1996 BMW 318i Engine hood

GENERAL

E36
cars
are
equipped
with
integrated
automatic
heating

and
air
conditioning
systems
.
Many
of
the
procedures
given
in

this
repair
group
require
that
the
A/C
refrigerant
charge
be

evacuated
using
specialized
equipment
.
See
A/C
System
Warningsand
Cautions
later
in
this
repair
group
.

HEATER
AND
CONTROLS

Blower
motor,
removing
and
installing

NOTE-

On
6-cylinder
cars,
the
plastic
top
enginecover
and
fuel
rail
covermustbe
removed
.
The
fuel
injectorhamess
re-
taining
screws
must
be
removed
and
the
harness
set
aside
.
The
engine
control
module
(ECM)
cover
must
be
removed,
the
control
unit
connectors
unplugged
and
the
harness
pulled
out
of
the
way
.
See
130
Fuel
Injection
.

1
.
Disconnect
negative
(-)
cable
from
battery
.

2
.
Open
hood
.
Unclip
engine
bulkhead
plenum
grille
at

base
of
windshíeld
and
remove
grille
.
See
Fig
.
1
.

HEATING
AND
AIR
CONDITIONING



640-1

640
Heating
and
Air
Conditioning

GENERAL
.
...
.
....
.
.
.
.
.
.
.
.
.
.......
.
.
.
640-1



Heater
andA/C
air
distribution
motor,

replacing(rotary-knob)
.
.
...
.
.
.
.......
.
640-10

HEATER
AND
CONTROLS
.
.....
.
.
.
.
.
.
.640-1



Rear
Window
Defogger
.
.
.



.
.
.
.
.
.
.
...
.
.
.
640-10
Blower
motor,
removing
and
installing
.
.
.
.
.
.
640-1



Rear
Window
Blower
(convertible
models)
.
.640-10

Blowermotor
resistor
pack,
replacing



.
.
.
.
.
.
640-3



AIR
CONDITIONING
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
640-11
Heater
valve,
replacing
...........
.
.
.
.
.
.
.
640-3

Heater
box,
removing
and
installing
.
.
.
.
.
.
.
.
640-4



A/CSystem
Warnings
and
Cautions
.
.
.
.
.
.
:640-11

Heater
core,
replacing
.....
.
.
:
....
.
.
.
.
.
.
.
640-6



A/C
compressor,
replacing
.
.
::.
:
:
.
.
.
.
.
.
.
.640-12

Heater
core
temperature
sensor,
replacing
.
.
640-7



A/C
Compressor
Clutch
.
.
.
.
.
.
.
:
.
.
.
.
.
.
.
.
.
640-13

Heater
andA/C
Control
Head
.
.
....
.
.....
.
640-7



A/C
condenser,
replacing
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
640-14

Heater
andA/C
control
head,
removing



A/C
receiver/drier,
replacing
.
.
.
.
.
.
.
.
.
.
.
.
.
640-15
and
installing
(rotary-knob)
.
.
....
.
......
640-7



A/C
expansion
valve,

Heater
andA/C
control
head,
removing



removing
and
installing
...
.
.....
.
.
.
.
.
.
.
640-16
and
installing
(digital-display)
.
.....
.
.....
640-8



A/C
evaporator,
removing
and
installing
.
.
..
640-17

Heater
andA/C
control
module,removing



A/C
evaporator
temperature
sensor,

and
installing
(rotary-knob)
.
.
...
.
.
.
.
.
.
.
.
640-8



replacing
.
.
.
.
.
.
..............
.
.
.
.
.
..
640-17

Heater
andA/C
control
module,removing



A/C
microfilter,
replacing
......
.
....
.
.
.
..
640-18

and
installing
(digital-display)
.
...
.
.
.
.
.
...
640-8

Sensor
fan
for
interior
temperature,



TABLES

replacing
.
.
.
....
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
640-9



a
.
Blower
Motor
Test
Values
.........
...
.
.
......
640-3

Heater
andA/C
AirDistribution
Motors
.
.
.
.
.
.
640-9



b
.
Heater
Core
Temperature
Sensor
Test
Values
...
.640-7

c
.
Evaporative
Temperature
Sensor
Test
Values
...
640-17

d
.
A/C
System
Fluid
Capacities
(total)
..
..........
640-18

0012527

Fig
.
1
.
Detach
grille
retaining
clips
(arrows)
and
pull
grille
upward
and
out
of
rubbergasket
.

