Fig
.
8
.
Airbag
crash
sensor
mountingscrews
(arrows)
on
early
cars
.
Note
Torx
screws
with
anti-tamper
pin
in
screw-head
.
ZAE
control
module,
replacing
NOTE-
Some
versions
of
early
ZAE
control
modules
are
no
longer
available
from
BMW
.
When
replacing
control
modules
on
cars
built
between
September
1993
and
June
1994,
consulta
BMW
parts
department
for
the
lat-
est
information
on
retrofitting
the
later
module
.
3
.
Remove
orange
SRS
connector
from
its
holder
and
carefully
separate
connector
.
Refer
to
Fig
.
7
.
1
.
Disconnect
negative
(-)
cable
from
battery
and
cover
negative
terminalwith
insulating
material
.
4
.
Working
behind
steering
wheel,
completely
loosen
Torx
screws
(T30)
while
holdingairbag
in
place
.
See
Fig
.
9
.
2
.
Lift
rearseat
cushion
.
Unplug
harness
connectors
and
Support
airbag
unit
toprevent
it
from
falling
out
.
remove
ZAE
airbag
control
module,
which
is
bolted
to
top
of
driveshaft
tunnel
.
3
.
Installation
is
reverse
of
removal
.
Front
side-impact
airbag
crash
sensor,
removing
and
installing
1
.
Disconnect
negative
(-)
cable
from
battery
and
cover
negative
terminal
with
insulating
material
.
2
.
Remove
front
seat
.
See520
Seats
.
3
.
Convertible
:
remove
rear
seat
4
.
Remove
plastic
door
sill
trim
.
5
.
Fold
up
carpet
in
back
of
front
seat
.
6
.
Pull
off
connector
from
crash
sensor,
which
is
located
under
rugnext
to
door
si¡¡
.
7
.
Remove
sensorby
removing
screws
.
Note
direction
ar-
row
before
removing
sensor
.
8
.
Installation
is
reverse
of
removal,noting
direction
arrow
on
sensor
.
AIRBAGS
AIRBAG
SYSTEM
(SRS)
721-
5
Driver
side
airbag,
removing
and
installing
1
.
Disconnect
negative
(-)
cable
from
battery
and
cover
negative
terminal
with
insulating
material
.
WARNING
-
On
cars
with
ZAE
system
:
If
theairbag
system
has
detected
a
fault
(SRS
indicator
illuminated),
a
wait-
ing
period
ofat
least
ten
minutes
must
be
observed
before
removing
the
airbag
from
the
steering
wheel
.
This
will
allow
the
system
capacitor
to
discharge,
re-
ducing
the
possibility
of
a
trigger
pulsebeinggener-
ated
to
the
airbag
.
CAUTION-
Prior
to
disconnecting
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
on
page
vi¡¡
.
2
.
Remove
lower
steering
column
trim
mounting
screw
andremove
lower
trim
.
Refer
to
Fig
.
6
.
Fig
.
9
.
Driver
sideairbag
unit
mounting
screws
(arrows)
.
0011893
AIRBAGS
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
lICAL
WIRING
DIAG
Power
Di
:
1994-95
Excep
~A
FROMFRONTPOWER
I
~+
DISTRIBUTION
BOX
(DIAGRAM
10F5)
_
------
~~
I
5
IGNITION
BLKIVEL
O
(OR
GFN/BLK)TO
FUSE
F16
N
(DIAGRAM
3
OF
5)
TO
FUSE
F28
ORN
NOT
USED
(DI
F
USE
F2TO
FUSE
F24
V
I
USE
P
GRN
II
(DIAGRAM30F5)
STARTER
IMMOBILIZATION
>
>
RELAY
15
S(1994)
ELECTRONIC
I
I
(7
O
IM
MOB
LIZ
PCONTROL
I
I
I
I
5
B
3
No
DULE(EWS11)__
_
_
(1995)
I
I
I
I
I
I
INSTRUMENT
HORN
RELAY
I
I
I
I
I
I
CLUSTER
INSTRUMENT
BLOWER
RELAY
BODVELECTRONICS
CLUSTER
CONTROLMODULE
(ZKE11)
(1894)
.
