1998 BMW Z3M ROADSTER Electrical Troubleshooting Manual






 !""



#""$


CRUISE CONTROL (TEMPOMAT)
16
2X17
INSTRUMENT
CLUSTER
6211.0
.5 SW/WS
R
TACH315V (15)
17 11
14
X188
.5 SW/WS
31
2A2w
INSTRUMENT
CLUSTER
2) VEHICLE
SPEED
OUTPUT
.5 SW/BL
7
31
5
4 .5 GE/WS
1
6
2 X70
X703.5 SW/GN.5 GE/VI
21M25
CRUISE CONTROL
ACTUATOR
(TEMPOMAT) A8
CRUISE CONTROL
MODULE
(TEMPOMAT)
18 X22
.75 BL/BR
A8
CRUISE CONTROL
MODULE
(TEMPOMAT) .5 BL/BRGROUND
DISTRIBUTION
0670.4
P90
FRONT POWER
DISTRIBUTION BOX F46
15A
32
X7821 X78
S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED X10018
FUSE DETAILS
0670.3
X12121 X121
S32
CLUTCH SWITCH
1) NORMAL STATE
2) CLUTCH PEDAL
DEPRESSED
X10010
X22
1.5 BL/RT
.5 SW/BR
19
GROUND
DISTRIBUTION
0670.4
X9633
X197.75 BL/BR.75 BL/RT
X181
BRAKE LIGHTS
6325.0
12
1 2
X1212 1 X121
B900
JUMPER PLUG
WITH EGS WITHOUT EGS






6575.2 ANTI–THEFT SYSTEM (ALPINE) !""

 
#""$



P90
FRONT POWER
DISTRIBUTION BOX
N12w
ANTI–THEFT
CONTROL MODULE
(ALPINE) FUSE DETAILS
0670.3
F435A
2
39
X450
X13025
X10010
GROUND
DISTRIBUTION
0670.4
.5 GN/WS
8
2 X65
.5 BL/GN/GE
N17
CRASH CONTROL
MODULE
1 X10244
.5 VI/GN/GE
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
X1225
26
FUSE DETAILS
0670.3
F315A
1 X13025
2 X10018
17 X132534
10
14 X1659A836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II)
21
S20w
RADIO ANTI–
THEFT SWITCH
1) RADIO
REMOVED
2) RADIO
INSTALLED2 X539
1 X539
X18170
GROUND
DISTRIBUTION
0670.4
21
S21w
ENGINE HOOD
SWITCH
1) HOOD OPEN
2) HOOD CLOSED2 X371
1 X371
X166
GROUND
DISTRIBUTION
0670.4
.5 VI/GN/GE .5 VI/GN/GE
.5 BL/RT/GE .5 BL/RT/GE .5 BL/RT/GE






ANTI–THEFT SYSTEM (ALPINE) !""

 
#""$


P90
FRONT POWER
DISTRIBUTION BOX
N12w
ANTI–THEFT
CONTROL MODULE
(ALPINE) FUSE DETAILS
0670.3
F435A
2
311
1 X711
X465
.75 BR/WS
X10010
GROUND
DISTRIBUTION
0670.4
.5 BR/WS
.75 BR/WS
1 2LICENSE PLATE/
LUGGAGE
COMPARTMENT
LIGHTS
6320.0
26
H1w
ANTI–THEFT HORN
(ALPINE) 2 X372
1 X372
X9633
GROUND
DISTRIBUTION
0670.4
1 SW/BL
1 2X443
S14
DRIVER’S DOOR
JAMB SWITCH
1) DOOR OPEN
2) DOOR CLOSED 2 X352
.75 BR/GR/GE
X13006
GROUND
DISTRIBUTION
0670.4 1 X352
1 2S13
PASSENGER’S
DOOR JAMB
SWITCH
1) DOOR OPEN
2) DOOR CLOSED 2 X351
.75 BR/BL/GE
1 X351
X13004
X445
GROUND
DISTRIBUTION
0670.4
7 X13025
A2w
INSTRUMENT
CLUSTER
23 X17
.5 BR/GR/GE
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
2 X132543
45
.75 BR/GR/GE .75 BR/BL/GE .5 BR/GR/GEFUSE DETAILS
0670.3
F315A
1 X13025
2 X10018
.5 BR/BL/GE
S826
LUGGAGE
COMPARTMENT
LIGHT SWITCH
1) REAR LID
CLOSED
2) REAR LID
OPEN
2 X711
X13006
GROUND
DISTRIBUTION
0670.4

