sensor BMW Z3M ROADSTER 1998 E36 Electrical Troubleshooting Manual






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INDICATORS
INSTRUMENT CLUSTER
P90
FRONT POWER
DISTRIBUTION BOX
A2w
INSTRUMENT
CLUSTER
11) FUEL GAUGE
14) SPEEDOME-
TER
31
416X1622
X173X2714
B10
VEHICLE SPEED
SENSORX3832
X3831
14
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
GROUND
DISTRIBUTION
0670.4
X65003
13
B6y
FUEL SENSOR
X10018232X100176
X17
.5 BR/GE
.5 BR/SWX6500
6.5 BR/SW .5 BR/RT
.5 BR/SW
X805
11
01530
45
60FUSE DETAILS
0670.3
X11291
BOARD
COMPUTER
(BC – LOW)
6581.3
.5 BR/GE
+"(&&
F235AF4615AF315A
313131
30








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INSTRUMENT CLUSTER
CONSOLE INSTRUMENTS
P90
FRONT POWER
DISTRIBUTION BOX
F4615A

3
X9002
B59
OIL TEMPERATURE
GAUGE
32X10018
X10059
FUSE DETAILS
0670.3
2
.5 GR/RT
1
.5 BR
1 X6238
1
.35 BR/SWX20
21
X10010
GROUND
DISTRIBUTION
0670.4
X10059
.5 VI/GE
B6238
OIL TEMPERATURE
SENSOR
X6849
1
.5 BR/SW .35 BR/SW.5 BR/RT
LIGHT SWITCH
DETAILS
6300.0 58g
P90
FRONT POWER
DISTRIBUTION BOXF75A

14X10015
FUSE DETAILS
0670.3
N5
ANALOG CLOCK 2
.5 GR/RT
X90032 X1155
X11551
.5 BR
1
.5 BR
X9002
.5 BR X9003
X19245
X9806
M ROADSTER

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P90
FRONT POWER
DISTRIBUTION BOX
K22
HIGH SPEED
RELAY
B9
INTERMEDIATE
PRESSURE
SWITCH
S36
TEMPERATURE
SWITCHM9
AUXILIARY FAN
MOTORK21
NORMAL SPEED
RELAY
6450.6-036450.6-03
6450.6-036450.6-03
6450.6-03 6450.6-03
B8y
PRESSURE
SWITCH
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-03
B9508
PRESSURE
SWITCH
F165AF4030A
S221
EVAPORATOR
CONTROLLER
AUXILIARY FAN – 6–CYLINDERAUXILIARY FAN – 4–CYLINDER
P97
AUXILIARY FUSE
BOX
K22
HIGH SPEED
RELAY
B9
INTERMEDIATE
PRESSURE
SWITCH
S36y
DOUBLE
TEMPERATURE
SWITCH K21
NORMAL SPEED
RELAY
6450.6-046450.6-04
6450.6-046450.6-04
B8y
PRESSURE
SWITCH
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-04
5B9508
PRESSURE
SWITCH
X18350
F165AF4840A
S221
EVAPORATOR
CONTROLLER
A6000
ENGINE
CONTROL
MODULE (DME) 6450.6-04
P90
FRONT POWER
DISTRIBUTION BOXP90
FRONT POWER
DISTRIBUTION BOX F16
5A
M9
AUXILIARY FAN
MOTOR 6450.6-04
P90
FRONT POWER
DISTRIBUTION BOX
K19
COMPRESSOR
CONTROL RELAY 6450.6-02
F397.5AF165A
Y2
AIR CONDITIONING
COMPRESSOR 6450.6-02
A6000
ENGINE CONTROL
MODULE
(DME) 6450.6-02
K4
BLOWER RELAY 6450.6-00
F2030A
S220
AIR CONDITION-
ING/RECIRCULAT-
ING SWITCH
ASSEMBLY
41
R11
BLOWER
RESISTORS 6450.6-00
S75
BLOWER SWITCH 6450.6-00
M30
BLOWER MOTOR 6450.6-00
35268
S221
EVAPORATOR
CONTROLLER3
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-02B14
EVAPORATOR
TEMPERATURE
SENSOR 6450.6-01
26
X18349
X18350
7 X18349
M111
FRESH AIR
RECIRCULATION
MOTOR 6450.6-01
S531
TEMPERATURE
WHEEL SWITCH 6450.6-01
A605
FUSE HOLDER
F953
2A
Y4z
WATER VALVE 6450.6-01
S2
IGNITION SWITCH 6450.6-006450.6-02 6450.6-00
X18350
5 X18350
6450.6-01
Z3 ROADSTER
6450.6 INTEGRATED HEATING– AND CLIMATE CONTROL

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M ROADSTER
P97
AUXILIARY FUSE
BOX
K21
NORMAL SPEED
RELAY
S36
TEMPERATURE
SWITCHK22
HIGH SPEED
RELAY 6450.6-08
6450.6-086450.6-08
F165AF4840A
A6000
ENGINE
CONTROL
MODULE (DME) 6450.6-08
P90
FRONT POWER
DISTRIBUTION BOXP90
FRONT POWER
DISTRIBUTION BOX F16
5A
M9
AUXILIARY FAN
MOTOR 6450.6-08
P90
FRONT POWER
DISTRIBUTION BOX
K19
COMPRESSOR
CONTROL RELAY 6450.6-07
F397.5AF165A
Y2
AIR CONDITIONING
COMPRESSOR 6450.6-07
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-07
K4
BLOWER RELAY 6450.6-05 F20
30A
S220
AIR CONDITION-
ING/RECIRCULAT-
ING SWITCH
ASSEMBLY
43
R11
BLOWER
RESISTORS 6450.6-05
S75
BLOWER SWITCH 6450.6-05
M30
BLOWER MOTOR 6450.6-05
1258
S221
EVAPORATOR
CONTROLLER
3
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-05
B14
EVAPORATOR
TEMPERATURE
SENSOR 6450.6-06
26
X18349
X18350
7 X18349
M111
FRESH AIR
RECIRCULATION
MOTOR 6450.6-06
S531
TEMPERATURE
WHEEL SWITCH 6450.6-06
A605
FUSE HOLDER
F953
2A
S2
IGNITION SWITCH 6450.6-056450.6-07 6450.6-05
6450.6-06
K33a
AIR CONDITIONING
RELAY, MOTRONIC 6450.6-05
6
Y4z
WATER VALVE 6450.6-06
B9
INTERMEDIATE
PRESSURE
SWITCHB8y
PRESSURE
SWITCH
5 X18350
B9508
PRESSURE
SWITCH 6450.6-08 6450.6-08
NOT USEDNOT USED 6450.6-08
6450.6-08
AUXILIARY FAN
INTEGRATED HEATING– AND CLIMATE CONTROL