T
TOFUSEF45
(DIAGRAM
3015)
U
TOFUSEF46
(DIAGRAM
3
OF
5)
58
3
3
3
3
3
3
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
ENGINECONTROL
IGNITION
IGNITIONIGNITIONIGNITIONIGNITIONIGNITION
MODULE(DME)
coll
.,
CO
L12
CO
L13
CO
ILN4
Co
ILk5
CO
L#6
(IFEOUIPPED)
(IF
EQUIPPED)
VIOVIO
23
25
122>7t
..
.111
I
~~~
FRONT
POWER
I
FUSE
FUSE
/
11
FUSE
I
DISTRIBUTION
BOX
.
.
.
....
.
.
.
..
.
.
.
.
.
.
.
.
.
.
..
...
.
...
-----------------
15A
---
2424
26
21
3p
o
z
VIO/l
¢o
~
W
HT
>
>
VIOIWHT
H
5
1
t
VIOIWHT
"3
m
I
I
II1
T
3
4
>_
>
>
I
_I
_I_
II
I
I
I
I
23
5
4
SP
SCONTROL
ROLLOVER
I
I
I
(
I
I
I
I
-
I
I
I
I
I
I
MODULE
SENSOR
I
_
I
I
-
I
I
-
I
I
_
I
GLOVEBOX
I
I
II
II
(LATE
LIGHT
I
-I
_
I
I
_
I
PRODUCTION)
FRONTDOME/
ANTI
THEFT
RIGHTMAKEUP
BODVELECTRONICS
MAP
LIGHT
CONTROLMODULE
MIRRORLIGHT
CONTROLMODULE
WIPER/WASHER
RADIO
TWINRELA'
ASSEMBLY
(ZKEIV)
MODULE
MODULE
(CANADA)
(CANADA)
VIO/WHT
>
>
>~
>
>
>
mO3
8
5
1
3
8
>
I
I
I
I
I
I
I
I
I
I
I
1
I
II
I
I
I
I
I
I
I
I
I
1
I
I
I
LEFTMAXEUP
CONVERTIBLE
TOP
TELEPHONE
SEAT
SWITCH
WIPER/WASHER
WASHERPUMP
MIRROR
LIGHT
CONTROL
MODULE
TRANSCEIVER
OCCUPANCY
SPATIAL
SOUND
MODULE
(USA)
DETECTOR
(1995)
(USA)
8317
3
ELE-12
ELECTRICAL
WIRING
DIAGRAMS
------------------------------------------------
I
FUSE
FUSE
F6
F7
Power
Distribution
1994-95
Except
318ti
(4
of
5)
T
T
_
°
l
_
8
1
_1)
28
,k
_31
_
1
~
3
h
181
'.
I
.
I
I
I
I
I
I
I
I
I
I
I
i
I
i
I
-
i
l
i
I
i
F-
I
I
I
i
RED
"~
FROM
~IFRONTPOWER
DISTRIBUTION
BOX
(DIAGRAM
1
OF
5)
FRONTPOWER
I
DISTRIBUTIONBOX
FUSE
FUSE
FB
F9
15A
20A
I
20A
SA
__-_____
W_
--
W
12
14
16
18r
20
REDISLU
I
I
I
I
I
II
I
I
I
I
I
I
I
I
II
I
I
I
I
I
I
I
sI
z
I
_I
L
_I
!
_I
!
_I
!
_I
L
_I
--I
L
-I
L
-I
L-1
!