6–CYLINDER9






6581.3 BOARD COMPUTER (BC – LOW) !""


#""$



B21
ON–BOARD
COMPUTER
TEMPERATURE
SENSOR
31
30
31
3131
.35 BR/GR
P90
FRONT POWER
DISTRIBUTION BOX
232 X10018
FUSE DETAILS
0670.3
510
911
LIGHT SWITCH
DETAILS
6300.0
X10245
86 X10245
X10010
1 X770
2 X770
GROUND
DISTRIBUTION
0670.4
X10010GROUND
DISTRIBUTION
0670.4
F315AF4615A
58g
FUSE DETAILS
0670.3
.5 WS/VI2.35 WS/GE3.5 BR/GE7
15
.5 SW/WS2
X188
INSTRUMENT
CLUSTER
6211.0
X11291
B6y
FUEL SENSOR 3 X6500
6 X6500
15
31
3 X271
.5 BR/SW
.5 BR/GE
1 X271
15
.35 BR/RT1
10 X32
1 X32
X18170
GROUND
DISTRIBUTION
0670.4
A2w
INSTRUMENT
CLUSTER
2) VEHICLE
SPEED
OUTPUT 2
X17
.35 SW/WS
.5 GR/RT
A35y
BOARD
COMPUTER
(BC – LOW)
S7
COMBINATION
SWITCH
10) PROGRAM
MODUS 10TXD RXD
DATA LINK
0670.5
.5 BR/GE
A2w
INSTRUMENT
CLUSTER
.5 BR/SW.5 BR/SW
X805
INSTRUMENT
CLUSTER
6211.0
31415
83A6000
ENGINE CONTROL
MODULE (DME)
X6000
24X20.5 WS/SW
.35 WS/SW
.35 BR/RT
.5 BR






7000.0 COMPONENT LOCATION CHART






 !""#""$
COMP. DESCRIPTION LOCATION7100.0 8500.0
A2w . . INSTRUMENT CLUSTER . . . . . . . . . . . . . . . LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-2

A7 . . . .
SLIP CONTROL MODULE (ABS) . . . . . . . .
behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
00-1



A8 . . . .

CRUISE CONTROL MODULE
(TEMPOMAT) . . . . . . . . . . . . . . . . . . . . . . .

behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

00-2

A12 . . SUPPLEMENTAL RESTRAINT SYSTEM
CONTROL MODULE . . . . . . . . . . . . . . . . . below center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-2

A18 . .

HIFI AMPLIFIER . . . . . . . . . . . . . . . . . . . . . . .

in RH side of luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27-3


A35y . BOARD COMPUTER (BC – LOW) . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-3
A51 . . WIPER/WASHER MODULE . . . . . . . . . . . . . behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-2
A52 . . SLIP CONTROL MODULE (ABS/ASC) . . . . behind glove box (4–cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-1

A52 . .
SLIP CONTROL MODULE (ABS/ASC) . . . .
behind glove box (6–cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
00-3

A64 . . WIPER/WASHER MODULE (LOW II) . . . . . behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-2


A104 .

BODY ELECTRONICS CONTROL
MODULE (ZKE IV) . . . . . . . . . . . . . . . . . . .

behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

00-2

A110 . . DIGITAL CLOCK . . . . . . . . . . . . . . . . . . . . . . . center console
A113 . . SEAT OCCUPANCY DETECTOR . . . . . . . . under RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-1
A113 . . SEAT OCCUPANCY DETECTOR . . . . . . . . under RH front seat (WITH SPORT SEAT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41-2

A605 .
FUSE HOLDER . . . . . . . . . . . . . . . . . . . . . . . .
center console (radio and console removed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38-1

A835 . TRANSMITTER MODULE (EWS II) . . . . . . near steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-2


A836 .

