1998 BMW Z3M ROADSTER Electrical Troubleshooting Manual






SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG) !""


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4
FUSE DETAILS
0670.3 22P90
FRONT POWER
DISTRIBUTION BOX
+##
X10018
F4115A
DATA LINK
0670.5
.5 WS/VI
TXD
X74
X185181
14 X17
A2w
INSTRUMENT
CLUSTER
8
.5 BL/WS/GE
3
12
GROUND
DISTRIBUTION
0670.4
S59
PASSENGER’S
SEAT BELT SWITCH
1) BELT
UNBUCKLED
2) BELT BUCKLED
1 2
12
.5 BR/GN/WS
3
X7781
S58
DRIVER’S SEAT
BELT SWITCH
1) BELT
UNBUCKLED
2) BELT BUCKLED
GROUND
DISTRIBUTION
0670.4
X18518NOT USED
2.5 BL/VI/GE
GKBF GKFA12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
2 X778
NOT USED
4
NOT USED
9
X74
FUSE DETAILS
0670.3






SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
SIDE AIR BAG
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A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
FUSE DETAILS
0670.3
.35 WS/BL
P90
FRONT POWER
DISTRIBUTION BOX
X10018
22
20
G14
LEFT SIDE AIR BAG
GAS GENERATOR
16 17
.5 BL .5 BR
1
2 X1885B78
DRIVER’S SIDE
IMPACT SENSOR
F4115A
.5 GE
33
B79
PASSENGER’S
SIDE IMPACT
SENSOR
1X1885
GROUND
DISTRIBUTION
0670.4
25 26
.5 BR
12
G15
RIGHT SIDE AIR
BAG GAS
GENERATOR
1819
.5 GE .5 BR
25 26
.5 BR
12
.5 BLX257
X1883
X256
X1884
X74
.5 VI/BL
2 X1886
X1886
GROUND
DISTRIBUTION
0670.4
X7421 .35 WS/GE
X10010
THE DRIVER’S AND
PASSENGER’S AND
THE SIDE AIR BAG
GENERATORS AND
THE
PYROTECHNICAL
BELT TENSIONERS
ARE FITTED WITH
SHORTING
BRIDGES.THE BRIDGES
SHORT THE
GENERATOR
LEADS TOGETHER
TO PREVENT
UNINTENTIONAL
TRIGGERING OF
THE IGNITER
WHEN WORKING
ON THE AIR BAG
SYSTEM.
X10010
.5 VI/BL
LATE PRODUCTION

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19
3450.0-01
3450.0-02
3450.0-00
3450.0-00 K10
ABS RELAY
Y1
ABS HYDRAULIC
UNITP90
FRONT POWER
DISTRIBUTION BOX
K75
ABS PUMP MOTOR
RELAY
A7
SLIP CONTROL
MODULE (ABS)
29 X11
26 X11
TXD
X1128
12724233940 2522 2
S30
BRAKE LIGHT
SWITCH
F4615A
3716
B2
LEFT FRONT
SPEED SENSOR –
ABS34 13
B4
LEFT REAR SPEED
SENSOR – ABS15 3635 1441
3450.0-02
3450.0-00
3450.0-00
3450.0-02
B1
RIGHT FRONT
SPEED SENSOR –
ABS3450.0-02
B3
RIGHT REAR
SPEED SENSOR –
ABS
17
9


42F27
5A
A2w
INSTRUMENT
CLUSTER 3450.0-00
NOT USED
8
RXD 7
5
3450.0-01
32
A6000
ENGINE CONTROL
MODULE (DME)
F215AF1030AF3830A
3450.0 SLIP CONTROL (ABS)