_I
L-1
FUSE
310
I
30A
DEFOGGERDOORDOORDOORDOOR
LOCK
TOPCONTROL
LIDLID
TOPSTORAGE
ELECTRONICS
RELAY
I
I
I
I
RELAY
LOCKLOOK
LOCK
LOCK
MOTORMODULE
MACRO-
RELAY
LIDLOCK
CONTROLMODULE
I
-
I
I
_
I
SWITCH
SWITCH
MOTOR
MOTOR
SWITCH
MOTOR
(ZKFIV)
11
_
_1
151
31
I
i
I
I
I
I
I
I
I
II
I
I
I
I
I
I
I
I
I
IHKR
INTEGRATED
CLIMATE
CHIME
MULTI-
INSTRUMENT
CONTROL
RECIRCULATION
MODULE
FUNCTION
CLUSTER
PANEL
CONTROLMODULE
CLOCK
_____-__________________-____________-__~FSONTPOWER
I
FROM
I
DISTRIBUTION
BOX
R
FUSE
I
FUSE
FUSE
FUSE
F34
I
F31
F32
F33
(DIAGRAM
II
SA
30A
I
OA
4OF5)
L"____________________________"_______J
G203,'
CRASH
HAZARD
CENTRAL
BODY
WIPER
WIPER/
LIGHT
RIGHTPARK/
ABSPUMP
CONVERTIBLE
CONTROLFLASHER
LOCKING
ELECTRONICSRELAY
WASHER
SWITCH
LICENSEPLATE
MOTORRELAYTOPCONTROLMODULE
RELAY
MODULE
CONTROLMODULE
MODULE
(USA)
LIGHTRELAY
MODULE
(ZKE
IV)
(CANADA)
(1995)
83175
(1994)
RADIO
HIFI
AMPLIFIER
RED/WH
I
--,
III
--,
II
III
I
I
I
I
I
I
I
I
I
I
I
I
L
_I
L
_I
L
_I
L
_)
L
_I
LIGHT
CHARGING
LEFTPARK
FRONTDOME/
LEFT
POWER
SWITCH
SOCKET
LIGHTRFLAY
MAP
LIGHT
WINDOW
(CANADA)
ASSEMBLY
MODULE
(1994)
FROM
RED
RED/WIT
FRONTPOWER
F
DISTRIBUTION
BOX
RED/W
HT
(DIAGRAM10F5)
-
3
r_
_F
U_S
E
_R
_____
_______________________-__-
I
PD`N
FONT
1
2
12
4
1670
I
F33
FUSE
FUSE
FUSE
FUSE
FUSE
(DISTRIBUTION
I
(DIAGRAM
F34
F35
F36
F37
F35
(
BOX
I
I
I
I
I
I
I
I
I
__
G
_
5)
__
_
5
___
25_____________
1
.0A
.
.
.
.
3
D
_J
I
I
I
I
I
I
I
1
.
J
REAR
LEFT
RIGHT
LEFT
RIGHT
TRUNK
CONVERTIBLE
TRUNK
TRUNK
CONVERTIBLE
BODYHORN
I
I
I
I
L
_I
L
_I
L
_I
!
___I
TRUNK
CD
BODY
TELEPHONE
COMPARTMENT
CHANGER
ELECTRONICS
TRANSCEIVER
LIGHT
CONTROLMODULE
(ZKE
IV)
ELE-16
ELECTRICAL
WIRING
DIAGRAMS
88978
TO
FUSE
F16
yDIAGRAM
4
OF
5)
70FU
SEF28
K
GRN
(DIAGRAM
4OF5)
___
--------
_---------------------
______________
I
IGNITION
I
SWITCH
I
_
_
_-_-__-
-----------
I
OFF
START
OFF
START
OFF
START
F,
START
FROM
FRONT
POWER
r
<
DISTRIBUTION
BOX
(DIAGRAM
2OF5)
=OC---U-
-_-_---_-__-ACC--RU=
____CC_CC--R=N-
CC-PUN
Power
Distribution
1996-97
Except
318ti
(3
of
5)
ELECTRONICIMMOBLIZER
CONTROL
MODULE
(EWS11)
NOTUSED
2_
.
