16

Idle
speed
control
valve,
testing
and
replacing
.
.
.
.
.
............
130-16

BOSCH
DME
M3
.1
AND
M33
.1

COMPONENT
TESTS
AND
REPAIRS
.
.
.
130-17

Mass
Air
Flow
Sensor
.
.
.
.
.
.
.
.
.....
.
.
.
.
.130-17

Mass
air
flow
sensor
(hotwire),testing
and
replacing
.
.
.
.
.
.....
.
.
.
.
.
.
.
130-17

Mass
air
flow
sensor
(hot
film),

testíng
and
replacing
.
.
.
.....
.
.
.
.
.
.
.
.
.
130-18
Engine
coolant
temperature
(ECT)

sensor,
testing
and
replacing
..
.
.
.
.
.
...
.
130-18

130
Fuel
i
n
jection

FUEL
INJECTION



130-1

TABLES
a
.
Engine
Management
System
Variants
.........
.130-2
b
.
Mass
Air
Flow
Sensor
Variants
..
.
..
..........
.130-2
c
.
Fuel
Pressure
Specifications
..
.
.
...
..........
130-11
d
.
Engine
Coolant
Temperature
Sensor
or
Intake
Air
Temperature
Sensor
Test
Values
(DME
1
.7)
...
.
130-15
e
.
ThrottlePosition
Sensor
Tests
(DME
1
.7)
......
.130-16
f
.



Engine
Coolant
Temperature
Sensor
or
Intake
Air

Temperature
Sensor
Test
Values
(DME
3
.1/3
.3
.1)130-19
g
.
Throttle
Position
Sensor
Tests
(DME
3
.1/3.3
.1)
.
.130-20
h
.
ECM
Pin
Assignment-Bosch
DME
M1
.7
....
.
..
.130-28
i.



ECM
Pin
Assignment-Bosch
DME
M3
.1
.......
.130-30
j
.



ECM
Pin
Assignment-Bosch
DME
M3
.3
.1
.....
.130-32
k
.
ECM
Pin
Assignment-Bosch
DME
M5
.2
.......
.
130-34
I.



ECM
Pin
Assignment-Siemens
DME
MS
41
.1
..
.
130-36

130-
1
0



FUEL
INJECTION

Relleving
fuel
pressure
and
connecting

fuel
pressure
gauge

WARNING
-

"
Gasoline
is
highly
flammable
and
its
vaporsare
explosive
.
Do
not
smoke
orwork
on
acarnear
heaters
or
other
fire
hazards
when
diagnosing
and
repairing
fuel
system
problems
.
Have
a
fire
extinguisher
available
in
case
of
an
emergency
.

"
When
working
onanopen
fuel
system,
wear
suit-
able
hand
protection
.
Prolonged
contact
with
fuel
can
cause
illnesses
and
skin
disorders
.

To
prevent
fuel
from
spraying
on
a
hot
engine,
system
fuel

pressure
should
be
relieved
before
disconnecting
fuel
lines
.

One
method
is
to
tightly
wrap
a
shop
towel
around
a
fuelline
fit-

ting
and
loosenor
disconnect
the
fitting
.

Cleanliness
is
essential
when
working
with
fuelcircuit
com-
ponents
.
Thoroughly
clean
theunionsbefore
disconnecting
fuellines
.

NOTE-

"
OnM44
engines,
a
Schrmder
valve
is
integrated
in
the
fuel
rail
.
Compressed
air
pressure
canbe
applied
at
the
valve
to
force
the
fuel
in
the
system
back
into
the
tank
.
See
Fig
.
11
.

0012503

Fig
.
11
.
Fuel
rail
showing
location
of
Schraeder
valve
fitting
on
M44
engine
(arrow)
.

NOTE-

B~
specifies
a
special
gauge
and
special
connecting
adapters
to
measure
fuel
pressure
.
If
the
special
tools
arenot
available,
a
length
of
fuel
fine
and
a
T-fitting
canbe
installed
to
the
inlet
fuel
fine
and
connected
to
a
fuel
gauge
.
On
some
vehicles,
thisis
not
possible
without
cutting
finto
a
fuel
lino
.
In
these
lnstances,
it
Is
recom-
mended
that
fuel
pressure
be
checked
at
theoutput
sidoof
the
fuel
pump
.
See
160
Fuel
Tankand
Fuel
Pump
.

