1998 BMW Z3M ROADSTER Electrical Troubleshooting Manual






DATA LINK
RXD
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X101829A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
RXD
X11718A52
SLIP CONTROL
MODULE
(ABS/ASC)
X2016
X6863
.5 WS/GE .5 WS/GE
X182
.5 WS/GE
.5 WS/GE
RXD
.5 WS/GE
X102453A35y
BOARD
COMPUTER
(BC – LOW)
.35 WS/GE
RXD
X600087A6000
ENGINE CONTROL
MODULE (DME)
RXD
.5 WS/GE
D100
DATA LINK
CONNECTOR
X600215 4–CYLINDER
X16
11A2w
INSTRUMENT
CLUSTER
.5 WS/GE
RXD
M ROADSTER
X11
7A7
SLIP CONTROL
MODULE (ABS)
.5 WS/GE
RXD
Z3 ROADSTER
6–CYLINDERM ROADSTER
WITH ABS

366–CYLINDER
6–CYLINDER
X8072
.5 WS/GN






DATA LINK
DATA LINK CONNECTOR, PINS 1, 7, 14, AND 16
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X1047
20 X16
.5 SW
40 X8500
.5 SW
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
X8015
A6000
ENGINE CONTROL
MODULE (DME) X6000
.5 SW
.5 SW3
.5 SW
TD
20 X20
.5 SW
80
12 X1659
.35 SWA836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II)
12 X10017
7
16 X6002
D100
DATA LINK
CONNECTOR
FUSE DETAILS
0670.3
A2w
INSTRUMENT
CLUSTER
3) ENGINE SPEED
INPUT
15 X17
19 X20
.5 WS/GN
.5 WS/GN
14 2.5 RT
G1
BATTERY
POWER
DISTRIBUTION
0670.2
X6410
P90
FRONT POWER
DISTRIBUTION BOXF2610A
POWER
DISTRIBUTION
0670.2
1
41 X1171
A52
SLIP CONTROL
MODULE
(ABS/ASC)
.5 SW
4–CYLINDER
X6412
6–CYLINDER
6–CYLINDER 20 X1175
M ROADSTER

.5 GN/BL
.5 GN/BL
X6459
1.5 BR/OR






DATA LINK
DATA LINK CONNECTOR, PINS 4, 12, 18, AND 19
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D+
12 X6002
D100
DATA LINK
CONNECTOR25 X20
3 X400
X7509
G6509
GENERATOR
1.5 BL
.5 BL .5 BL.5 BL X8004
X213
.75 BL
A2w
INSTRUMENT
CLUSTER 6 X17
.5 BL
D100
DATA LINK
CONNECTOR
18 X6002
60 X6000A6000
ENGINE CONTROL
MODULE (DME)
19
X6454
GROUND
DISTRIBUTION
0670.4
.75 WS/GN
X6860X6463
9 X6091
1.5 BL
TELEPHONE
CONNECTOR
FUSE DETAILS
0670.3
4
24 X10018
P90
FRONT POWER
DISTRIBUTION BOX
F425A2 X6524
G6509
GENERATOR
D+
Z3 ROADSTER
6–CYLINDER
6–CYLINDER 1.5 BR
4–CYLINDER1.5 BL
1.5 BL
G6509
GENERATOR
D+
X7509
D+
1.5 BL
M ROADSTER
A52
SLIP CONTROL
MODULE
(ABS/ASC) 24 X1175
.75 BL
M ROADSTER
WITH ASC

6–CYLINDER
.5 WS/VI/GE






DATA LINK
DATA LINK CONNECTOR, PIN 2 AND OBD II CONNECTOR
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7X19527
D110
OBD II
CONNECTOR
2
X18170
GROUND
DISTRIBUTION
0670.4
X1618
.5 BR 4X6002.5 WS/VI/GE
FUSE DETAILS
0670.3
16
2 X10018
P90
FRONT POWER
DISTRIBUTION BOX
F315A
D100
DATA LINK
CONNECTOR
X6031
.5 WS/VI/GE
45 .5 BR
X1067
.5 RT/GE
X6868

DATA LINK CONNECTOR (X6002)
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DATA LINK
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+*01 230 ,*,21 PIN
NUMBERWIRE COLOR TERMINAL
NUMBERTERMINAL DESCRIPTION
1 122,* 1 122,* 1 122,* 1 122,*
4,2 ,4  1 122,* 1 122,*
410531,226* 1 122,* *,01,2 *,7
0,
*,01,2 *,7 410531,
1 122,*
102810,2111*
-*/ *,01,2 *,7 4105,0,,1,23,*
*,01,2 *,7 01*
!4,!0
!4,!0 -94,!0/
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!0
0!
!4, -9!4,!0/
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 -9
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!4,
9 (26,*