15
t
I
I
II
II
F-,
II
II
I
I
II
I
I
I
I
I
-I
L-1
INSTRUMENT
HORN
RELAY
ENGINECONTROL
UN
LOADER
INSTRUMENT
BLOWERRELAY
CLUSTER
No
DULE(DME)
RELAY
CLUSTER
°_
(1996)
-----
-------
1
1'
--
FRONTPOWER
I
M
TO
1111111
IDISDISTRIBUTION
BOX
(DIAGRAM
3
OF5)
II
FUSE
FUSE
USE
I
1'44
F43
42
I
!
'________________________________
5A
~
_________________
5=
el
231
51
41
51
51
41
1
J
1
2
J
1
2
J
1
5~
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1
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.
1
1
1
CE
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TER
I
I
.+
.
i
I
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I
.
1
I
.
1
1
1
1
1
I
I
II
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I
I
I
I
CONSOLE
TELEPHONE
GLOVE
BOX
I
-
.
I
I
-
I
I
-)
I
-
I
I
-
I
CONNECTOR
LIGHT
(1987)
WIPER/
WIPER/
RADIO
TWIN
RELAY
WASHERWASHER
WASHER
MODULE
PUMPMODULE
MODULE
(1996
CANADA)
(1996
CANADA)
SEAT
RIGHTSIDE
LEFT
SIDE
SRS
ROLLOVER
OCCUPANCY
IMPACTIMPACT
CONTROLSENSOR
DETECTOR
SENSORSENSOR
MODULE
(1997)(1997)(1997)
O~
31
1~
~
1
31
11
51
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
LUG
AGE
I
I
II
II
I
I
II
I
I
II
II
I
I
COMPARTMENT
TELEPHONE
CONNECTOR
LEF7MAKEUP
CONVERTIBLETOP
TELEPHONE
SEAT
SWITCH
FRONTDOME/
ANTI-THEFT
RIGHTMAKEUP
REAR
(1997)
MI
PROFLIGHT
CONTROLMODULE
TRANSCEIVER
OCCUPANCY
SPATIALSOUND
MAPLIGHT
CONTROLMODULE
MIRROR
LIGHT
INTERIOR
(1996)
DETECTOR
ASSEMBLY
(199fi)
FROMFISE
141
---
(DIAGRAM
30F5)
M
________--_--_________________-_----------------
FRONTPOWER
DISTRIBUTIONBOX
(
FUSE
FUSE
1I
F45
F4fi
I
'S
7
.5A--______________-________________-______
___
30Y
32Y
I
i
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,I
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,I
i
I
-
F
-
,
I-
ON-BOAR
CHECK
WIPER
WIPER
STARTER
TRANSMITTER
INSTRUMENT
BRAKELIGHT
CRUISECONTROL
CRUISECONTROL
TRANSMITTER
COMPUTER
CONTROL
RELAY
MOTOR
IMMOBILIZATION
MODULE
CLUSTER
SWITCH
MODULE
SWITCH
MODULE
MODULE
(1996)
RELAY
SWITCH
(1996)
(1998)
(1997)
0
TALINK
CONNECTOR
ELE-18
ELECTRICAL
WIRING
DIAGRAMS
RED
FROM
RED
FROM
D
FRONT
POWER
~H
FRONTPOWER
DISTRIBUTION
BOX
DISTRIBUTION
BOX
(DIAGRAM2OF5)
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(DIAGRAM2OF5)
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------------------------------------------
DISTRIBUTION
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FUSE
F10
I
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I
I
FUSE
L
1995ONLY
FUSE
FUSE
FUSE
I
Ffi
F7
FB
F9
20A
SA
15A20A
'
Tw
q
RED/YEL
Power
Distribution
1996-97
Except
318ti
(5
of
5)
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LEFT
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LEFT
RIGHT
TRUNK
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TRUNK
TRUNK
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BODY
CENTRAL
HORN
RADIO
HIFI
ASS
SLIP
ABS
ABS
DEFOGGER
DOOR
DOOR
DOOR
DOOR
LOCK
TOPCONTROL
LID
LID
TOPSTORAGE
ELECTRONICS
LCOKING
RELAY
AMPLIFIER
CONTROL
CONTROL
RELAY
PUMP
RELAY
LOCKLOCKLOCKLOCK
MOTORMODULE
MICRO-
RELAY
LIDLOCK
CONTROL
SWITCH
MODULE
MODULE
MOTOR
SWITCH
SWITCH
MOTORMOTOR
SWITCH
MOTOR
MODULE
RELAY
(1996)
_________________________________________-]PRONTPOWER
I
FROM
I
DISTRIBUTION
BOX0
FUSEF34
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FUSE
FUSE(DIAGRAM
II
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F32
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ON-BOARD
MULTI-
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CLIMATE
IM
MOB
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MODULE
COMPUTER
FUNCTION
CLUSTER
AS
SSEMBLYCONTROL
CONTROL
(1997)