CAUTION-

Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautionsgiven
at
the
front
of
this
manual
onpage
viii
.

HEATER
AND
CONTROLS

ELE-38
ELECTRICAL
WIRING
DIAGRAMS

64869

MULTI-



HEADLIGHT/



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1992-93
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1993
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TRANSMISSION
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POSITION



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SOCKET

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Ground
Distribution

1998Except
318ti
(4
of
4)

LEFT



-
RIGHT
LICENSE



(



)
LICENSE
LIGHT



-
LIGHT

1
FEAR



PEAR
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WINDOW



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DEFOGGER
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521
318,
323,
328
v3

ELECTRICAL
WIRING
DIAGRAMS
ELE-53

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DRIVER'S
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DOORDOOR
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SPATIAL
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ELECTRICAL
WIRING
DIAGRAMS
ELE-55

Ground
Distribution

1995-96
318ti
(2of3)

BE
.

PASSENGER'S



WIPER/



CRUISE



BODY
SEAT
PASSENGER'S
PASSENGER'S



CRASH



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CLUTCH
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RECIRC-
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BLOWER
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REARFRONTTAPE
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FRONT



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ASHTRAY
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LIGHTER
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TELEPHONE
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WINDOW
HEATERHEATER
CONTROL
LIGHT
LIGHT
LIGHTLIGHT
LIGHTER
EJECTBOX
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SWITCHSWITCH
SWITCH
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G201

7

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1

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1
G303

104444

IBRN

Ground
Distribution

1998
318ti
(2
of
3)

BRN
ml
>-
G201

ELECTRICAL
WIRING
DIAGRAMS
ELE-61

WIPER/
CRUISE



BODY
CRASHBOARD
WASHER
CONTROL
ELECTRONICS
CONTROLCOMPUTER
MODULE
ACTUATOR
CONTROL
CLUTCHMODULE



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11)



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F-
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,



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-
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,
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_I



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CONNECTOR



I



_I



I



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FRONT



REAR
BODY
DOME/



FOLDING



WIPER/
DRIVER'S



PASSENGER'S
DRIVER'S
MIRROR
DRIVER'S
ELECTRONICS
MAP



SUNROOF
FOLDING
SUNROOFWASHERMAKEUP
PASSENGER'S
MAKEUP
SIDE
CONTROL
WINDOWCONTROL
READING
LEFT
RIGHT
COMFORT
SUNROOFCONTROL
INTERVAL
MIRROR
WINDOW
MIRRORMIRROR
SWITCH
MOTOR



MODULE
ASSEMBLY
FRONTFRONTRELAY
SWITCH
ASSEMBLY
MODULE
SWITCH



MOTOR



SWITCH
I
I
I
II
I
I
II
I
`°LWELL
GHT
LI
LL
LIGHT



I



I



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I



i



II



I



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-



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I



I



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I



I



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I



I



I



II



I



L-1



L-1



I
_I



I
_I



(

r

)



(



)



