1998 BMW Z3M ROADSTER coolant





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Pin Assignments
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E = Input, A = Output, M = Ground
X17
Pin Type Description/Function Connection
1
ETrailer turn signal indicator controlHazard flasher relay
2AVehicle speed signalVarious control modules
3MGround supply, terminal 31 for indicator and
warning lampsGround point
4EVoltage supply, terminal 15 for instrument
cluster electronicsFront power distribution box, fuse 23
5EVoltage supply, terminal 15 for battery
charge indicatorIgnition switch, terminal 15
6EGround supply, terminal 61 for battery
charge indicatorGenerator
7Not used
8EFog light indicator controlFront power distribution box, fuse 15
9ASound tone signalChime module
10not used
11ESlip control system warning lamp (ABS)
controlSlip control module (ABS/ASC) (Z3 Road-
ster 6-cylinder and M Roadster with ABS)
12EASC signalASC control module
13ATI-measurement signal (fuel consumption)Engine control module (DME)
14ESeat belt warning lamp controlDriver’s seat belt switch
15ESIA reset/service interval indicator resetData link connector
16EVoltage supply, terminal RFront power distribution box, fuse 46
17ACoolant temperature sensor (–)Coolant temperature sensor
18ECoolant temperature sensor (+)Coolant temperature sensor
19EOil pressure warning lamp controlOil pressure switch
20Not used
21MGround (ASC)Ground point (Z3 Roadster 6-cylinder and
M Roadster with ABS)
21EABS warning lamp (ABS)Slip control module (ABS/ASC)
(4-cylinder and M Roadster with ASC)
22EIgnition key warning/audible ignition key
warningIgnition switch
23EDriver’s door openDriver’s door jamb switch

.5 BR/RTM ROADSTER
.5 BR/RT






FUSE DETAILS
0670.3
P90
FRONT POWER
DISTRIBUTION BOX
X1623
X1001714
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INDICATORS
INSTRUMENT CLUSTER
A2w
INSTRUMENT
CLUSTER
3) ENGINE SPEED
INPUT
7) TACHOMETER
X62321B6232
ENGINE COOLANT
TEMPERATURE
SENSOR
18X1620
.5 SW
GROUND
DISTRIBUTION
0670.4.5 BR/VI
3
TACHOMETER
31
1112
17
.5 BR/GE 24
X16
31
TEMPERATURE
GAUGE
X1047
A6000
ENGINE CONTROL
MODULE (DME) X6000
.5 SW
B6231
OIL PRESSURE
SWITCH
1) PRESSURE
BETWEEN
0.2–0.5 BAR
2) NORMAL
PRESSURE
X1719
2 X6232
23
X20
.5 SW20 X20
.5 BR/GN
.5 BR/GE
X6231
1
X8015
.5 SWX17
A836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II) 12 X1659TD .35 SW
TD .5 BR/GN
A8500
TRANSMISSION
CONTROL MODULE
(EGS) 40 X8500TD .5 SW X6091
23
.5 BR/GN .5 BR/VI .5 BR/GE
18 17
.5 BR/VI
7
X6002
15 .5 WS/GN
X2019
.5 WS/GND100
DATA LINK
CONNECTOR
80
F275A
RCHECK
ENGINE15
16
1
X6031
8
D100
DATA LINK
CONNECTOR.5 SW .5 GR
.5 GR
2 1
1
X6002
7
X8051X8071X80106–CYLINDER 4–CYLINDER
36 20 6–CYLINDER
A52
SLIP CONTROL
MODULE
(ABS/ASC) 41 X1171
.5 SW6–CYLINDER
4–CYLINDER .5 WS/GNX8072
6–CYLINDER
+##
M ROADSTER20 X1175M ROADSTER






COMPONENT LOCATION CHART





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COMP.8500.0 7100.0LOCATION DESCRIPTION


B6204

CAMSHAFT POSITION SENSOR
(CYLINDER IDENTIFICATION) . . . . . . . .

front of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31-3

B6205 INTAKE AIR TEMPERATURE SENSOR . . front LH side of engine compartment (4–cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

B6205
INTAKE AIR TEMPERATURE SENSOR . .
front LH side of engine compartment (6–cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34-1

B6207

HOT FILM AIR MASS METER . . . . . . . . . . .

LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33-3


B6209 HALL EFFECT CAMSHAFT SENSOR . . . . front of engine


B6210y

OXYGEN SENSOR (IN FRONT OF
CATALYTIC CONVERTER) . . . . . . . . . . . .

under center of car . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35-1

B6217 HOT FILM AIR MASS METER . . . . . . . . . . . front LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

B6220y
OXYGEN SENSOR (BEHIND CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . . . . .
under center of car . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35-1

B6231 OIL PRESSURE SWITCH . . . . . . . . . . . . . . . lower LH side of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-2

B6232
ENGINE COOLANT TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . .
front of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10-2

B6238 OIL TEMPERATURE SENSOR . . . . . . . . . . RH side of oil filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-2

B6240

KNOCK SENSOR . . . . . . . . . . . . . . . . . . . . . .

top front of engine (4–cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10-2


B6240 KNOCK SENSOR . . . . . . . . . . . . . . . . . . . . . . top front of engine (6–cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-2
B6247 CHARCOAL FILTER SHUT–OFF VALVE . . under LH rear of car . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-1

B6256
DUAL TEMPERATURE SENSOR
(COOLANT TEMPERATURE) . . . . . . . . .
rear of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32-1

B9508 PRESSURE SWITCH . . . . . . . . . . . . . . . . . . . front RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-2

B62001
OXYGEN SENSOR (IN FRONT OF
CATALYTIC CONVERTER) . . . . . . . . . . . .
under center of car . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14-3

R6252
THROTTLE
POSITION SENSOR B6232
ENGINE COOLANT
TEMPERATURE
SENSOR
X6231
X6232
COMPONENT LOCATION VIEWS !""




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X6091






B6240
KNOCK SENSOR
X6130
X6252
Y6130
IDLE SPEED
CONTROL VALVE










X6231X6238
COMPONENT LOCATION VIEWS !""




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B6256
DUAL
TEMPERATURE
SENSOR
(COOLANT
TEMPERATURE)
B6231
OIL PRESSURE
SWITCHB6203
CRANKSHAFT
POSITION/RPM
SENSOR




B6238
OIL TEMPERATURE
SENSOR