ELECTRONIC IMMOBILIZER CONTROL
MODULE (EWS II) . . . . . . . . . . . . . . . . . . .

behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

00-1

A6000 ENGINE CONTROL MODULE (DME) . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1


A8500

TRANSMISSION CONTROL MODULE
(EGS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

01-1






COMPONENT LOCATION CHART





 !""#""$
COMP.8500.0 7100.0LOCATION DESCRIPTION
B1 . . . . RIGHT FRONT SPEED SENSOR – ABS . . on RH front wheel, above brake caliper

B2 . . . .
LEFT FRONT SPEED SENSOR – ABS . . .
on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12-3

B3 . . . . RIGHT REAR SPEED SENSOR – ABS . . . on RH rear wheel, above brake caliper
B4 . . . . LEFT REAR SPEED SENSOR – ABS . . . . on LH rear wheel, above brake caliper
B6y . . . FUEL SENSOR . . . . . . . . . . . . . . . . . . . . . . . . in fuel tank
B8y . . . PRESSURE SWITCH . . . . . . . . . . . . . . . . . . . front RH side of engine compartment

B9 . . . .
INTERMEDIATE PRESSURE SWITCH . . .
front RH side of engine compartment



B10 . . VEHICLE SPEED SENSOR . . . . . . . . . . . . . on differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-2
B14 . . EVAPORATOR TEMPERATURE SENSOR RH side of LH footwell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-2
B16 . . LEFT FRONT BRAKE PAD SENSOR . . . . . on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
B17 . . RIGHT REAR BRAKE PAD SENSOR . . . . . behind RH rear wheel

B18 . .

BRAKE FLUID LEVEL SWITCH . . . . . . . . . .

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

09-1




B21 . .

ON–BOARD COMPUTER TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . .

on front LH wheel well (4–cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-1



B21 . .

ON–BOARD COMPUTER TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . .

in RH front bumper (6–cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35-2

B59 . . OIL TEMPERATURE GAUGE . . . . . . . . . . . center console
B65 . . FUEL TANK PRESSURE SENSOR . . . . . . . top of fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-2
B78 . . DRIVER’S SIDE IMPACT SENSOR . . . . . . under LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39-3

B79 . .
PASSENGER’S SIDE IMPACT SENSOR . .
under RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39-1

B900 .

JUMPER PLUG . . . . . . . . . . . . . . . . . . . . . . . .

LH footwell




B6203 CRANKSHAFT POSITION/RPM SENSOR rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-3






COMPONENT LOCATION CHART





 !""#""$
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






COMPONENT LOCATION CHART





 !""#""$
COMP.8500.0 7100.0LOCATION DESCRIPTION


B62002

OXYGEN SENSOR (BEHIND CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . . . . .

under center of car





B62101

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

on catalytic converter





B62102

OXYGEN SENSOR I (BEHIND CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . . . . .

on catalytic converter





B62201

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

on catalytic converter





B62202

OXYGEN SENSOR II (BEHIND CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . . . . .

on catalytic converter



C101 . CONTACT RING . . . . . . . . . . . . . . . . . . . . . . . top of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-3
D100 . DATA LINK CONNECTOR . . . . . . . . . . . . . . . rear RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-1

D110 .
OBD II CONNECTOR . . . . . . . . . . . . . . . . . . .
center console right . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28-3

E7 . . . . LEFT HEADLIGHT . . . . . . . . . . . . . . . . . . . . . front LH side of engine compartment
E8 . . . . RIGHT HEADLIGHT . . . . . . . . . . . . . . . . . . . . front RH side of engine compartment
E9 . . . . REAR DEFOGGER I . . . . . . . . . . . . . . . . . . . hard top
E11 . . . LEFT HIGH BEAM LIGHT . . . . . . . . . . . . . . . near front LH headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-1

E12 . .

RIGHT HIGH BEAM LIGHT . . . . . . . . . . . . .

near front RH headlight




E13 . . LEFT LOW BEAM LIGHT . . . . . . . . . . . . . . . near front LH headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-1
E14 . . RIGHT LOW BEAM LIGHT . . . . . . . . . . . . . . near front RH headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-3
E15 . . LEFT PARK LIGHT . . . . . . . . . . . . . . . . . . . . . near front LH headlight

E16 . .
LEFT REAR LIGHT ASSEMBLY . . . . . . . . .
LH side of body rear end



E17 . . RIGHT REAR LIGHT ASSEMBLY . . . . . . . . RH side of body rear end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-1
E19 . . RIGHT PARK LIGHT . . . . . . . . . . . . . . . . . . . near front RH headlight