1998 BMW 318is Electrical Troubleshooting Manual


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Pin Assignments (318is)
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E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
86
AABS signalABS pump motor relay/Hydraulic unit
87ESpeed signalLeft front speed sensor (ABS)
88ESpeed signalRight front speed sensor (ABS)
89ESpeed signalLeft rear speed sensor (ABS)
90ESpeed signalRight rear speed sensor (ABS)
91E/ATxD diagnostic data linkData link connector
92ARight rear speed signalDME module
93Not used
94EASC signalASC switch
95ESlip control system warning lampSlip control module (ASC)
96MGroundGround point
97AASC signalInstrument cluster
X11395
Pin Type Description/Function Connection
1
AADS step motor (+)ADS step motor
2MGroundGround point
3AADS step motor (–)ADS step motor
4EVoltage supplyFuse 38
5AABS signalABS hydraulic unit

X1161
2
X1165
X11393

SLIP CONTROL (ABS/ASC) $%%


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K125
ABS PUMP MOTOR
RELAY, TIMED
21


3450.1-01
.5 RT/BL/GE
32X10018
1 X78
.5 GR/SW/GE
X181
1.5 BL/RT
2X1001720X1001514X1001716X10018
11
2 X78
685X54
692
429 X54
48 X11393
23 X16
32
BRAKE LIGHTS
6325.0
X1164
.5 BR/SW
351333
X1171
2.5 RT/BL/GE
.5 GN/BL/GE
.75 BL/RT.5 GN/BL/GE
A52
SLIP CONTROL
MODULE
(ABS/ASC) S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
2.5 RT/BL/GE
X195
.5 GR/SW/GE
.5 BR/GR 2.5 RT/GN/GE
.5 GR/SW/GE
X1166
K10
ABS RELAYA2w
INSTRUMENT
CLUSTERP90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3
GROUND
DISTRIBUTION
0670.4FUSE DETAILS
0670.3
2.5 RT/BL/GEGROUND
DISTRIBUTION
0670.4
F4615AF215AF1030AF275AF3830A
.5 BL/BR12 X17
X10100.5 BL/BR3450.1-01
V7
ASC DIODE
.5 RT/BL/GE 2.5 RT/BL/GE
21 X10099
1 X10098
.5 BL/BR
FUSE DETAILS
0670.3 FUSE DETAILS
0670.3 FUSE DETAILS
0670.3
2.5 RT/BL/GE
323i, 328i, M3
16
2.5 RT/BL/GE
S29
BRAKE LIGHT
SWITCH
1) NORMAL
STATE
2) BRAKE PEDAL
DEPRESSEDX116
X173
21GROUND
DISTRIBUTION
0670.4
31
WITH EGS

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52 X117134
.5 BR/GR.5 GR/SW/GE
5049X1171
21
.5 BL
2223
X1176
2.5 RT/BL/GE
5
18194231
.75 BR/BL.75 BR/WS1 BR/GN/
GE1 BR/RT.75 BR/GN.75 BR/WS/GE
17183754224087 X1171
12
X1162
1431
.5 BL/GR.5 BL/SW
.5 WS/GE.5 WS/VI
119X1171
20X1176
X1165
2.5 RT/GN/GE
A52
SLIP CONTROL
MODULE
(ABS/ASC)
Y1w
ABS HYDRAULIC
UNIT
3) PUMP MOTOR
SENSOR
6) RIGHT REAR
OUTLET VALVE
7) RIGHT REAR
INLET VALVE
8) LEFT REAR
OUTLET VALVE
9) LEFT REAR
INLET VALVE
10) RIGHT FRONT
OUTLET VALVE
11) RIGHT FRONT
INLET VALVE
12) LEFT FRONT
OUTLET VALVE
13) LEFT FRONT
INLET VALVE
14) PUMP MOTOR
15) SEPARATOR
VA LV E A52
SLIP CONTROL
MODULE
(ABS/ASC)
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4 S123
ABS PEDAL
TRAVEL SENSORRXD TXDDATA LINK
0670.5
SHIELD
16 24 25
.75 BR/
BL/GE.75 BR/
GR/GE1 BR/SW/
GE
36 39 55
3450.1-00
44 .5 BL/BR
17
2.5 RT/BL/GE
3
13 12 11 10 8 9 6 7 153
14
GROUND
DISTRIBUTION
0670.4 GROUND
DISTRIBUTION
0670.4
X1166
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M3

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SLIP CONTROL (ABS/ASC)
5P90
FRONT POWER
DISTRIBUTION BOX F10
30A
.35 GR/RT
F215A
2 1
S6
ASC SWITCH
1) OFF
2) ON
A52
SLIP CONTROL
MODULE
(ABS/ASC)
21
20 X1171
2.5 SW/BR/GE
+
X100942M93
AUXILIARY
THROTTLE
POSITION MOTOR
(ADS)
1 X10094
2.5 SW/GN/GE
–
A52
SLIP CONTROL
MODULE
(ABS/ASC)X521
4 6
X1001227
X117151
2
X521
LIGHT SWITCH
DETAILS
6300.058g
.5 BL/VI
TD
X117141
X1047
ENGINE CONTROL
SYSTEM MS41.1
(6–CYLINDER M52)
1210.17 .5 SW
.5 SW
X2020
A6000
ENGINE CONTROL
MODULE (DME) X6000
.5 SW X8015
.5 SW
TD
X1001520
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
GROUND
DISTRIBUTION
0670.4
36
323i, 328i, M3
X100172
1 X6002
D100
DATA LINK
CONNECTOR.5 SW
15
9
15
.5 WS/GR/GE
.5 BR/RT