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20 X60021514
17 X60022
820 Ω BRIDGES IN CAP
OF D100 DATA LINK
CONNECTOR
16 X19527157
BRIDGE IN CAP OF
D110 OBD II
CONNECTOR
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S221
EVAPORATOR
CONTROLLER 1210.17-09
1210.17-12 * 55 * 76 * 70 * 61 * 78 * 72
45
B6204
CAMSHAFT
POSITION SENSOR
(CYLINDER
IDENTIFICATION) 1210.17-06
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A6000
ENGINE
CONTROL
MODULE (DME) 1210.17-00
7387
1210.17-02
B6207
HOT FILM AIR
MASS METER K6300
ENGINE CONTROL
MODULE RELAY
87
A8500
TRANSMISSION
CONTROL
MODULE (EGS)
26
1210.17-00
Y6101
CYL. 1 FUEL
INJECTION VALVE
Y6102
CYL. 2 FUEL
INJECTION VALVE
Y6103
CYL. 3 FUEL
INJECTION VALVE 1210.17-01
29
T6151
CYL. 1 IGNITION
COIL
T6154
CYL. 4 IGNITION
COIL
3
T6152
CYL. 2 IGNITION
COIL
T6153
CYL. 3 IGNITION
COIL
T6155
CYL. 5 IGNITION
COIL
T6156
CYL. 6 IGNITION
COIL
18161456
B6205
INTAKE AIR
TEMPERATURE
SENSOR39
B6236
ENGINE COOLANT
TEMPERATURE
SENSOR
12 4442
R6252
THROTTLE
POSITION SENSOR
22 1210.17-05
15S2
IGNITION SWITCH
301312
1210.17-03
1210.17-03
1210.17-02
1210.17-05
A836
ELECTRONIC IMMOBILIZER
CONTROL MODULE (EWS II) 1210.17-09
1210.17-12 X6000
88
S221
EVAPORATOR
CONTROLLER
TXD
B8y
PRESSURE
SWITCH
1210.17-02
+
–
G6430
B+ JUMP START
JUNCTION POINT
D100
DATA LINK
CONNECTOR 1210.17-00
19
F165AP90
FRONT POWER
DISTRIBUTION BOX 1210.17-07
74K19
COMPRESSOR
CONTROL RELAY
1210.17-07
86
85
F1815A
P90
FRONT POWER
DISTRIBUTION BOX
M2
FUEL PUMPK6301
CYL. 1–6 FUEL
PUMP RELAY
1210.17-10
1210.17-111210.17-10
1210.17-11
Y6104
CYL. 4 FUEL
INJECTION VALVE
Y6105
CYL. 5 FUEL
INJECTION VALVE
Y6106
CYL. 6 FUEL
INJECTION VALVE 1210.17-01
241210.17-0562
Y6275
VARIABLE CAM-
SHAFT CONTROL
VALVE 1
Y6120
EVAPORATIVE
EMISSION VALVE
Y6163
SECONDARY AIR
PUMP VALVE
Y6550
SOLENOID VALVE
(”RUNNING
LOSSES”)
23 503368+
–+
–
B9508
PRESSURE
SWITCHX6000
X6000
65
B6240
KNOCK SENSOR 1210.17-06
5963
S220
AIR CONDITIONING/
RECIRCULATING
SWITCH ASSEMBLY 1210.17-09
1210.17-12
9
A35y
BOARD
COMPUTER
(BC – LOW) 1210.17-098081
A52
SLIP CONTROL
MODULE
(ABS/ASC)
1210.17-00
M6506
E–BOX FAN 1210.17-00
B62202
OXYGEN SENSOR II
(BEHIND CATALYTIC
CONVERTER)
B62201
OXYGEN SENSOR II (IN
FRONT OF CATALYTIC
CONVERTER)
B62102
OXYGEN SENSOR I
(BEHIND CATALYTIC
CONVERTER)
B62101
OXYGEN SENSOR I (IN
FRONT OF CATALYTIC
CONVERTER) 1210.17-10
1210.17-11
7977715425 75 67
20
A2w
INSTRUMENT
CLUSTER
4636
49
Y6133
AIR PUMP 1210.17-05
F135A
SPARK PLUGS
B6247
CHARCOAL
FILTER SHUT–
OFF VALVE
511210.17-04
K6304
SECONDARY AIR
PUMP RELAY
K6326
UNLOADER RELAY,
TERMINAL 15
35
G6430
B+ JUMP START
JUNCTION POINT1210.17-05
11 4 0
B65
FUEL TANK
PRESSURE
SENSOR 1210.17-0432 3444364158286
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
85415758
B6203
CRANKSHAFT
POSITION/RPM
SENSOR 1210.17-06
3883 48
53 27Y6130
IDLE SPEED
CONTROL VALVE 1210.17-015 6211210.17-01
1210.17-05
60
D100
DATA LINK
CONNECTOR1210.17-02
1210.17-04
1210.17-08
1210.17-12
10
1210.17-07
1210.17-071210.17-09
69
2852
NOT USED
1210.17-08
1210.17-02
Z3 ROADSTER B6210y
OXYGEN SENSOR (IN
FRONT OF CATALYTIC
CONVERTER)
B6220y
OXYGEN SENSOR
(BEHIND CATALYTIC
CONVERTER) M ROADSTER
Z3 ROADSTER
A7
SLIP CONTROL
MODULE (ABS) 1210.17-12
WITH ABS WITH ASC * M ROADSTER
1210.17-12
Z3 ROADSTER
1210.17 ENGINE CONTROL SYSTEM MS41.1 (6–CYLINDER M52/S52)


