Engine management wiring BMW 318i 1992 E36 User Guide

0013ZIM
Fig
.
42
.
Engine
control
module
(ECM)
located
in
compartment
in
right-rearof
engine
compartment
(arrow)
.

NOTE-

Replacement
ECMs
must
be
coded
with
application
in-
formation
(Le
.
engine
code,
transmission
type,
etc
.)
pri-
or
to
installation
.
Consult
an
authorized
BMW
dealer
before
replacing
the
ECM
.

ECM
pin
assignments
are
given
in
Tables
h
through
Table
I.
This
information
can
be
helpful
when
diagnosing
faultsto
or
from
the
ECM
.
If
al¡
inputs
and
wiring
are
OK
butoperational
problems
still
exist,
the
ECM
itself
may
be
faulty
.

Fig
.
43
.
ECM
pin
numbers
as
seen
from
back
of
ECM
connector
.

FUEL
INJECTION



130-
2
7

Generally,
absence
of
voltage
or
continuity
means
there
is
a
wiring
or
connector
problem
.
Test
results
with
incorrect
values
do
notnecessarily
mean
that
a
component
is
faulty
:
Check
for
loose,
broken
or
corroded
connections
and
wiring
before
re-
placing
components
.
If
the
results
are
still
incorrect,
test
the
component
itself
.
For
engine
management
system
electrical
schematics,
see
Electrical
Wiring
Diagrams
.

CAUTION-

Always
waitat
least
40
seconds
after
tuniing
off
the
ignition
before
removing
the
connector
from
the
engine
control
module
(ECM)
.
If
the
connec-
tor
is
removed
before
this
time,
residual
power
in
the
system
relay
may
damage
the
ECM
.

"
Always
connector
disconnect
the
control
module
connector
and
meter
probes
with
the
ignitionoff
.

When
making
checks
at
the
ECM
itself,
a
breakout
box
should
be
used
to
allow
tests
to
be
made
with
the
connector
attached
to
the
ECM
.
This
also
prevents
damage
tothe
small
termínals
in
the
connector
.
As
an
alternative,
theharness
con-
nector
housing
can
be
separated
so
that
electrical
checks
can
be
made
from
the
back
of
the
connector
.
ECM
pin
numbering
is
shown
in
Fig
.
43
.

NOTE
-

On
cars
with
tractioncontrol,
do
not
confuse
the
throttle
position
sensor
on
the
main
throttle
body
with
the
throt-
tle
position
switch
on
the
secondary
throttle
body
.

27
Lb
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22
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1
>I-
0013211

ECM
PIN
ASSIGNMENTS

GENERAL

This
section
contains
wiring
diagrams
for
1992
through

1998
BMW
3
Series
models
.

WARNING
-

On
cars
equipped
with
airbags,
special
precautions
apply
to
any
electrical
testing
or
repair
.
The
airbag
unit
is
an
explosive
device
and
must
be
handled
with
exterme
care
.
Before
starting
any
work
onan
airbag
equipped
car,
refer
to
the
warnings
and
cau-
tions
in
720
Seatbelts
and
721
Airbag
Systems
(SRS)
.

NOTE-

The
"



gear
position/neutral
safetyswitch
is
also
some-
timesreferred
to
as
the
automatic
transmission
range
switch
.

"
The
EWS
11
system
is
also
sometimes
referred
to
as
the
Driveaway
Protection
System
or
the
electronic
im-
mobilization
system
.

