1998 BMW 318ti Electrical Troubleshooting Manual




RADIO/HIFI


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.23 VI
7N9
RADIO
X18521
8
+-
N22
CD CHANGER
.23 GN
6
1
.23 GE1
9.5 BR3
2.23 BL2
10.23 WS10
4.23 SW5
3.23 RT9
6.23 GR4
7
TR8
5 TR
+-
LEFT RIGHT
X18520
LEFT RIGHT
 


PROVISIONS



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6561.0 CELLULAR TELEPHONE (PROVISIONS)
FUSE DETAILS
0670.3 6
1F33
10A
4X322N9
RADIO .5 WS/BR
1
 

6
7X400
.35 WS/BR.5 WS/BRA2w
INSTRUMENT
CLUSTER
X557
6 X17
.5 BL
2
FUSE DETAILS
0670.3 X10018
26
5 X400
F435A
G6509
GENERATOR
12 X600225 X20
X7509
1.5 BL
X8004
.5 BL
.5 BLD+
.75 BL
D100
DATA LINK
CONNECTOR
X213
.35 BL
3
TELEPHONE CONNECTOR
LUGGAGE COMPARTMENT
MUTEX18126
X14
.35 WS/BR .35 WS/BR
GROUND
DISTRIBUTION
0670.4
, 1.
6
P90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3 6
1F33
10A
FUSE DETAILS
0670.3 X10018
26
5 X13305
F435A
TELEPHONE CONNECTOR
CENTER CONSOLEP90
FRONT POWER
DISTRIBUTION BOX
2
GROUND
DISTRIBUTION
0670.4
,  "
X13305
CDN

X78WITH EGS




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6571.0 CRUISE CONTROL (TEMPOMAT)
FUSE DETAILS
0670.3 X10017
16
5 X511
P90
FRONT POWER
DISTRIBUTION BOX F28
5A
ELECTRONIC
TRANSMISSION
CONTROL
(EGS A4S 270R)
2460.2
.5 BR/SW
F4615A
X10018
32
.5 VI/GE X511
7
 " 1 

'
 
 +
 1 
" 
 
5S3
AUTOMATIC
TRANSMISSION
RANGE SWITCH
0) OFF (LOW)
1) ON (HIGH)
3126
31
X191
.35 BR/SW1 X72
S28
CRUISE CONTROL
SWITCH
0) NORMAL
1) OFF
2) RESUME
3) DECELERATE/SET
4) ACCELERATE/SET
24
31
3
18
312
9
314 X72
20
X22
31
A8
CRUISE CONTROL
MODULE
(TEMPOMAT) .35 BL/WS .35 BL/GN .35 BL/GR.5 VI/GE
.35 BL/SW FUSE DETAILS
0670.3
468
5 EGS A4S 270R
 

1
1 2
2
15S29
BRAKE LIGHT SWITCH
1) NORMAL STATE
2) BRAKE PEDAL
DEPRESSED
BRAKE LIGHTS
6325.0
X116
X116
.35 BL/RT 1.5 BL/RT1.5 VI/GE
X181
L1L2L3L4
01010101
4 3
01 2
01 2
0
31
20
8X16
.35 SW.5 SW
X1047
31A2w
INSTRUMENT
CLUSTER
TD
ENGINE CONTROL
SYSTEM (DME M5.2,
4–CYLINDER M44)
1210.20
X78
S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
WITHOUT EGS




!


