1998 BMW Z3M ROADSTER Electrical Troubleshooting Manual






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ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
A836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II)
7071
X16594
.5 SW/VI
15
10
X600074
B6232
ENGINE COOLANT
TEMPERATURE
SENSOR
CYL. 1 AND 2W9110
SHIELD53
4440
.75 BR/SW
16
7
83
24
A35y
BOARD
COMPUTER
(BC – LOW)
X102454
.35 WS/SW
X20
X6000
TIA6000
ENGINE CONTROL
MODULE (DME)
1) DRIVE–AW AY
PROTECTION
3
X62324
2 X62521
X6252
R6252
THROTTLE
POSITION
SENSOR .75 GR/WS .5 BR/VI
X6461
.5 BR/RT
1 X6205
B6205
INTAKE AIR
TEMPERATURE
SENSOR
.5 BR/SWX6205
2
.5 BR/RT
.75 BR/SW
CYL. 3 AND 4
4 X62403
W9110
SHIELD
21
W9110
SHIELD W9110
SHIELD .35 SW .35 SW
31
15
.5 WS/SW
3 1
4 X6091
.75 BR/SW
6322
X6232X6091
.5 GR/WS .5 BR/VI .5 BR/RT
X8005
2.5 GN
.5 BR/SW B6240
KNOCK SENSOR.5 BR/SW
7 X6031
72
5
3
1 X195283
X19528
B65
FUEL TANK
PRESSURE
SENSOR
1
6 X6031
1 X6501
.5 GR/WS
X6501
2
X10169
&#
.5 BR/SW
.5 BR/SW.5 BR/SW .5 GE/RT
.5 GE/RT
.5 GE/RT.5 GR/WS
.5 GR/WS .5 GR/WS






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ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
34
86
X600068.35 GEA8500
TRANSMISSION
CONTROL MODULE
(EGS)55
6
1210.20-00
X8500
8685
.35 SW
85 X6000
A6000
ENGINE CONTROL
MODULE (DME)
2.5 BR 2.5 BR 2.5 BR
2 X20
.35 SWA52
SLIP CONTROL
MODULE
(ABS/ASC)
1 .35 GE
79
9 .5 WS/GN
.35 SW .35 GE .5 SW/WS
X7845
X7846
1X62174
45
2
17
3 X6217
1.5 RT/WS
.5 GR/VI .5 GR/BL

+–
X203 .5 GR/VICAN LOW CAN HIGH
GROUND
DISTRIBUTION
0670.4CAN LOW CAN HIGH
GROUND
DISTRIBUTION
0670.4
CAN LOW CAN HIGH
.35 GE 3.5 SW B6217
HOT FILM AIR
MASS METER
28
1.5 BR
8
.5 GR
42
.5 GN/RT
1613 X17
13 X6031
X16
.5 GR .5 GN/RT
A2w
INSTRUMENT
CLUSTER
+( '
&# &# &# &#
.35 SW/GN
2X11379
S36y
DOUBLE
TEMPERATURE
SWITCH
57
8 .5 RT/WS
.35 SW/GR
5X52
K21
NORMAL SPEED
RELAY
X11706 7 37






DATA LINK
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ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
8060
DATA LINK
0670.5
8788 X6000
A2w
INSTRUMENT
CLUSTER
3) ENGINE SPEED
INPUT
X20
20
X8015
.5 SW
.5 SW
TD
.5 WS/VIA8500
TRANSMISSION
CONTROL MODULE
(EGS)
17
15
18
X6002
.5 WS/VI
X6866
X6863
.5 WS/GE .5 WS/GE
.5 WS/VI .5 WS/GE
A6000
ENGINE CONTROL
MODULE (DME) TXD RXD D100
DATA LINK
CONNECTOR
88 X8500
TXD
.5 SW
X1620
3
.5 SW
15
X1047
.5 SW
A836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II)
12
.35 SWX1659
.75 WS/GN
1
X6002D100
DATA LINK
CONNECTOR
40 TD
.5 SW
&#






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#""$


ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
A6000
ENGINE CONTROL
MODULE (DME)
X6000
11
415
.5 SW/GR
A6000
ENGINE CONTROL
MODULE (DME)
5 X20
X127
B8y
PRESSURE SWITCH
1) PRESSURE
BELOW 21 BAR
2) PRESSURE
ABOVE 30 BAR
3) PRESSURE
ABOVE 2.6 BAR
4) PRESSURE
BELOW 1.5 BAR
X1271
X100544 .5 VI
.5 SW/GEB9508
PRESSURE
SWITCH
P90
FRONT POWER
DISTRIBUTION BOX
X10016
12
4 X51
X515
X20
4
36FUSE DETAILS
0670.3
K19
COMPRESSOR
CONTROL RELAY
.5 SW/BL
.5 SW/BL
.5 SW/BLX6000
86
85
6
.75 BL/WS
69
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
X8500
46
.5 SW/BL
5 X10054
.5 SW/VI
X8056
X183503X183492
1 SW/VI 1 SW/VI
.5 SW/GE
5 X18350
X189
1 SW/VI S221
EVAPORATOR
CONTROLLER
S221
EVAPORATOR
CONTROLLERS220
AIR CONDITION-
ING/RECIRCULAT-
ING SWITCH
ASSEMBLY
F165A
31 2 1
4 3
31