FUELDELIVERY
TESTS

On
OBD
II
6-cylinder
engines,
the
fuel
lines
use
a
special

locking
fitting
.
Use
BMW
special
tool
16
1
050
to
release
the

fittings
and
connect
the
fuel
gauge
.
See
Fig
.
12
.

0012699

Fig
.
12
.
Fuel
linos
at
rear
of
intake
manifold
on
M52
engine
.
Use
BMW
special
tool
16
1
050
torelease
fittings
.

WARNING
-

"
Gasoline
is
highly
flammable
and
its
vapors
are
explosive
.

"
The
fuel
pressure
gauge
must
be
securely
con-nected
to
prevent
it
from
coming
loose
under
pressure
.

NOTE-

"
The
fuel
pressure
gauge
should
have
arangoof
0
to
5
bar
(0
to
75
psi)
.

"
On
6-cylinder
engine,
thetop
left-sido
engine
cover
will
have
to
be
removed
to
access
the
fuel
rail
.

Residual
fuel
pressure,
testing

For
quick
restarts
and
to
avoid
vapor
lock
when
the
engine
is
hot,
the
fuel
injection
system
is
designed
to
retain
fuel
pres-
sure
after
the
engine
has
been
turned
off
.
Thís
residualpres-
sure
is
primarily
maíntained
by
a
check
valve
at
the
fuel
pump
outiet
and
the
fuel
pressure
regulator
.
The
fuel
pump
check
valve
is
not
serviceable
asan
individual
part
.

1.
Relieve
fuel
pressure
and
connect
a
pressure
gauge
as
described
earlier
.

WARNING
-

Fuel
will
be
discharged
.
Wrap
a
shop
towel
around
the
fuellino
fitting
when
disconnecting
the
fuel
fine
.
Do
not
smoke
or
worknear
heaters
or
other
fire
hazards
.
Keep
an
approved
fire
extinguisher
handy
.

2
.
Operate
fuel
pump
for
approximately
one
minuto
by
by-
passing
fuel
pump
relay
as
described
earlier
.
Observe
fuel
pressure
.

3
.
Observe
fuel
pressure
gauge
after
20
minutes
.
The

pressure
shouldnot
drop
off
more
than
0
.5
bar
from

system
pressure
listed
in
Tablec
.

4
.
When
finished
testing,
disconnect
pressure
gauge
and
reconnect
fuel
line
.

If
the
fuel
system
does
not
maintain
pressure,
check
visual-
¡y
for
leaks
in
fuel
lines
orat
unions
.
Leaks
can
also
be
due
to
a
leaking
injector
or
a
faulty
fuel
pump
check
valve
.
Check
the

pump
check
valve
by
repeating
the
test,
butbefore
turning
the

fuel
pump
off,
pinch
off
theretum
line
at
the
fuel
rail
.
If
the

pressure
is
now
maintained,
the
fault
is
most
likely
the
fuel

pump
check
valva
.

Tabla
c
.
Fuel
Pressure
Specifications

Engine



1
Fuel
pressure

4-cytinder



1
3
.0
t
0
.2
bar
(43
.5
t
2
.9psi)

6-cytinder
M50/S50US
engine



3
.0
t
0
.2
bar
(43
.5
±2
.9psi)
M52/S52US
engine



3
.5
f
0
.2
bar
(51
t
2.9psi)

Fuel
pressure
regulator
response

to
engine
load,
testing

1
.
With
fuel
pressure
gauge
connected,
reinstallfuel

pump
relay
.
Start
engine
and
allow
it
to
idle
.

NOTE-

The
fuel
pressure
should
be
lower
by0
.4-0.7
bar
from
the
specifications
listed
in
Table
c
.
Engine
vacuum
act-
ing
on
the
fuel
pressure
regulator
diaphragm
reduces
the
fuel
pressure
.

2
.
With
engine
idling,
remove
vacuum
hose
from
regula-

tor
.
Pressure
should
increase
.

3
.
Reconnecthose
and
check
that
pressure
decreases
.

4
.
When
finished
testing,
disconnect
pressure
gauge
and

reconnect
fuelline
.
Tighten
hose
clamp
.