CRUISE CONTROL (TEMPOMAT)
10
2 X17
INSTRUMENT
CLUSTER
6211.0
.35 SW/WS
R
TACH315V (15)
2112
X22
X188
.5 SW/WS
31
2A2w
INSTRUMENT
CLUSTER
2) VEHICLE SPEED
OUTPUT
X10010
.5 SW/BL
54 .5 GE/WS3 X70
M25
CRUISE CONTROL
ACTUATOR
(TEMPOMAT)
1) FEEDBACK
POTENTIOMETER
2) CLUTCH A8
CRUISE CONTROL
MODULE
(TEMPOMAT)
.5 RT/BR
GROUND
DISTRIBUTION
0670.4
X10010
X121112 2 X121
S32
CLUTCH SWITCH
1) NORMAL STATE
2) CLUTCH PEDAL
DEPRESSED
GROUND
DISTRIBUTION
0670.4
 

31
13
2
716
11 3
.5 SW/BR .5 SW/GN
GROUND
DISTRIBUTION
0670.41
14 23
.5 BR/OR .5 BR/OR
.35 BL/BR.5 GE/VI
X702

1
2 7
57 X8500
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
.35 GE/BR
14 X69
.35 GE/BR
17
.35 WS/VI
DATA LINK
0670.5
WITH EGS WITHOUT EGS TXD
.35 BR/OR




6575.2 ANTI–THEFT SYSTEM (ALPINE)
 



!



P90
FRONT POWER
DISTRIBUTION BOX
N12w
ANTI–THEFT
CONTROL MODULE
(ALPINE) FUSE DETAILS
0670.3
F435A
2 X13025
3 X1302511
S61y
LUGGAGE
COMPARTMENT
LIGHT SWITCH
1) TRUNK
CLOSED
2) TRUNK OPEN3 X711
LOW–NOISE
MICROPHONE
VI VI
SW SW
LED
X13009
GROUND
DISTRIBUTION
0670.4
ANTENNA
.5 BR/WS
8
2 X65
.5 BL/GN/GE
14X14
N17
CRASH CONTROL
MODULE .5 BL/GN/GE1 2
26 X10018
2 X711
12
1 X13254
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV) .5 BR/RT/GE
.5 BR/RT/GE
X475
.5 BR/RT/GE
10
4 X13253
.5 BL/RT/GE
.5 BL/RT/GE
X450
14 X1659A836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II) .5 BL/RT/GE
4X14
.5 BL/RT/GE
X13006
GROUND
DISTRIBUTION
0670.4
S48
DRIVER’S DOOR
HANDLE SWITCH
1) HANDLE DOWN
2) HANDLE
LIFTED2 X752
1 2
1 X752
X495
GROUND
DISTRIBUTION
0670.4
19 X257
.5 BR/RT/GE

X13254
 







!


N12w
ANTI–THEFT
CONTROL MODULE
(ALPINE)
ANTI–THEFT SYSTEM (ALPINE)
1 21
2 X371
.5 VI/GN/GE
1 X371
1 24
S14
DRIVER’S DOOR
JAMB SWITCH
1) DOOR OPEN
2) DOOR CLOSED 2 X352
.5 BR/GR/GE
X13006X10012
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
.5 BR/GR/GE
GROUND
DISTRIBUTION
0670.4 GROUND
DISTRIBUTION
0670.4 1 X352
2 X13025
26 X10018
F435A
FUSE DETAILS
0670.3P90
FRONT POWER
DISTRIBUTION BOX
X10244
1
2 X10250
F4715A
FUSE DETAILS
0670.3P95
AUXILIARY FUSE
BOX
X13168
9
17 X13253
.5 WS/RT/GE.5 WS/RT/GE
2 .5 BR/GR/GE
A2w
INSTRUMENT
CLUSTER23 .5 BR/GR/GE
X17
3 .5 BR/BL/GE
X13254
1 2X445
5
S13
PASSENGER’S
DOOR JAMB
SWITCH
1) DOOR OPEN
2) DOOR CLOSED 2 X351
.5 BR/BL/GE
X495
.5 BR/BL/GE
GROUND
DISTRIBUTION
0670.4 1 X351
S21w
ENGINE HOOD
SWITCH
1) HOOD OPEN
2) HOOD CLOSED
7
2 X372
1 SW/BL
1 X372
GROUND
DISTRIBUTION
0670.4
X13025
X165
H1w
ANTI–THEFT HORN
(ALPINE)
8 X14
1 SW/BL X443
13 X14
.5 BR/GR/GE

6581.3 BOARD COMPUTER (BC – LOW)

!