!
_I



L
-I



L
-I



L-1



1-1



L-1



!
_I

FRESH
INTEGRATEDCLIMATE



AIR/
HEATING/



GLOVE



TRANSMISSION



CLIMATE
CONTROL



IHKS



RECIRC-



CLIMATE



EVAPORATORTEMPERATURE



Box



ENGINE



POSITION



REAR



CONTROL
BLOWER
SWITCH
CONTROL
ULATION
CONTROL
TEMPERATURE
WHEEL



LIGHT



HAZARD
HOOD
INDICATOR



BLOWER
DEFOGGER
SWITCH
MOTOR
ILLUM
SWITCH
MOTOR
MODULE
SENSOR
SWITCH
SWITCH



SWITCH
SWITCH
LIGHT



MOTOR
SWITCH
ILLUMINATION
I
-
i



1
--
,



1
-
7



1
-
7



I



i



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F
-



F
-,



I



F
-



F-



I
--,
I



II



II



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TELEPHONE
I



II



I



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II



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I
I_I



!
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CONNECTOR
Y
«7

SUPPLEMENTAL
DRIVER'S
PASSENGER'S
DRIVER'S
PASSENGER'S
RESTRAINT
WIPER/
WIPER/



FRONT



POWERPOWER
SEATSEAT



SYSTEM
WASHERWASHER
FRONT
CIGAR
ABC
PROGRAM



WINDOW
WINDOW
HEATERHEATER



CONTROL
SWITCH
MODULE
CIGAR
LIGHTER
SWITCH
SWITCH



SWITCH
SWITCH
SWITCHSWITCH



MODULE

I



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I!_I
I



(-)



I
!_I



I!_I
I



I
!_I



I



I



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!
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I



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!
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I


_I

SPIN
I



I/
-
\
1



I
-1
t



t1
G201



G302



G302



G303

2
BLK/BLU

4
WHT/GRN

8
FED/RY/YEL
HORNRELAY

l
1
REDIGRY/YEL
2
VIOIWHT

11
VICIGRN/YEL
X10244
ANTI-THEFTCONTROL
MODULE

8341
4
6
RED/GRY/YEL

BRN/GRY/YEL
BRN/BLUIYEL
25N/WT
BLK/BLU
_

BLK/
BLU
BRN

ELECTRICAL
WIRING
DIAGRAMS
ELE-147

Anti-Theft

1994
Late
Production

Alpine
System

HOTATALLTIMES



HOT
IN
ACCY
.
RUNAND
START
r
-
~



-,
AUXILIARY
FUSE
BOX



r
~



-1
FRONT
POWER
L



E
J



L



F43
E
J
DISTRIBUTION
BOX
ISA



5A



I

REDIGRY/
I
VIO/
YEL



WHT

REDIGRY/I



VIO/
YEL



WHT

G312
G-

(4
DOOR)
G203
(2
DOOR)

BRN
/



BRN
I



BRN
/



BRN
BRN

SRNIGRY/
EL
22~
BRNIBLU/EL



3
I



IBRNI_BRNI_



W~
I



I
X13254
I



I
I



I
WHTT/SRN
22
i
I
I
VTOIGRNI
-



YI



I
X1D
1B2
L
--
I
BODY
ELECTRONICS
CONTROL
MODULE
(ZKE
IV)

VIOIGRN/
EL



2
~I
i
ON-BOARD
COMPUTER
BRN
/GYELI
BRN/
VEL~



WHTI



WHTI
VIO/G
YELI
VIO/G
YELI

ANT
1-J
,
[7]
DRIVERS
[7]