0013190

Fig
.
13
.
For
electrical
tests,
4-cytinder
fuel
injector
harnessduct
can
be

If
fuel
pressure
does
not
drop
with
the
vacuum
hose
con-



accessed
between
intake
manifold
and
cytinder
head
cover
.

nected
and
no
faulty
are
found
with
fuel
the
pressure
regulator

vacuum
hose,
the
fuel
pressure
regulator
is
faulty
.



1
.
Check
that
ECM
signal
is
present
atinjector
connector
.

NOTE-

A
cracked
or
leaktng
pressure-regulator
vacuum
hose

may
cause
en
erratic
tdle
.

FUEL
INJECTION



130-
11

Fuel
rail
and
injectors,
checking

The
fuel
injectors
are
switched
on
and
off
(opened
and
closed)
by
the
ECM
.
The
injectors
are
connected
to
a
com-
mon
fuel
supply,
callad
the
fuel
rail
.

The
fuel
injectors
are
removed
by
first
removing
the
com-
plete
fuel
rail
assembly
and
then
unclipping
the
injectors
from
the
fuel
rail
.

CA
UTION-

Use
only
a
digital
multimeter
or
an
LED
injector
tester
when
testing
injectors
or
wiring
.
Use
of
ananalog
VOM
or
incandescent
testlight
may
dam-
age
the
engine
control
module
.

NOTE-

"
On
4-cytindercars
pry
up
the
injector
wiring
duct
and
then
pry
off
the
cover
.
See
Fig
.
13
.

"
On
6-cytinder
cars
it
is
necessary
to
remove
the
top
engine
cover(s)
to
access
the
fuel
rail
and
injectors
.

"
Back
probe
injector
harness
connector
using
digital

voltmeter
.
See
Fig
.
14
.

"
Operate
starter
or
run
engine
and
check
for
pulsad

voltage
signal
.
"
Repeat
for
each
injector
.

NOTE
-

To
quick-check
if
en
injectorfunctioning,
place
a
screw-
driver
or
stethoscope
on
the
injector
with
the
engine

running
.
If
the
injector
is
operating,there
should
been

audible
buzz
.

FUEL
DELIVERYTESTS

130-
1
4



FUEL
INJECTION

NOTE-

Be
sure
to
retrieve
thrust
washer
behind
fuel
pressure
regulator
on
6-cylinder
engine
.

4
.
Installation
is
reverse
of
removal
.
Replace
O-rings
.

Fuel
pressure
regulator,
replacing

(under
car
mount)

WARNING
-

Fuel
will
be
discharged
.
Do
not
disconnect
any
wires
that
could
cause
electrical
sparks
.
Do
not
smoke
or
work
near
heaters
or
other
fire
hazards
.
Keep
an
approved
tire
extinguisher
handy
.

On
late
4-
and
6-cylinder
cars,
the
fuel
pressure
regulator
is

mounted
beneath
the
left
sideof
the
car,
under
a
protective

cover
.
See
Fig
.
20
.

0012726

Fig
.
20
.
Fuel
pressure
regulatorlocation
underneath
car
(arrow)
.
Vac-
uum
hose
to
regulator
is
shown
at
A
.
(Protective
cover
has
been
removed
.)

5
.
Installation
is
reverse
of
removal
.
Replace
O-rings
.

BOSCH
DME
Ml
.
7
COMPONENT
TESTS
AND
REPAIRS

BOSCH
DME
Ml
.7
COMPONENT

TESTS
AND
REPAIRS

CA
UTION-

Use
only
a
digital
multimeter
when
testing
compo-
nents
and
wiring
.
Use
of
an
analog
VOM
may
damage
the
engine
control
module
.

4-cylinder
cars
with
M42
engines(1992
to
1995)use
the

Bosch
DME
M1
.7
fuel
injection
system
.

Electrical
tests
of
the
main
and
fuel
pump
relays
and
the

DME
engine
control
module
(ECM)
are
covered
earlier
in
this

section
.
Fuel
pump
tests
arecovered
in
160
Fuel
Tank
and

Fuel
Pump
.