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Pin Assignments
 !""
E = Input, A = Output, M = Ground
X1170
Pin Type Description/Function Connection
51
AABS relayABS relay
52AActivate left front inlet valveABS hydraulic unit
53Not used
54Not used
55MGroundGround point
56Not used
57ARxD diagnostic data linkData link connector
58ETerminal 15Fuse 21
59EVoltage supplyABS pump motor relay
60:;
61Not used
62Not used
63AGround, left rear speed sensorLeft rear speed sensor
64AGround, right rear speed sensorRight rear speed sensor
65ESignal, right front speed sensorRight front speed sensor
66AGround, left front speed sensorLeft front speed sensor
67MGroundGround point
68Not used
69ETerminal 15Fuse 21
70Not used
71Not used
72AActivate right front inlet valveABS hydraulic unit
73AActivate pump relayABS pump motor realy
74AActivate rear axle inlet valveABS hydraulic unit
75AActivate left front outlet valveABS hydraulic unit
76MGroundGround point
77EPower protectionABS hydraulic unit
78E/ATxD diagnostic data linkData link connector
79ETerminal 54Brake light switch
80Not used








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Pin Assignments
 !""
E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
81
Not used
82Not used
83Not used
84ESignal, left rear speed sensorLeft rear speed sensor
85ESignal, right rear speed sensorRight rear speed sensor
86AGround, right front speed sensorRight front speed sensor
87ESignal, left front speed sensorLeft front speed sensor
88Not used
89AActivate rear outlet valveABS hydraulic unit
90AActivate rear front inlet valveABS hydraulic unit
91MGroundGround point
92AActivate ABS lamp controlInstrument cluster

SLIP CONTROL (ABS) !""



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K75
ABS PUMP MOTOR
RELAY
2.5 RT/BL/GE
32 X10018
X181
2 X1001720 X1001516 X10018
11 X17
685X54
69 X1161
42X54
48 X1161
23 X16
29
BRAKE LIGHTS
6325.0
X1164
422.5 RT/BL/GE
.5 BR/SW
A7
SLIP CONTROL
MODULE (ABS).5 GN/BL/GE
.5 BR/GR 2.5 RT/
GN/GE
K10
ABS RELAY A2w
INSTRUMENT
CLUSTERP90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
F4615AF215AF1030AF3830A
1 X78
2 X78
S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
2
X170
9
.5 GN/BL/GE
1X1119
14F27
5A
FUSE DETAILS
0670.3
NOT USED
2.5 RT/BL/GE .5 GR/SW/GENOT USED
GROUND
DISTRIBUTION
0670.4 1.5 BL/RT
.75 BL/RT
7 .5 WS/GE28 .5 WS/VI
DATA LINK
0670.5
RXD TXD






8
.5 GN/BL/GE
1 2
M ROADSTER

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9X1123
.5 BR/GR
7X31
2.5 RT/BL/GE
3
1112109812
.5 RT/BR/GE.5 BR/BL.5 BR/WS.5 BR/GN/GE.5 BR/RT.5 BR/GN.5 BR/WS/GE
2724394025222X11
1726
X170
4 X31
X170
2.5 RT/GN/GE
A7
SLIP CONTROL
MODULE (ABS)
Y1
ABS HYDRAULIC UNIT
6) INLET VALVE
REAR AXLE
7) OUTLET VALVE
REAR AXLE
8) RIGHT FRONT
OUTLET VALVE
9) LEFT FRONT
OUTLET VALVE
10) RIGHT FRONT
INLET VALVE
11) LEFT FRONT
INLET VALVE
13) OVER –VOLTAGE
PROTECTION
14) PUMP MOTOR
A7
SLIP CONTROL
MODULE (ABS)
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4 6 789 10 11
14 13
41X11
GROUND
DISTRIBUTION
0670.4
X1055
.75 RT/GN/GE 2.5 RT/GN/GE
5
GROUND
DISTRIBUTION
0670.4
.75 BR/RT
32
2 X20
15 X6000
.5 BR/RT
A6000
ENGINE CONTROL
MODULE (DME)

SLIP CONTROL (ABS) !""



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1637341315363514 X11
.5 BR
12X11421 X14221X11321 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 WHEELA7
SLIP CONTROL
MODULE (ABS)
LEFT REAR PULSE
WHEELRIGHT FRONT
PULSE WHEELRIGHT REAR
PULSE WHEEL
.5
BR/
RT.5 BL .5
BR.5 GE .5
BR.5 GE/SW .5
GE/
BR
3X114
X9633
GROUND
DISTRIBUTION
0670.4
3X113
X18170
GROUND
DISTRIBUTION
0670.4






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