PASSENGERS

LEFT



///111/
...
RIGHT
JJ11/
~~
..
RADIO



..
.+1+11/i
..
ENGINE
FT



DOOR



DOOR



REAR



REAR



MICRO



HOOD
HORN



SWITCH



a
SWITCH



CONTACT
~
CONTACT



SWITCH
't
DOOR



SWITCHTHE

ELE-148
ELECTRICAL
WIRING
DIAGRAMS

HORN
RELAY

83388

I



Z
BL_

44



W
H~

8
RED/GRY/YEL

6
RED/GRY/YE

Anti-Theft

1995-97
Except
318ti

Alpine
System

HOT
AT
ALL
TIMES



HOT
IN
ACCY,
RUNAND
START
r



-1
AUXILIARYFUSEBOX



r



-,
FRONTPOWER
I



FUSE



I



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E



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DISTRIBUTION
BOX
I
1-
I



I
SA
L



_
.
J
PEO/GPY/
YEL

REO/G
YELI



WH7I

I



SWITCH
DHANDLE

BLK/
BLU
BRN
I



BRN

BRN/WHT

TRUNK
LIGHT
SWITCH

4
BRN/GRY/YEL
~~ll
6
BRN/BLU/YEL
-

71~
l!fi



BRN/WHT

!~
7
BLK/BLU
(
BLU/GRN/YEL
9
WHT/RED/YEL
10
BLUIPED/YEL
11
BRN/WHT
12
BRN/REDIYEL
X
1+02s
~
(
1



VIO/GRN/YEL

LOW-NOISE



A,



'k
MICROPHONE



ANTI-



DRIVERS



PASSENGERS
LEFT



RIGHT



RADIO



ENGINE
THEFT
DOOR



DOOR



REAR



REAR



MICROSWITCH



HOODHORN



JAMB



JAMB



DOOR



DOOR



SWITCHSWITCHSWITCH



CONTACT
CONTACT

SRN
I



BRN

(4
DOOR)
G203
(2
DOOR)

BRN
I



SPIN

BRNI



SPIN
I

11
G200



G200

BLU/REDIYEL

1
G200

BLUIGRN/YEL



2
,I



I

---
I
CRASH
CONTROL
MODULE

i
--
1
SLUIREDIYE
!
I
WHT/RED/YEL
17



I
X132B
3
I



1

BRNIRED/YEL
1
.BRN/GRY/YEL
2
BRN/BLU/YEL
3
BRN/WHT
6

WHT/GRN
7
VIOIGRN/YEL
17

VIO/GRN/YEL
2




I
X
.14192
L
--I
BODYELECTRONICS
CONTROL
MODULE
(2KE
IV)

,I
L
--I
ON-BOAFOCOMPUTER

ELE-152
ELECTRICAL
WIRING
DIAGRAMS

104754

LOW-NOISE
MICROPHONE

ANTI-THEFT
CONTROL
MODULE

NCA
NCA

BL
K

VI
0

11
LED



CRASH
CONTROL
MODULE

NCA

NCAi~1
.RED/GRY/YEL

2
VIO/WHT

3
BAN



"
BAN

LCD
4
BRN/GRY/YEL
l~lJ



l
5
BRN/BLU/YEL

77
BL

88



8L~
U/GRN/YEL

LCD
9~W

10



BL
S
U/RED/YEL

11
B
RA

12
BREL

10244

ANTENNA

VIO/GRN/YEL

Anti-Theft
Forced
Entry

1998
318ti
-

HOT
AT



HOT
IN
RUN,
ALL
TIMES



AC
CY
AND
START

FUSE



-1
AUXILIARY



F
1
FUSE



-1
FRONT
POWER

F47



I
FUSE
BOX



I



F43



I
DISTRIBUTION
BOX

15A
I

_J
2



26

RED/GAY/



VIO/
YEL



WHT



BLU/GRN/YEL
2



I

I--

RED/GRY/
/



VIOL

BLK/
I



VIO/GRN/
I



BRN/
I



BRN/GRY/
I



BRN/BLU/
BLU



YEL



WHT



YEL



YEL

BRN/GRY/YEL
23

BAN
I



BAN
I



BAN
I



BAN
BAN
I



BAN
I



BAN
I



BAN
I
-
97



A
L



47

G100



G201



G404



G201

INSTRUMENT
CLUSTER

BLU/RED/YEL
14
j



I

ELECTRONIC
IMMOBILITER
CONTROL
MODULE

BRN/GRY/YEL
2
I
I



I
BRN/BI
/YEL
3~I



I
X
13254
I



I

I



I
I



I
WHT/RED/YEL
17
I

BLU/RED/YEL
4
I



I
X13253
I



I
BRNIRED



I



I

BODY
ELECTRONICS
CONTROL
MODULE
(ZKE
IV)

ANTI-



ENGINE
THEFT



HOOD
HORN



I
SWITCH
SWITCH



~
JAMB



JAMB
I



SWITCH



SWITCH
-