Air
flow
sensor,
testing
and
replacing

DME
M1
.7
fuel
injection
uses
a
volume
air
flow
type
sensor

with
integrated
intake
air
temperature
(IAT)
sensor
.
The
sen-

sor
provides
a
varyingvoltage
signal
to
the
ECM
based
on
the

position
of
the
air
vane
.
As
the
vane
doorswings
open
thepo-
tentiometer
increases
the
voltage
signal
to
the
ECM
.
The
IATsensor
adapts
theoutput
signal
to
the
ECM
based
on
intake

air
temperature
.

1
.
Check
ECM
reference
voltage
to
sensor
:

"
Peel
back
rubber
boot
from
air
flow
sensor
harness

connector
.

"
Turn
ignition
keyon
.
"
Check
for
5
volts
between
terminal
1
of
harness
con-
nector
and
ground
.
See
Fig
.
21
.

"
Turn
ignition
key
off
.

"
If
voltage
is
not
present
or
incorrect,
check
wring
from

ECM
and
check
air
flow
sensor
reference
voltage
out-

put
at
ECM
.
See
Table
h
.
1
.
Working
under
car
below
driver's
seat,
remove
protec-
tive
cover
from
below
fuel
pressure
regulator
.

"
Remove
intake
air
bootfrom
sensor
.
2
.
Remove
vacuum
hosefrom
fuel
pressure
regulator
.



"
Connect
a
digital
multimeter
(ohms)
across
terminais
1

and
2
.
Swing
air
flow
sensor
vane
through
its
travel
3
.
Remove
locking
clip
retaining
fuel
pressure
regulator
.



range
.
Resistance
should
change
steadily
without
in-

terruption
.
4
.
Wrap
a
shop
rag
around
regulator,
then
remove
regula-



"
If
any
faults
are
found,
the
air
flow
sensor
is
faulty
and
tor
from
213
way
valve
by
pullingstraight
out
.



should
be
replaced
.

2
.
Check
air
flow
sensor
potentiometer
:

3
.
Check
IAT
sensor
resistance
:

"
With
harness
connector
disconnected
at
air
flow
sen-
sor,
check
resistance
across
sensor
terminais
4
and
5

of
air
flow
sensor
.
Compare
tests
results
to
values
in
Table
d
given
later
.
If
any
faults
are
found,
the
air
flow
sensor
should
be
replaced
.

NOTE-



NOTE
-

On
1996
and
later
4-cylinder
cars,
use
BMW
special



"
Use
BMW
pressure
gauge
Part
No
.
133
060,or
an
tool
13
6051
(hose
with
quick
release
coupling)
toat-



equivalent
.
The
fuel
pressure
gauge
should
have
a
tach
pressure
gauge
to
Shraeder
valve
fitting
on
top
of



rangeof
0
to
5bar
(0
to
75
psi)
and
mustbe
securely
the
M44
fuel
rail
.
See
Fig
.
13
.



connected
to
prevent
it
from
coming
loose
under
pres-
sure
.

u012503a

Fig
.
13
.
Fuel
rail
showing
location
of
Shrader
valve
fitting
on
M44
en-
gine
(arrow)
.

Later
model
6-cylinder
fuel
systems
require
BMW
specíal

tool
16
1
050
to
release
fittings
and
connect
the
fuel
gauge
.
See
Fig
.
14
.

0012699

Fig
.
14
.
Fuel
lines
at
rear
of
íntake
manifold
on
M52
engine
.
Use
BMW

special
tool
16
1
050
to
release
fittings
.

If
the
special
tools
arenot
available,
a
length
offuel
line
and

a
T-fitting
can
be
installed
tothe
inlet
fuel
line
and
connected

to
a
fuel
gauge
.

FUEL
TANK
AND
FUEL
PUMP



160-
9

"
On
cars
with
6-cylinder
engine,
thetop
left-side
en-
Bine
cover
will
have
to
be
removed
to
access
the
fuel
rail
.

System
pressure,
testing

System
pressure
is
the
pressure
created
by
the
fuel
pump
and
maintained
by
the
pressure
regulator
.
See
Fig
.
15
.
Sys-
tem
pressure
is
not
adjustable
.

1
.
Remove
fuel
tank
filler
cap
.

Fig
.
15
.
Fuel
pressure
regulator
.
Fuel
pressure
deflects
diaphragm
to
retum
fuel
to
tank
when
pressure
reaches
desired
limit
.