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Pin Assignments
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E = Input, A = Output, M = Ground
X6000
Pin Type Description/Function Connection
1
ACyl. 2 ignition coil controlCyl. 2 ignition coil
2ACyl. 4 ignition coil controlCyl. 4 ignition coil
3ACyl. 6 ignition coil controlCyl. 6 ignition coil
4MGroundGround point
5ACyl. 2 fuel injection valve controlCyl. 2 fuel injection valve
6ACyl. 1 fuel injection valve controlCyl. 1 fuel injection valve
7MGroundHot wire air mass meter
8EHot wire air mass meterHot wire air mass meter
9ETI-measurement signal (fuel consumption)Board computer (Z3 Roadster)
10EEngine coolant temperatureEngine coolant temperature sensor
11EFuel tank pressureFuel tank pressure sensor
12EThrottle position signalThrottle position sensor
13Not used
14EIntake air temperatureIntake air temperature sensor
15ERight rear speed signalABS/ASC control module
16EActivate A/CPressure switch
17Not used
18EDrive-away protection signal (code)Electronic immobilizer control module
(EWS II)
19EA/C-ON-signalAir conditioning operating unit
20A“Check engine” indicator controlInstrument cluster
21ACamshaft controlVariable camshaft control valve
22ACyl. 3 fuel injection valve controlCyl. 3 fuel injection valve
23ACyl. 6 fuel injection valve controlCyl. 6 fuel injection valve
24ACyl. 4 fuel injection valve controlCyl. 4 fuel injection valve
25MOxygen sensor heating groundOxygen sensor (in front of catalytic
converter)
26EBattery voltageB+ jump start junction point
27AActivate valveIdle speed control valve
28MGroundGround point
29ACyl. 1 ignition coil controlCyl. 1 ignition coil


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Pin Assignments
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E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
30
ACyl. 3 ignition coil controlCyl. 3 ignition coil
31ACyl. 5 ignition coil controlCyl. 5 ignition coil
32MGroundGround point
33ACyl. 5 fuel injection valve controlCyl. 5 fuel injection valve
34MGroundGround point
35AActivate relaySecondary air pump relay
36ACrankshaft RPM speed signal TDInstrument cluster
37Not used
38MGroundShield knock sensor
39MGroundTemperature sensors
40MGroundCrankshaft position/RPM sensor
Fuel tank pressure sensor
41MGroundShield camshaft position sensor
42MGroundThrottle position sensor
43MGroundCamshaft position sensor
44AVoltage supplyThrottle position sensor
Fuel tank pressure sensor
45AThrottle position signalABS/ASC control module
46ETI-measurement signal (fuel consumption)Instrument cluster
47Not used
48AVoltage supplyCrankshaft position/RPM sensor
49ETerminal 15Ignition switch
50ARunning lossesSolenoid valve
51AActivate valveCharcoal filter shut off valve
52ASignal exhaust flapNot used (Z3 Roadster)
53AActivate valveIdle speed control valve
54EBattery voltage, terminal 87Engine control module relay
55MOxygen sensor heating groundOxygen sensor II (in front of catalytic
converter) (M Roadster)
56MGroundGround point
57ECyl. 1-3 knock sensorKnock sensor
58ECyl. 1-3 knock sensorKnock sensor
59ECyl. 4-6 knock sensorKnock sensor