B21
ON–BOARD
COMPUTER
TEMPERATURE
SENSOR
31 30
31 31 31
.35 BR/GR
P90
FRONT POWER
DISTRIBUTION BOX
232 X10018
FUSE DETAILS
0670.3
510
911
LIGHT SWITCH
DETAILS
6300.0
X10245
86 X10245
X10010
1 X770
2 X770
GROUND
DISTRIBUTION
0670.4
X10010GROUND
DISTRIBUTION
0670.4
58g
FUSE DETAILS
0670.3
 

.35 WS/VI2.35 WS/GE3
B25y
FUEL TANK
SENSOR II .5 BR/GE7
2 X679
1 X679
15
.5 SW/WS2
X188
INSTRUMENT
CLUSTER
6211.0
X11291
1 X13
B6
FUEL LEVEL
SENSOR 2 X1241
1 X1241
.5 GE15
31
3 X271
.5 BR/SW
.5 BR/GE
1 X271
15
.35 BR/RT1
10 X32
1 X32
X173
GROUND
DISTRIBUTION
0670.4
A2w
INSTRUMENT
CLUSTER
2) VEHICLE
SPEED
OUTPUT 2
X17
.35 SW/WS
.35 GR/RT
A35y
BOARD
COMPUTER
(BC – LOW)
S7
COMBINATION
SWITCH
10) PROGRAM
MODUS 10TXD RXD
DATA LINK
0670.5.5 BR/GE
.5 BR/GE
A2w
INSTRUMENT
CLUSTER
.5 BR/SW.5 BR/SW
X805
INSTRUMENT
CLUSTER
6211.0
31415
.5 WS/SWA6000
ENGINE CONTROL
MODULE (DME)
X6000
24X20
.35 WS/SW
31
F315AF4615A
83
.35 BR/RT
.35 BR




7000.0 COMPONENT LOCATION CHART
:






 !
 

COMP. DESCRIPTION LOCATION7100.0 8500.0
A2w . . INSTRUMENT CLUSTER . . . . . . . . . . . . LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-3

A8 . . . .

CRUISE CONTROL MODULE
(TEMPOMAT) . . . . . . . . . . . . . . . . . . . . .

behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

01-2





A12 . .



SUPPLEMENTAL RESTRAINT
SYSTEM CONTROL MODULE . . . . .


below rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


01-3



A18 . . HIFI AMPLIFIER . . . . . . . . . . . . . . . . . . . . in LH side of luggage compartment behind trim panel . . . . . . . . . . . . . . . . . . 00-2
A35y . BOARD COMPUTER (BC – LOW) . . . . center of dash center console

A36 . .
REAR WIPER/WASHER INTERVAL
CONTROL MODULE . . . . . . . . . . . . . .
in lift gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

02-1



A51 . .
WIPER/WASHER MODULE . . . . . . . . . .
behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
02-3

A52 . .

SLIP CONTROL MODULE (ABS/ASC) .

behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

01-2




A56 . .

TILT/SLIDE SUNROOF CONTROL
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . .
in roof panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

00-3


A64 . . WIPER/WASHER MODULE (LOW II) . . behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02-3

A104 .
BODY ELECTRONICS CONTROL
MODULE (ZKE IV) . . . . . . . . . . . . . . . .
behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

01-1



A107 .
INTEGRATED HEATING– AND
CLIMATE CONTROL MODULE . . . . .
center of dash center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24-2



A110 .
DIGITAL CLOCK . . . . . . . . . . . . . . . . . . . .
center of dash center console



A113 . SEAT OCCUPANCY DETECTOR . . . . . under RH front seat


A202 .

ABS CONTROL MODULE/HYDRAULIC
UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . .
rear LH side of engine compartment back of LH side shock tower




A835 . TRANSMITTER MODULE (EWS II) . . . . LH side of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02-2