CA
UTION-

The
fuel
pump
is
capable
of
developing
a
higher
pressure
than
that
regulated
by
the
pressure
reg-
ulator
.
In
the
event
the
fuel
pump
check
valve
is
faulty
(stuck
closed),
make
sure
the
fuel
pressure
does
not
rise
aboye
6
.0
bar(87
psi)
.
Damage
to
the
fuel
fines
or
fuel
system
components
could
re-
sult
.

2
.
Connect
in-fine
a
Tfitting
and
fuel
pressure
gauge
to

outlet
hose
atfuel
pump
.

FUEL
PUMP

Component



Model
Year



Location



Refer
to

Heater
Recirculation
Flap
Actuator



1992-1998



Below
left
dash
right
side
of
steering
column

HeaterBlowerMotor
Resistor
Pack



1992-1998



Behind
center
of
dashboard

Heater
Regulator
FlapActuator



1997-1998



Right
side
of
heater
box

HeaterValve
Assembly



1992-1998



Left
rear
engine
compartment

HeatingNentilation
Relay
Box



1992-1993



Below
left
side
of
dash

HeatingNentilation
Relay



1994-1998



Left
front
footwell

High
Speed
Cooling
Fan
Relay



1992-1998



Power
distribution
box



Fig
.
2
.

Homs,
Right/Left



1993-1998



Front
of
engine
compartment

Horn
Relay



1992-1998



Power
distribution
box



Fig
.
2
.

Horn
Relay
(Alpine)



1994-1998



Behind
glove
compartment



Fig
.
8
.
Board
Computer/Anti-Theft



Fig
.
9
.

Idle
Speed
Control
Valve



1992-1995



Top
rearof
enginebehind
intake
manifold
(M42
engine)



Fig
.
11
.

Idle
Speed
Control
Valve



1992-1995



Top
left
side
of
engine
(M50
engine)

Idle
Speed
Control
Valve



1993-1996



Below
intake
manifold
(M50/S50US
engine)

Idle
Speed
Control
Valve



1996-1998



On
throttle
housing
(M44
engine)



Fig
.
15
.

Idle
Speed
Control
Valve



1997-1998



Left
front
of
engine
below
intake
manifold
(M52/S52US
engine)

Ignition
Coils



1992-1998



Right
of
engineunder
plastic
cover
(four-cylinder)



Fig
.
7
.

Ignition
Cofs



1992-1998



Top
of
engine
undercover
(six-cylinder)



Fig
.
17
.

Ignition
Switch



1992-1998



Right
sídeofsteering
column

Intake
Air
Resonance
Changeover



1992-1998



Leftrear
of
engine
compartment
Valve(DISA)

Intake
Air
Temperature
Sensor



1992-1995



In
mass
air
flow
sensor
(M42
engine)

Intake
Air
TemperatureSensor



1996-1998



In
top
ofair
filter
housing
(M44
engine)



Fig
.
12
.

Intake
Air
Temperature
Sensor



1992-1998



I
Left
sídeof
engine
in
intake
manifold
(six-cylinder)



-



-



I



Fig
.
13
.
Fig
.
14
.

Kick-Down
Switch
(A/T)



1
1992-1998



1
Left
footwell

Mixing
Actuators



1
1992-1998



1
Heater
box

ELECTRICAL
COMPONENT
LOCATIONS



610-15

Table
a
.
E36
Component
Locations

Knock
Sensors



1
1992-1998



1
Left
side
of
engine
block

Left
Front
Power
Window
Motor



11992-1998



/
Left
front
door

Left
Front
Window
Monitoring
Switch
1
1997-1998



1
Left
front
door
trim
panel

Left
Front
Window
Retraction
Switch
1
1992
-
1993



1
Left
front
door
handle
lock
assembly

Left
Splice
Panel



1
1992-1998



1
Under
left
side
of
dash
at
kick-panel



1



Fig
.
5
.

Main
Fuse
and
Relay
Box
(Power



1992-1998



I
Left
sideof
engine
compartment



Fig
.
2
.
Distribution
Box)
1



I

Mass
Air
Flow
Sensor



1992-1998



I
Left
side
of
engine,
intake
air
duct



Fig
.
7
.1



I
Fig
.
15
.