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ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
K6304
SECONDARY AIR
PUMP RELAY
G6430
B+ JUMP START
JUNCTION POINT
+$(#+( '
9 .5 RT/WS
X6031
NOT USED
GROUND
DISTRIBUTION
0670.4 2 X6263
1 X6263
2 X6163
1 X6163
.5 RT/WS .5 RT/WS
.5 GE/RT
66
Y6263
FUEL CHANGE-
OVER VALVEY6163
SECONDARY AIR
PUMP VALVE
.5 BR/WS82
465 X6304
X6304
POWER
DISTRIBUTION
0670.2
X6821
(PARTIAL)
.5 RT/WSPOWER
DISTRIBUTION
0670.2
.5 BR/WS
.5 BR/WSX6891
4 RT/GE
2 X6133
1 X6133
A6000
ENGINE CONTROL
MODULE (DME) X6000
644 BRY6133
AIR PUMP
1210.20-00
X6433

1230.0 CHARGING SYSTEM !""



#""$


1.5 BL
G6509
GENERATORB+
D+
A2w
INSTRUMENT
CLUSTER X175
X176S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
X2091
7 X33
POWER
DISTRIBUTION
0670.2X203
2.5 GN
2.5 GN
.5 GN
.5 BL
X600212
D100
DATA LINK
CONNECTOR .5 BL
X2025
.5 BL
X400
3
POWER
DISTRIBUTION
0670.2
X7509
X6509
.75 BL 10 RT
X213
X8004
.5 BL






X1100
1.5 GN
X60919
1.5 BL
TELEPHONE
CONNECTOR
2
10
3
&#
&# &#
G6509
GENERATORB+
D+
POWER
DISTRIBUTION
0670.2
X6509
16 RT
&#
&# &#
F2610A
6–CYLINDER4–CYLINDER
X1001712
FUSE DETAILS
0670.3
P90
FRONT POWER
DISTRIBUTION BOX
X6524
2
X65241


Z3 ROADSTER

CHARGING SYSTEM !""



#""$


A2w
INSTRUMENT
CLUSTER X175
X176S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
X2091
7 X33
POWER
DISTRIBUTION
0670.2X203
2.5 GN
2.5 GN
.5 GN
.5 BL
X600212
D100
DATA LINK
CONNECTOR .5 BL
X2025
.5 BL
X400
3
.75 BL
X213
X8004
.5 BL






X1100
1.5 GN
1.5 BL
TELEPHONE
CONNECTOR
2
10
3
G6509
GENERATORB+
D+
POWER
DISTRIBUTION
0670.2
X6509
16 RT
&#
&# &#
X7509


A52
SLIP CONTROL
MODULE
(ABS/ASC) X117524
.75 BL
M ROADSTER

X1186






5 X209S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
X209
4
 !""



#""$



1240.0 START
.5 BR/SW16
5 X511
P90
FRONT POWER
DISTRIBUTION BOX POWER
DISTRIBUTION
0670.2 X0
X331 4 RT
4 RT
L2S3
AUTOMATIC
TRANSMISSION
RANGE SWITCH
0) OFF (LOW)
1) ON (HIGH)
X511
7
2.5 SW/GE
8 X33
P90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3 X2
16 RT
ELECTRONIC
TRANSMISSION
CONTROL
(EGS A4S 270R)
2460.2 POWER
DISTRIBUTION
0670.2
1
7
18 X20GROUND
DISTRIBUTION
0670.4
2.5 GN/SW
FUSE DETAILS
0670.3
2
35
A836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II)
X1659
X10018
2.5 SW/GE 2.5 SW/GE
F315A
+#$#)
1 0
F285A
210
3
X1001730
3 X18994
S235
STARTER
IMMOBILIZATION
SWITCH
1) NORMAL
2) CLUTCH PEDAL
FULLY
DEPRESSED 2FUSE DETAILS
0670.3
12
F457.5A
1X18994
+"(&&
GROUND
DISTRIBUTION
0670.4 X1659
.35 BR/SW
9
X191
WITH EGS WITHOUT EGS
.5 BR/SW