ELECTRICAL
WIRING
DIAGRAMS



ELE-1

Electrical
Wiring
Diagrams

GENERAL
.
.
.
.
.
.
.
.
.
................
.
.
.
ELE-1



Horns



.....
.
.....
.
.
.
....
.
.
.
.
.
...
.
.
ELE-153

Instrument
Panel
.
.
.
.
.
.
..............
ELE-165

ELECTRICAL
WIRING
DIAGRAMS
...
.
.
.
ELE-2



Interior
Lights/Illumination
.............
ELE-211

ABS



..............
.
.
.
.....
.
.....
ELE-117



Lumbar
Control
.
....................
ELE-247

ABS/AST
.............
.
.
.
...
.
.
.
.....
ELE-120



On-Board
Computer
..................
ELE-173

Airbag
(Supplemental
Restraint
System)
..
ELE-140



Park
Ventilation
.
.
.
...........
.
...
.
..
ELE-139

Air
Conditioning
and
Heating
.
.
.
.
.
.
.....
ELE-129



Power
Distribution
......
.
...
.
.
.
.
.
.
.
...
.
ELE-2

Anti-Theft
(Alpine)
..........
.
.
.
...
.
...
ELE-144



Power
Door
Locks
.
.
......
.
.
.
.
.
.
.
.
.
..
ELE-226

Anti-Theft
(EWS
II)
.
........
.
.
.
...
.
...
ELE-150



Power
Mirrors
...
.
.
.
......
.
.
.
.
.
.
.
.
.
..
ELE-241

Body
Computer
Module
.....
.
.....
.
...
ELE-176



Power
Seats
......
.
......
.
.
.
...
.
.
.
..
ELE-243

Charging
System



.
.
................
.
.
.
ELE-67



Power
Sunroof
.
.
.
.
.
.
.
...............
ELE-248

Convertible
Top
.
.
.
.
................
.
.
ELE-253



Power
Windows
.
.
.
.
.
.
.....
.
.........
ELE-231

Cruise
Control
..
.
.
.
...........
.
....
.
.
ELE-112



Radio/Cassette/CD/Speakers
..........
ELE-255

Data
Link
Connector
................
.
.
.
ELE-86



Rear
Window
Defogger
...............
ELE-160

Engine
Cooling
.......
.
.......
.
....
.
.
.
ELE-94



Shift
Interlock
.
.
.
.
.
.
.
.
...............
ELE-110

Engine
Management
...
.
.......
.
....
.
.
.
ELE-70



Starting
....
.
.
.
.
.
...
.
................
ELE-63

Exterior
Lights
........
.
.
.
.
.
.
.
.
.
......
ELE-194



Transmission
Electronics
.
..............
ELE-96
Ground
Distribution
....
.
.
.
.
.
.
.
.
.
.......
ELE-35



Warning
System
:
Chimes
.............
ELE-178

Headlights/Foglights
...
.
.
.
.
.
.
.
.
.
......
ELE-180



Wiper/Washer
.
.....
.
...............
ELE-155

Heated
Seats
........
.
.
.
.
.
.
.
.
.
......
ELE-245

ELECTRICAL
COMPONENT
LOCATIONS

Relayand
fuse
positions,
ground
locations
...........
.
.
.
.
.
.
.
.
.
................
seeRepair
Group
610

CAUTION-

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

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

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

-Always
switch
a
test
meter
to
the
appropiate
func-
tion
and
range
before
making
test
connections
.

"
All-Season
Traction
(AST)
is
also
referred
to
as
ASC
or
ASC+T
.

GENERAL

ELE-70
ELECTRICAL
WIRING
DIAGRAMS

I



02
SENS
SIB
I"7
7
I
02SENSGNDI)
I



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2



BR
,
'IB
BRN/BLU
I
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I
IsCVALVEI}
I



ECM
RELAY
I
EEVALVEI~
I
CVL4IGNCOILI
S7~LK
I



CVL3IGNCOILI
24L
BL1(

I



CVL2IGN
COILI'
B2
~
BLK
I
CVLIIGNCOILI
2
I



GROUNDI
B'=RN
I
GF
.uNDI
),
BRN
I



GROUNOI
3~
BR"
I
RUNIST
GRN
ARTI
S~
ENGINECONTROL
MODULE
(DME)

13B
START



1
GRN
I
DN

OFF
IGNITION
S
WITCH

8727
3

HOTATALLTIMES

UELINJECTION
VALVES

NCA"
=
It,
INCA
SPIN

BRN
GRN
~GRN
OF
N



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GRN

Engine
Management

19921
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(1
of
2)

HOTAT
F4
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I
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RED



RED

FRONT_POWERDISTRIBUTIONBO%
_
_
___
_
_
_
____
_
_
I



ENGINE
CONTROL
MODULE
RELAY



FUEL
PUMP
RELAY

L

ECMFLY
CTRL
1)27



BFN
FP
FLY
CTRL
I
I'