Continued

COMPONENT
LOCATIONS

ELE-96
ELECTRICAL
WIRING
DIAGRAMS

DATA
LINK
CONNECTOR

WHT/1110
COMPUTER
DATA
~~
LINES
SYSTEM



W
H
7VEL
~~
1

6



GRV/B
RN
EGS
WARNING
LP
I~
I_
_
__
HT
S
1K
FUELCONSUMPTION
21
W

INSTRUMENTCLUSTER
X16

BRN
-
1
VIO
SHIFT
LK
SOL
VEL/BLU



BRN
AUTOMODE
SIG



~,3

4
BR
1
N/GRV



G123
4-
IG
TIMING
IN
T
VALVE1
LIGHTS
BLU/RED



DR



ORG
5
NCA
I

SYSTEM
S-FROG
IND



7



YELIGRN



"
VEL/GRN



22



SOLENOID
VALVE2
GR
NOT
RNGSIGL3
9
BLU/WHT



-XK
USED)



GRN
6
I
NCA

TIM
EASSIG(FL)



WH7/BLK
I

B

-PROGIND



((NOT
10
YEL/BLU
A



"
VEL/BLU
23



I



PRESSURE
FL
PMPFLY
CTRL



11
ELK



%69
USED)



I



REGULATOR
M-PROGIND



12
YELIWHT



RED



9



NCAT%DDATA
LK



13
WHTIVIO



GRY



1



NCA
14
BLK
Do
TPUT
BPD
(-I



I



BAND
5BRNIGRV



BRNIGRY
KSWTESTSIG



"



I



I
SOLENOID

SW

1



I



BRN/I



110
2
NCA
)176
CLR



GRY'
OILTEMPSIG



8
BRAKE



I
I
TOROUE
S
PDSENSSHD



16
NCA



r



LIGHT
I
CONVERTER
~



(ITCH



I



C
LUTON
19
BR
N
GND



I
I



I



I



SOLENOID
OUTPUTSPD(+)
20V
EL



T



y1



I
-
ZJ



I



I



VALVE
P/COOMPON



1BLK/BLU~-



-



BLU



7



NCA
22
ELK



BR
`N



8



NOA
OILTPSIG(+)



BRN



I
3
BLUIBLK



I



OIL
GRRNGSIGLI



"



TEMPERATURE
4



I
BRNI
RxDDATALK
~6WHT/VEL



1



BLK



3I



NCA



S
ENSOR
6
BRN/BLK



G200
-



I



CLR



4



NCAGR
RNG
SIG
L2



1
,27



I
xIiS21
SPEED
1



I
~~
NCASENSOR
BATTERY
VOLT



B
RED



YE
L



1
FAULTINDBIG



9GRV/B
RN



-v



BLK
2



NLA
0
GRV/VEL
3
ICK-DO
W
N
SIG
1
VEL/WH7



"511



TRANSMISSION
WHT/
BLK

Transmission
Electronics

1992
3181,
318is,
3251
&
325is

HOTATALL
TIMES



r



_JFRONTPOWER



r_
__
__
_1
_,
B+



FUBE



FUSE



FUSE



DISTRIBUTION
BOX



'
JUNCTION
I
F26



F28



F48
I
L



L
161L
--
121l



16-J



RED/WHT



RED
"
RED/WHT
"
167q
3z



xi
.DOiB



{L
_CON7R
__
J
I
6
xiDD-tz



WHT



I
ENGINEOL
I
VIO/VEL



I



MODULERELAY
I
GRN/
OR
./
SYSTEM
RED
I



WHT
GRYI



"



ENGINE
I



I
"
~



CONTROLS
I



I
YSTEM

{5
___J
I

HOTINRUN



HOT
IN
SUN



HOT
IN
ACCV,RUN
&START
&51ART
&START

K
MAN
MODESIG



"



VALVE
UNIT
~
J
32
3BR
.IW
.T



BLK
74
GO
RNG
BIGL4f
ION-BOARD
FLPT



MPRLYCTRL
S-PROGBUTTON



4
VEL/GRN
5BRN/VID



WHT/BLK6'



ION-BOARD



B
W
RN/HT/
OB
R
L
G
K



1117IDKV



I
SHIFTLKGND



COMPUTER



FUELCONSUMPTION
GND
68RNIOMG



X1D
Zt
I
__J



"
--
BLKIBL
U
48
VOLTSUPPLV



OMPCTRL
I
37
RED/WHT



BRN/GRV



64
I

TCCSOLCTRL
6BLU



2



BR
IDRNVERANGEP/N
I
BRN/
SKPDLPOSIT
.
.