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Pin Assignments (Z3 Roadster)
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E = Input, A = Output, M = GroundX18349
8 Pins, black
X183506 Pins, black
X18349
Pin Type Description/Function Connection
1
ETerminal 15Heating blower relay
2AActivate compressor clutchEngine control module (DME)
3ABlower level 1 (air conditioning)Blower resistor
4ETerminal 15Heating blower relay
5ABlower level 1 (air-recirculation)Blower resistor
6MGround for function lightsGround point
7ETerminal 15Heating blower relay
8AActivate fresh air-recirculationFresh air-recirculation motor
X18350
Pin Type Description/Function Connection
1
Not used
2MGroundGround point
3EClimate-ON-signalAir conditioning/recirculated air operating
unit
4Not used
5AActivate A/C compressorPressure switch
6EEvaporator temperatureEvaporator temperature sensor



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Pin Assignments (M Roadster)
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E = Input, A = Output, M = GroundX18349
8 Pins, black
X183506 Pins, black
X18349
Pin Type Description/Function Connection
1
MGroundGround point
2AA/C-ON-signalEvaporator controller
3AA/C-ON-signalNormal speed relay
4ETerminal 15Heating blower relay
5ABlower level 1 (air-recirculation)Blower resistor
6MGround for function lightsGround point
7ETerminal 15Heating blower relay
8AActivate fresh air-recirculationFresh air-recirculation motor
X18350
Pin Type Description/Function Connection
1
Not used
2MGroundGround point
3EClimate-ON-signalAir conditioning/recirculated air operating
unit
4Not used
5AActivate A/C compressorPressure switch
6EEvaporator temperatureEvaporator temperature sensor






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INTEGRATED HEATING– AND CLIMATE CONTROL


X11287
X11287
F9532A
6450.6-00
X7711
GROUND
DISTRIBUTION
0670.4
6450.6-00
.5 GN/BR1.5 GN/BR1.5 GN/BR
1.5 GE1 SW/VI
X18350
X683091 GN/BR
S531
TEMPERATURE
WHEEL SWITCH
0) NORMAL
TEMPERATURE
1) MAXIMUM
TEMPERATURE
A605
FUSE HOLDER
Y4z
WATER VALVES221
EVAPORATOR
CONTROLLER
B14
EVAPORATOR
TEMPERATURE
SENSORM111
FRESH AIR
RECIRCULATION
MOTOR S220
AIR CONDITION-
ING/RECIRCULAT-
ING SWITCH
ASSEMBLY
0) OFF
1) AIR CONDI-
TIONING
2) AIR RECIRCU-
LATING
.5 BL4
X5115
2 1
X851
X853
.5 BL
X10054
2
.5 BL
X9633
X7712
X183506.75 SW/WS
147 X18349
X183491.5 GE.5 GN
.5 GN/BR
X151713 3285
3
2
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
6
GROUND
DISTRIBUTION
0670.4
X15172
X9633
GROUND
DISTRIBUTION
0670.4 6450.6-00 X5115
1(PARTIAL)6450.6-02
1 SW/VIX189
1 SW/VI
0101020201
Z3 ROADSTER






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INTEGRATED HEATING– AND CLIMATE CONTROL



01
6450.6-05
X7711
1 GN/BR
1 SW/VI
X18350
1 GN/BR
S221
EVAPORATOR
CONTROLLER
B14
EVAPORATOR
TEMPERATURE
SENSORM111
FRESH AIR
RECIRCULATION
MOTOR S220
AIR CONDITIONING/
RECIRCULATING
SWITCH ASSEMBLY
0) OFF
1) AIR CONDITION-
ING
2) AIR RECIRCULAT-
ING
X9633
X7712
X1835061 SW/WS
47 X18349
X183491.5 GE.5 GN
.5 GN/BR
X151713 285
3
2
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
6
GROUND
DISTRIBUTION
0670.4
X15172
X9633
GROUND
DISTRIBUTION
0670.4 6450.6-05 (PARTIAL)
6450.6-08
1 SW/VIX189
2
01
1.5 GE
3
1
GROUND
DISTRIBUTION
0670.4
6450.6-05
X68309(PARTIAL)
.5 GN/BR
1 X11287
X112874
A605
FUSE HOLDER
2 X5115
X5115
.5 BL1
0
1
X85GROUND
DISTRIBUTION
0670.4
X100542
1 X85
Y4z
WATER VALVE
3 1 BL
0
20
F9532AS531
TEMPERATURE
WHEEL SWITCH
0) NORMAL
TEMPERATURE
1) MAXIMUM
TEMPERATURE
.5 BL
M ROADSTER

6–CYLINDER9






6581.3 BOARD COMPUTER (BC – LOW) !""


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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






COMPONENT LOCATION CHART





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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