CLOCK
MODULEMODULE
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F35
F36
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25----------
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315
ALL
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TELEPHONE
CD
FRONT
CANADA
USA
WIASC
W/ASC
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PCoNTROL
ELECTRONICS
RELAY
WASHER
SWITCH
PUMP
CONTROL
CONTROL
MODULE
RELAY
MODULECONTROL
MODULE
(USA)
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MODULE
(1996)
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FUSE
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CONVERTIBLE
TOPCONTROLMODULE
ELECTRICAL
WIRING
DIAGRAMS
ELE-19
Power
Distribution
1998Except
318ti
(1
of
5)
FUEL
PUMP
161
X111010
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BOX
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2
OF
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TOFUSEF16
GGRN
(DIAGRAM
4
OF
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TOFUSEF28
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RAM
4
OF
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SEATBELTDETECTOR
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SYSTEM
SWITCH
SWITCH
SENSOR
SENSOR
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MODULE
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IGNITION
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FROMFRONTPOWER
DISTRIBUTION
BOX
(DIAGRAM
2
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56
ELECTRONICIMMOBLIZER
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2
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(
L)
8
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1
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MODULE
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I
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WIPERI
RADIO
WASHER
BODYELECTRONICS
WASHER
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CONTROL
MODULEMODULE
(ZKE
IV)
61
31
5'
I
I
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I
I
I
I
II
I
I
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I
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I
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I
FI
SOUND
MAPLIGHT
CONTROLMODULE
MIRRORLIGHT
REAR
FEAR
SWTCH
RELAY
ASSEMBLY
INTERIOR
INTERIOR
______
-
-
-
-
-
_____________________________
-_
FRONTPOWER
FROMFUSE
F43
---
I
DISTRIBUTION
BOX
(OIAGRAM30F5)
J
II
FUSE
FUSE
I
F45
146
7
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_
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_
_
_
_
_
_
_
_
_
ELECTRICAL
WIRING
DIAGRAMS
ELE-21
Power
Distribution
1998Except
318ti
(3
of
5)
2B
NOTUSED
0259
231X
7Oat8
5I
4151
51
5
;
4
4
1
2
O
16
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I
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I
I
I
I
I
I
II
I
I
I
I
I
f
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I
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ON-BOARD
CHECK
STARTER
TRANSMITTER
INSTRUMENT
BRAKE
LISHT
COMPUTERCONTROL
IMMOBILIZATION
MODULE
CLUSTER
SWITCH
MODULE
MODULE
SWITCH
---
-
-
------
--
FRONT
POWER
TOFUSEF45
I
DISTRIBUTION
BOX
'DIAGRAM
S
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FUSE
"
FUSE
HORN
RELAY
CRUISECRUISE
CONTROLCONTROL
MODULE
SWITCH
I
I
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II
I
I
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II
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LUGGAGECOMPARTMENT
II
II
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TELEPHONE
CONNECTOR
DATALINK
CONNECTOR