9
BLU/RED



VIO



NCA



SHIFTLOCK
II



J
HVO
CTRL
(+)



ENGINE
CONTROL

F
M
MODULE(0E)HVD
CTRL(-)



INSTRUMENT
CLUSTER
SYSTEM

0
RED
41
GRY



I
,42



VIO
1I
NCA
SOLVAL2CTRL



43
GRN
'44/45
VIO

VID/
E
~~~
1I1
..
L

BRAKE
(
LIGHT
I
(SWITCH
!
_
ZJ
2
T

EO
BLU/R

BLK/BLU

BANDSOLCTRL
,



-
'46'vi78
DR.
SOLVAL
1
CTRL



14



_
g



GRY/RED



2
r



J
(OUTPUT
DINNER
t0



GRV/51



I



RED
INTERIORLIGHTS
12



SYSTEM
Y53
SOLGNDCTRL14
SRN
TPSSIGNAL
5BRNIORG

TRANSMISSION
CONTROL



"



BLU/BLK
MODULE
LEGS)

GRNIGRY
BRN/WHT
9
0

BLU/



E



14

BRNI

I



COMPRESSOR
I
CONTROLRELAV
I
FRONTPOWER
DISTRIBUTION
BOX

SOLENOID

BRN/6LKI



GRNIWHT
2
BRNIORG



"
BRN/ORG
J~G7-
3



"



OFFGRV/VE
'I
L

RE
.'



E%LEGHOS,'
BLU/VEL
"
BLU/YEL
BRN/



SYSTEM



CLOSEDIN
GRV/VEL~(EARLV
PROD)



BLK

R

REVERSE
SMISS



BLK
(LATEPROD)
TRAN
ON



BRN/



EGSA4S310R
POSITION
I



BRN/POSITION



GRY
ELK
1



I



L1
L2
L3
L4



AUTOMATIC
INDICATOR



25

I
r

LIGHT



KICK



P
11
0
1



TRANSMISSION
DOWN



8



II



1
X1070



R
10
00



RANGESWITCH
.ONI



1



SWITCH



I
e6
I



I



I



I



I1
"



BRN



I
I



I)



I



11
0
I
-
MAN
I



"



NCA



I)



CRUISE
CONTROL



II



D
00
D
1
-



_
BRN



B



3
0011
PROGRAM
SWITCH



RNI



STARTER
RELAY



MODULE



ON-BOARD



2



1



0



1



1
1



(TEMPOMA7)
COMPUTER
(M
-A
L
ULTI-FUNCTION



100
10
88905



G201



OLOOKI

DATA
LINK
CONNECTOR
15
W~
20,
WHT/vI0

COMPUTER
DATA
LINESSVSTEM
WHTT/EEL
I/

15
-GRV/B~RN~
I~
EGS
WARNINGLPI~
I
FUEL
CONSUMPTIO~
21
W=

INTRUMENTCLUTTER
%1RBLK
BRN
1
V
GHIFTLKSOL
VE
IO
L/BLU



BRN
AUTO
MODE
SIG

4
BRN/
GRY



6723
J-
IGTIMING
INT
SOLENOID
VALVE1
BLU/REO
BLD
EXTERIOR



oRG
>s



III(III



111111



(
U/RELIGHTS



SOLE
NOIO
22
"
--
"
-
"
"""



SYSTEM
"
(NOT



I
VALVE2
GRRNGSIGL3
6
BLU/WH7



Xfi9
USED)



GRN



8



NCA

WHT/BLK



BLU/RED(



II
I
1



-~
MEAS
SIG
(FL)
A-PPOGIND
10
YEL/BLU



"



VELIBLU



23



I



HYDRAULIC
I
11
BRN/GRN



n9
(NOT



PRESSURE
FLPMPRLYCTRL



4
USED)



REGULATOR
M-PROGIND
12
VEL/WHT



RED



9
I
NCA
TKD
DATA
LK13
WHT/VIO



GRV



1



NOA
UTPUTSPO(-)
14
BLK



---