SWORN
02SFLYCTRL
I
37



BRNIGRN



BRN
GRN
DLCI
80
GRNIBLU
RE
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DLCI
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1
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1
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BX
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EVAPORATIVE



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INTAKE
AIR
EMISSION
CONTROL
RESONANCE
VALVE



VALVE



CHANGEOVER
VALVE

8727
4

FRONT
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BOX
FHOTIN



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ELECTRICAL
WIRING
DIAGRAMS
ELE-71

Engine
Management

19921
.8L
(2
of
2)

INTEGRATED
CLIMATE
HEATEDOXYGEN
CRANKSHAFT
CAMSHAFT



REGULATION
SENSOR
POSITION/RPM
POSITION
CONTROLMODULE
SENSOR
SENSOR

I



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BRN/BL
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20
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1



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I



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SERVICE
II
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I
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I
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i
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LK/WHT
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I
B
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I
BRN/B
ICYLI-2KS
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BRN/RED
78



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K5
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GRYIWHTB



59~ITPSINPUT
ITPSSENSOR
G
I,VAFSENSOR
GRY/YEL
41
(
_



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GRY/SLU
14
~
I
INTEMP
SENS
GRYRYIV
~INTEMPSENS

GRYIVIO
4
GRY/BLU
6
GRY/WHT
1

GRYIYEL
2

GRY/BLK
3

GRY/WHT
1
SRN
2
BRN/BLK
3

ENGINECONTROL
MODULE
(OME)

VOLUMEAIR
FLOW
SENSOR

THROTTLE
POSITION
SENSOR

ELE-72
ELECTRICAL
WIRING
DIAGRAMS

8727
5

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BRN/WHT
I



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INJ2I
5
I
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IJ4



BRNIYEL
I
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B
INJD
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BR
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FP
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I
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GRN
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MODULE
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1
30
START
I
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I
L_---_I
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S
WITCH

1112
N3
N4
M5N6

Engine
Management

19922
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(1
of
2)

FUEL
INJECTION
VALVES

117111
1121
1-

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VALVE

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PUMP
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BRN/GRN



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ELECTRICAL
WIRING
DIAGRAMS
ELE-73

Engine
Management

19922
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(2
of
2)

86



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TRANSMISSIONS
SYSTEM

----------
---------



--------
-------
TRANSMISSIONTRANSMISSION
TRANSMISSION
CONTROL



AUTOMATIC
TRANSMISSION
MODULE
(EGS)



RANGE
SW
ITCH

HOT
IN
RUNAND
START
(FRONT
FUSE
pOYfER
I



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ITCH

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ELE-74
ELECTRICAL
WIRING
DIAGRAMS

8727
7

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in
RED
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FUEL
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Engine
Management
1993-951
.8L
(1
of
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FRONTPOWERD_IS_TRI_BU_TIO_NBOX



_
______
I



ENGINE
CO
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MODULE
RELAY



FUEL
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-~
I



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CVL1



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CYL4



A/T
RANGE



TRANSMISSIONCONTROLMODULE
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8727
8

GR

FUEL
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-
-
-
-
-
-
----
-
-
-
-
-
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Engine
Management

1993-951
.8L
(2
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a

ELECTRICAL
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DIAGRAMS
ELE-75

I



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,
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199531811
m
819930NLY

INTEGRATED
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1993-952
.51
(1
of
2)

FUEL
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VALVES

STARTING
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1995
ONLY
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RED

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Engine
Management

1993-95
2
.5L
(2
of
2)

ELECTRICAL
WIRING
DIAGRAMS
ELE-77

HEATEDOXVGEN
CRANKSHAFT
CYL1-3
CYL4-6
SENSOR
POSITION(
KNOCK
KNOCK
-



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/



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64
I
B
IAICSWITCH
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I
BRNIORG
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37



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VALVEPOS
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47
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_
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L-J
B0%141
X
1001

INSTRUMENT
23
1
.



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I



II



II
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I
I
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I
I



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