BMW 323i 1999 E36 Electrical Troubleshooting Manual





Pin Assignments

323i, 328i, M3





E = Input, A = Output, M = Ground
X1171
Pin Type Description/Function Connection
1
MGroundGround
2EBattery voltageABS relay
3MGroundGround
4EIgnition cut-off signalDME module
5AEML signalDME module
6ATransmission influenceTransmission control module
7E/ATxD signalDiagnostic link
8ARxD signalDiagnostic link
9Not used
10ASensor groundABS speed sensor rear right
11ASensor groundABS speed sensor front right
12Not used
13AABS power protection relayABS power protection relay
14EPedal travel sensorPedal travel sensor
15ARight rear speed signalDME module
16EPlus supplyABS relay
17ASolenoid valve signal left rear inletABS hydraulic unit
18ASolenoid valve signal left rear outletABS hydraulic unit
19MGroundGround
20AADS step motor (–)ADS step motor
21AADS step motor (+)ADS step motor
22ASolenoid valve signal right front inletABS hydraulic unit
23EASC throttle flap potentiometer (–)ASC throttle flap motor potentiometer
24Not used
25EIdle speed signalDME module
26AThrottle flap positionDME module
27EASC switch signalASC witch
28Not used
29ASensor groundABS speed sensor rear left
30ASensor groundABS speed sensor front left




Pin Assignments

323i, 328i, M3





E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
31
EPedal travel sensorPedal travel sensor
32EBrake signalBrake light switch
33EPlus supplyABS relay
34AABS lamp controlInstrument cluster
35EIgnition signalFuse 21
36ASeparator valveABS hydraulic unit
37ASolenoid valve signal right front outletABS hydraulic unit
38Not used
39ARight rear inlet valveABS hydraulic unit
40ASolenoid valve signal left front inletABS hydraulic unit
41ESpeed signalDME module
42EASC throttle flap potentiometer (+)ASC throttle flap potentiometer
43EASC throttle flap signalASC throttle flap potentiometer
44AASC lamp controlInstrument cluster
45ESpeed sensor signal rear rightSpeed sensor rear right
46ESpeed sensor signal rear leftSpeed sensor rear left
47ESpeed sensor signal front rightSpeed sensor front right
48ESpeed sensor signal front leftSpeed sensor front left
49EPump motor sensor signalABS hydraulic unit
50EShield pump motor sensorABS hydraulic unit
51EPlus supplyFront power distribution box
52AABS pump motor relayABS pump motor relay
53Not used
54ASolenoid valve signal left front outletABS hydraulic unit
55ARight rear outlet valveABS hydraulic unit




Pin Assignments

318i





E = Input, A = Output, M = Ground
X1170
Pin Type Description/Function Connection
56
ARight rear inlet valveABS hydraulic unit
57ASeparator valveABS hydraulic unit
58MGroundGround point
59EVoltage supplyFuse 21
60Not used
61E/ACan LowDME/EGS module
62E/ACan HighDME/EGS module
63EASC throttle flap signalAccelerator pedal position sensor
64EASC throttle flap potentiometer (–)Accelerator pedal position sensor
65Not used
66ASensor groundLeft front speed sensor ABS
67ASensor groundRight front speed sensor ABS
68ASensor groundLeft rear speed sensor ABS
69ASensor groundRight rear speed sensor ABS
70ESignal pump motorABS pump motor relay
71Not used
72EBrake pedal positionBrake light switch
73Not used
74MGroundGround point
75Not used
76Not used
77ALeft front outlet valveABS hydraulic unit
78ARight rear outlet valveABS hydraulic unit
79ALeft rear inlet valveABS hydraulic unit
80ALeft rear outlet valveABS hydraulic unit
81ARight front outlet valveABS hydraulic unit
82ARight front inlet valveABS hydraulic unit
83AActivate relayABS pump motor relay
84ALeft front inlet valveABS hydraulic unit
85EASC throttle flap potentiometer (+)Accelerator pedal position sensor



Pin Assignments

318i





E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
86
ASignal ABSABS 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
92ASpeed signal right rearDME module
93Not used
94ESignal ASCASC switch
95ESlip control system warning lampSlip control module (ASC)
96MGroundGround point
97ASignal ASCInstrument 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
5ASignal ABSABS hydraulic unit

X1161
2
X1165
X11393

SLIP CONTROL (ABS/ASC)






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/GR2.5 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







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 TRAV-
EL 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
X1166M3








SLIP CONTROL (ABS/ASC)
5P90
FRONT POWER
DISTRIBUTION BOX F10
30A
.35 GR/RT
F215A
2 1
S6
ASC SWITCH
1) OPEN
2) MOMENTARILY
CLOSED
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)





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)






3
A52
SLIP CONTROL
MODULE
(ABS/ASC)
1) IGNITION CUT–
OFF
2) TIMING CON-
TROL/INJEC-
TION 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)





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
318i

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
R6255z
THROTTLE
POSITION SENSOR
(ASC)
.5 GR/WS1 X6255
3450.1-06 3450.1-063450.1-06
WITH EGS