----



--



---------



--------



-



-



O
SWTESTSIG
5BRN/GRY
T



"
BRNIGRY

,
1fi



BRN/
I



VI
I
I
III



III

O



I



BAND
BK



SOLEN010
2i,
NCA
17
CLR
OILTEMPSIG
1&
NCASPDSENSSHDGND



1
0S
BRN
2
YEL



III
OUTPUT
SPD
(+)
1BLK/BLU
~-
AID
COMP
ON
22
BLK
OILTPSIG(+)
3B~2



LU/BLK
GRRNG
SIG
L14
~BW
j2
HT/VEL
RxD
DATA
LK
126
BRN/BLK
GRRNGSIGL2
~~

BATTERYVOLT



6R
/
2



ED
FAULTINDSIG



0
G
,2



FY
I
BRN
30
GEV/VEL
KICK-DOWNS
IG
MANMODESIG
I1
V
,3



/u321
~38RN/WHT
GRRNGSIGL4
S-FROG
BUTT
ON



734
VE
}
L/GRN
5
BRN/VIO
SHIFTLKGND
GND
e36
BR~
/
ORG
VOLTSUPPLY
7
R
~3
/
TCCSOLCTRL
l
&
BL
~
UB
B~



LU/RED
BK
PDL
POSIT
.
00
F~
HYD
CTRL
(+)
HVDCTRLI-)
41
G}~
'42
SOLVAL2CTRL
BANDSOLCTRL
'487
SOLVALICTRLI~
~
X49
Ipso

P
3
SOLGNDCTRL



4B/5



RN
TPSSIGNAL
I
5BRNIORG

51
/
P2

WHT/

GRY
3_,~_
_
BRAKE



TORQUE
LIGHT



CONVERTER
r
(SWITCH



CLUTCH
I



SOLENOID
I
_
~J



VALVE
BLU
7{
NCA
4



BRN
&
NCA
BFNj



OIL
TEMPERATUREBRN(



SENSOR
G200
J-



SILK



3



NCA
CLR
4
NCA
XflS21
SPEED
Y-1
NCASENSOR
BLK
2
NCA

X651fi
TRANSMISSIOI
VALVE
UNIT
"



BRNIGRN



1
r
_
-
-
-
SRN/ORG
11
IFLPMPRLVCTRL



I
WHT/BLKSf



ION-BOARD



WHT/BLK
17IDKV



I(



COMPUTER



BLKIBLU
48
I
PUELCONSUMPTION
I
A/CCOMPDT
RL



I
BRNIGRY



B4
II



~
IIGNTIMINGINT
I
BRN(



BRN/BLK
65

T

I



-(ID=IVENMODUE(DME)

VIO
NCA
SHIFTLOC



~
K

VIO



1
(0-a



II

UTPUT
GRVIREO
2



J
DIMMER
1III
rO
_
_
_
GRYT
"



RED



INTERIOR
LIGHTS
SYSTEM

Transmission
Electronics

1993-94
318i,
318iC
&
318is

HOTINRUN



HOT
IN
RUN



HOT
INADDY,
RUNHOTATALL



&START&START&START
TIMES



~-
-



_-



FRONTPOWER
r
-
[
IB+



FS
FUSE



FUSE
F2



F46
DISTRIBUTIQN00X



5
-
BRNIGRN
~
I
PU
O
NICTION



US
E
I



I
F26



8



I



--
I

LJ



L
1
__SA



1
--J



i
FUELPUMPRELAY
"
-
Y
--
-
16



X19077



32



X14416



5
BLK/BLU



I
GRN/I
GRN/
VIO/VELr



r5
--
REO



WHT



GRY



"



I



COMPRESSOR
I
"
1



VIO/VEL
I



i



CONTROLRELAYW



_
/CCM



W/OCCM
,
qED/WHT


_RED/WHT(



S
r_
-
II
VEL



VEL
_
BRAKE



BRAKE
r
(LIGHT
I
I~+
'LIGHT
.
iSWITCH



1
/
WIT(

RE
V
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