SLIP CONTROL (ABS/ASC) $%%


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3048462947114510X1171
.5 GE.5 WS.5 GE.5 GN
1221 X1422121 X143
B2
LEFT FRONT
SPEED SENSOR –
ABSB4
LEFT REAR SPEED
SENSOR – ABSB1
RIGHT FRONT
SPEED SENSOR –
ABSB3
RIGHT REAR
SPEED SENSOR –
ABS
LEFT FRONT
PULSE WHEELA52
SLIP CONTROL
MODULE
(ABS/ASC)
LEFT REAR PULSE
WHEELRIGHT FRONT
PULSE WHEELRIGHT REAR
PULSE WHEEL
31313131
3X114
,..
3X113
,..
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
3131
323i, 328i, M3
W9110
SHIELDW9110
SHIELDW9110
SHIELDW9110
SHIELD

SLIP CONTROL (ABS/ASC)
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3
A52
SLIP CONTROL
MODULE (ABS/ASC)
1) IGNITION CUT–OFF
2) TIMING CONTROL/
INJECTION
CONTROL
R31
AUXILIARY
THROTTLE
POSITION SENSOR 1 X10239
2
X102393
A52
SLIP CONTROL
MODULE
(ABS/ASC)
X850019A8500
TRANSMISSION
CONTROL MODULE
(EGS)
.5 WS/GN/GE
5
.5 WS/RT/GE
A6000
ENGINE CONTROL
MODULE (DME)
23
X11716
4 X69
45
7 25
.5 WS/GR6 4
.5 WS/GNX695 26
.5 WS/GR/GEX1171
42 43
.5 WS/RT .5 WS/BL
.5 WS/RT/GE .5 WS/GR .5 WS/GN .5 WS/GR/GE.5 WS/BR .5 WS/GN/GE
21
82 81 80
323i, 328i, M3
X6000
A7000
TRANSMISSION
CONTROL MODULE
(EGS)
X7000

S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED1X78
1X78
X11395
X11393

SLIP CONTROL (ABS/ASC) $%%


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K125
ABS PUMP MOTOR
RELAY, TIMED


32X10018
1X116
.5 GR/SW/GEX181
1.5 BL/RT
216X1001814X1001720X10015
212X116
692
48 X11393
23 X16
17
BRAKE LIGHTS
6325.0
440.75 BL/RT
A52
SLIP CONTROL
MODULE
(ABS/ASC)
.5 BR/SW 2.5 RT/GN/GE
A2w
INSTRUMENT
CLUSTERP90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
GROUND
DISTRIBUTION
0670.4
F4615AF215AF3830A F275AF1030A
.5 BL/BR12 X17
FUSE DETAILS
0670.3 FUSE DETAILS
0670.3
42
FUSE DETAILS
0670.3
3450.1-06
.35 RT/BL
21
318is
,.#
S29
BRAKE LIGHT
SWITCH
1) NORMAL STATE
2) BRAKE PEDAL
DEPRESSED
X1170
4
8X1170
23 X6255
30
12X603111.5 WS/RT .5 BL/GN
.5 GR/SW .5 GR/BL
R6255
ACCELERATOR
PEDAL POSITION
SENSOR (ASC)
.5 GR/WS1 X6255
3450.1-06 3450.1-063450.1-06
WITH EGS

GROUND
DISTRIBUTION
0670.4
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28 X1170
.5 BR/SW
23 X11765
18194231
.5 BR/BL.75 BR/WS.75 BR/
GN/GE.75 BR/RT.5 BR/GN.5 BR/WS/GE
262524223136 X1170
.35 WS/VI
2
20 X1176
2.5 RT/GN/GE
A52
SLIP CONTROL
MODULE
(ABS/ASC)
Y1
ABS HYDRAULIC
UNIT
1) LEFT FRONT
SOLENOID
VA LV E
2) RIGHT FRONT
SOLENOID
VA LV E
3) LEFT REAR
SOLENOID
VA LV E
4) RIGHT REAR
SOLENOID
VA LV E
14) PUMP MOTOR
15) SEPARATING
VA LV E A52
SLIP CONTROL
MODULE
(ABS/ASC)
GROUND
DISTRIBUTION
0670.4TXD
16 24 25
.5 BR/
BL/GE.5 BR/GR/
GE.75 BR/SW/
GE
29 27 22
17
1 1 2 2 3 3 4 4 15
14
53115
3450.1-05X1170
X1541
.35 RT/BL .35 RT/BL
.35 RT/BL.5 RT/GN/GE
2.5 RT/GN/GE 2.5 RT/BL/GE
DATA LINK
0670.5 X11284
X11395
9
.5 GR/WS
10 X6031
.5 WS/BR
X1170X11395
GROUND
DISTRIBUTION
0670.4
,.#
3
GROUND
DISTRIBUTION
0670.4X1170
,..
41
GROUND
DISTRIBUTION
0670.419

SLIP CONTROL (ABS/ASC)318is
3450.1-05 3450.1-053450.1-05
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