1999 BMW Z3M COUPE Electrical Troubleshooting Manual



Pin Assignments







E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
81
AASC lamp controlInstrument cluster
82Not used
83ALeft front outlet valveABS hydraulic unit
84ARight rear outlet valveABS hydraulic unit
85ARight rear speed signalEngine control module (DME)
86ESpeed signalABS speed sensor front left
87AActivate relayValve relay
88MSensor groundABS speed sensor rear right
89AThrottle position sensor (–)Auxiliary throttle position sensor
90Not used
91Not used
92Not used
93AThrottle position sensor (+)Auxiliary throttle position sensor
94EASC-ON-signalASC switch
95Not used
96E/ATXD signalDiagnostic link
97Not used
98EBrake signalBrake light switch
99AChangeover valve (ASC)ABS hydraulic unit
100Not used
101EVoltage supplyFuse 10
102ALeft rear inlet valveABS hydraulic unit
103AADS step motor (–)ADS step motor
104ARight front inlet valveABS hydraulic unit
105MGroundGround point
106Not used
107Not used
108Not used
109Not used
11 0Not used
111Not used
11 2Not used



Pin Assignments







E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
11 3
Not used
11 4Not used
11 5Not used
11 6Not used
11 7EASC throttle flap signalAuxiliary throttle position sensor
11 8Not used
11 9Not used
120Not used
121Not used
122Not used
123Not used
124Not used
125Not used
126ESignal park brake setPark brake switch
127EEngine signal 3Engine control module (DME)
128Not used
129Not used
130Not used
131EEngine signal 2Engine control module (DME)
132Not used
133Not used
134Not used
135Not used
136Not used
137Not used
138EThrottle flap positionEngine control module (DME)



Pin Assignments





E = Input, A = Output, M = Ground
X1170
Pin Type Signal Description/Function Connection
1
MVL–Sensor groundLeft front speed sensor (ABS)
2EVL+Speed signalLeft front speed sensor (ABS)
3Not used
4E15A21Voltage supplyFuse 21
5MHL–Sensor groundLeft rear speed sensor (ABS)
6EHL+Speed signalLeft rear speed sensor (ABS)
7E/ATXDTXD signalDiagnostic link
8M31LGroundGround point
9E30<10Voltage supplyFuse 10
10E/ACAN–CAN bus lowInstrument cluster/engine control
module
11E/ACAN+CAN bus highInstrument cluster/engine control
module
12Not used
13E54Brake signalBrake light switch
14EASCSASC-ON-signalASC switch
15Not used
16AWLASWarning lampInstrument cluster
17Not used
18Not used
19MVR–Sensor groundRight front speed sensor (ABS)
20EVR+Speed signalRight front speed sensor (ABS)
21ADFAHRRight rear speed signalEngine control module (DME)
22EHR+Speed signalRight rear speed sensor (ABS)
23MHR–Sensor groundRight rear speed sensor (ABS)
24M31LGroundGround point
25E30<38Voltage supplyFuse 38

SLIP CONTROL (ABS/ASC)









16 X100186 X100162 X19023
3 X1175
42X18766
68X18766
51
X10469
372.5 RT/BL
A52
SLIP CONTROL
MODULE (ABS/ASC)
K94
ENGINE CONTROL
RELAY (ABS/ASC) A52
SLIP CONTROL
MODULE
(ABS/ASC)P95
AUXILIARY FUSE
BOX
FUSE DETAILS
0670.3
F3830AF135AF4950A
8
2
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
7
20F10
30A
FUSE DETAILS
0670.3
2.5 RT/GE


30
87K95
VALVE RELAY
(ABS/ASC)
4X18767
6 X18767
X10015
19 X1175
1 X1175
.75 BR/GE
.75 BR/GEX10468
86
85
.75 BR/GN.75 BR/GE
.75 BR/GR86
8530
87
.75 RT/BL
2.5 RT/BL
P90
FRONT POWER
DISTRIBUTION BOX
M VERSIONS









3X2213
8651011913
3354275225634 X1175
5528
X1166
X9170
X4
Y1w
ABS HYDRAULIC
UNIT
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
16) CHANGEOVER
VALVE ASC
17) SHUT–OFF
VALVE ASC A52
SLIP CONTROL
MODULE
(ABS/ASC)
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4 11 1 0 9 8 7 6
14 12
29 X1175
GROUND
DISTRIBUTION
0670.4
46
.75 BR/RT
2
15
2.5 RT/GE
7
13
12
4926
16 17
X2213
2.5 RT/BL
.75 WS/BL .75 BR/SW .75 WS/BR .75 BR/GR .75 GE/WS .75 BR/BL .75 GR/RT .75 WS/GN .75 WS/RT
TXD
DATA LINK
0670.5
.75 WS/VI

SLIP CONTROL (ABS/ASC)








A52
SLIP CONTROL
MODULE
(ABS/ASC)
R31
AUXILIARY
THROTTLE
POSITION SENSOR 1 X10239
2
X102393
A52
SLIP CONTROL
MODULE
(ABS/ASC)
39 X117531
12X1175
43 67
.5 WS/RT .5 WS/BL
.5 BL/BR.5 WS/BR
76 30
11
.35 GR/SW/GE


23
2.5 SW/GN/GE
53
M93
AUXILIARY
THROTTLE
POSITION MOTOR
(ADS) 1 X8533
X85332
!
14 X10017
F275A
FUSE DETAILS
0670.3
23 X16
P90
FRONT POWER
DISTRIBUTION BOX
X1617
.5 BR/GN
S31
PARK BRAKE
SWITCH
1) BRAKE SET
2) BRAKE NOT SET X423
1
2 1
+
–
.5 BR/GN .5 BR/GNX1682
A2w
INSTRUMENT
CLUSTER
2.5 SW/BR/GE
PARK
BRAKE
M VERSIONS
X1721

GROUND
DISTRIBUTION
0670.4
31



SLIP CONTROL (ABS/ASC)








21 32 X10018
1 X78
X181
1.5 BL/RT
6 X10016
2 X78
48
BRAKE LIGHTS
6325.0
.75 BL/RTS30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
P90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3
F4615AF135A
FUSE DETAILS
0670.3
1881
8280
7788
8145
.75 WS/GN .75 SW/RT .75 SW/BR .75 SW/GN
9 10 X603111 1 2
3520
1536
.5 BR/RT.35 SW
220
X8015
X1175
X6000
X20
2
11 X2227
.5 GN/BL/GE4 X2227
44S6
ASC SWITCH
1) OPEN
2) MOMENTARILY
CLOSED24
CHARGING
SYSTEM
1230.0
3
LIGHT SWITCH
DETAILS
6300.0
2
GROUND
DISTRIBUTION
0670.4

.75 BL.5 GR/RT
X1175
A52
SLIP CONTROL
MODULE
(ABS/ASC)
.75 WS/GN .75 SW/RT .75 SW/BR .75 SW/GN.5 BR/RT.5 SW
INSTRUMENT
CLUSTER
6211.0
.5 SW
.5 SW.5 SW
A6000
ENGINE CONTROL
MODULE (DME) TD TD
D100
DATA LINK
CONNECTOR
X6002
1
X1047
M VERSIONS

SLIP CONTROL (ABS/ASC)








1036131215141138 X1175
.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
X114X113




33
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4


3131
M VERSIONS