2001 BMW Z3M COUPE Electrical Troubleshooting Manual






Pin Assignments (M Versions)




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
3EA/C-ON-signalAir conditioning/recirculating switch
assembly
4Not used
5AActivate A/C compressorPressure switch
6EEvaporator temperatureEvaporator temperature sensor



POWER, AIR FLOW CONTROL










INTEGRATED HEATING– AND CLIMATE CONTROL
X1001620
8P90
FRONT POWER
DISTRIBUTION BOX F20
30A
X1429
X582 4
3 2 1 7 X905
X1328716 X58
2 X13233
3 2 1 4 X904
X100547
4 X905
86
8530
87FUSE DETAILS
0670.3
K4
BLOWER RELAY
2.5 GN/BR
2.5 GN/BR
2.5 BL
2.5 BL
2.5 BL 2.5 GN 1.5 SW1.5 GE
M30
BLOWER MOTOR
GROUND
DISTRIBUTION
0670.4 GROUND
DISTRIBUTION
0670.4R11
BLOWER
RESISTORS
1) OPENS IF
RESISTORS
OVERHEAT 1



S75
BLOWER SWITCH
0) OFF
1) SLOW
2) MEDIUM
3) FAST
4) MAXIMUM
X1435
1.5 GE
6450.6-01 X683092.5 GN/BR
6450.6-01(PARTIAL)
X13004
1.5 GE 1.5 GE
210
3 4
X9633
X100178F24
10A
FUSE DETAILS
0670.3
Z3 VERSIONS













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
X13004
X7712
X183506
.75 SW/WS
147 X18349
X18349
1.5 GE.5 GN
.5 GN/BR
X151713 3285
3
2
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
6
GROUND
DISTRIBUTION
0670.4
X15172
X13004
GROUND
DISTRIBUTION
0670.4 6450.6-00 X5115
1(PARTIAL)
1 SW/VIX1891 SW/VI
0101020201
X9633
X10054
A2w
INSTRUMENT
CLUSTER
5
X271
6
.5 VI/GR
Z3 VERSIONS




COMPRESSOR CONTROLS
INTEGRATED HEATING– AND CLIMATE CONTROL











15

F165A
30
87
P90
FRONT POWER
DISTRIBUTION BOX F39
7.5A
18 X10018
FUSE DETAILS
0670.3
.75 SW
2
1
21
.5 SW/BL
5 X51
Y2
AIR CONDITIONING
COMPRESSOR
1) NORMAL
TEMPERATURE
2) HIGH
TEMPERATUREK19
COMPRESSOR
CONTROL RELAY
A6000
ENGINE CONTROL
MODULE (DME) FUSE DETAILS
0670.3
6
4 X51
12 X10016
X10241
X600042986
85
Z3 VERSIONS

INTEGRATED HEATING– AND CLIMATE CONTROL

AUXILIARY FAN












.5 SW/GN
X19022
1 B9
INTERMEDIATE
PRESSURE
SWITCH
1) ABOVE 18 BAR
PRESSURE
2) 15 BAR
PRESSURE
30
30K22
HIGH SPEED
RELAYK21
NORMAL SPEED
RELAY
X872 .5 SW/GR
2.5 SW/BL
X190222 4
1
S36
TEMPERATURE
SWITCH
1) OPEN
2) ABOVE 99
DEGREES C
3) ABOVE 91
DEGREES C
4) OPEN M9
AUXILIARY FAN
MOTOR
8X5366 X524
X127286
87a 858786
85
X127
3
X165
X1001612
42X528
X1001820
FUSE DETAILS
0670.3
2.5 GN/RT
X10027
GROUND
DISTRIBUTION
0670.4
X53
.5 SW/GR
7 X271
A2w
INSTRUMENT
CLUSTER
.5 SW/GR
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
S221
EVAPORATOR
CONTROLLER
.5 VI
.5 SW/GE1
4 X10054
X183505GROUND
DISTRIBUTION
0670.4
B9508
PRESSURE
SWITCH
87
.5 SW/GR4 BL
4
X1022
.5 SW/GR25
X165
GROUND
DISTRIBUTION
0670.4
P90
FRONT POWER
DISTRIBUTION BOX
X1001612
FUSE DETAILS
0670.3
X166
15
X873
F165A
34
12F40
30AF165A
.5 SW/GR
6450.6-03
.5 SW/GR
5
6450.6-03
12
34
2 1
FUSE DETAILS
0670.3
Z3 VERSIONS

X166
M30
BLOWER
MOTOR1.5 GE


POWER, AIR FLOW CONTROL










INTEGRATED HEATING– AND CLIMATE CONTROL
X1001620
8 2.5 GNP90
FRONT POWER
DISTRIBUTION BOX F20
30A
X1429
X582 4
3 2 1 7 X905
X1328716 X58
2 X13233
3 2 1 4 X904
X100547 7 X33
4 X905
S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
1 X209
86
8530
87FUSE DETAILS
0670.3
K4
BLOWER RELAY
2.5 GN/BR
2.5 GN/BR
2.5 BL
2.5 BL
2.5 BL 2.5 GN 1.5 SW1.5 GE
GROUND
DISTRIBUTION
0670.4 GROUND
DISTRIBUTION
0670.4R11
BLOWER
RESISTORS
1) OPENS IF
RESISTORS
OVERHEAT


S75
BLOWER SWITCH
0) OFF
1) SLOW
2) MEDIUM
3) FAST
4) MAXIMUM
POWER DISTRIBUTION
0670.2
X1435
1.5 GE
6450.6-05 X68309
2.5 GN/BR
6450.6-05(PARTIAL)
1.5 GE
2.5 GN/BR
X1280
2 8 X50
6
X504
K33a
AIR CONDITIONING
RELAY, MOTRONIC30 86
87 85
GROUND
DISTRIBUTION
0670.4
6 X271
5
A2w
INSTRUMENT
CLUSTER
.5 SW/VIX10054
2 X35
X353
X189
6450.6-05
X9633
1.5 GE 2.5 GN/BR .5 SW/VI1.5 SW/VI(PARTIAL)
1 SW/VI
1
2
10
3
210
3 4
M VERSIONS
X9633

X166












INTEGRATED HEATING– AND CLIMATE CONTROL


01
6450.6-04
X7711
1 GN/BR
1 SW/VI
X18350
1.5 GN/BR
S221
EVAPORATOR
CONTROLLER
B14
EVAPORATOR
TEMPERATURE
SENSORM111
FRESH AIR
RECIRCULATION
MOTOR S220
AIR CONDITIONING/
RECIRCULATING
SWITCH ASSEMBLY
0) OFF
1) AIR
CONDITIONING
2) AIR
RECIRCULATING
X7712
X1835061 SW/WS
47 X18349
X18349
1.5 GE.5 GN
.5 GN/BR
X151713 285
3
2
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
6
GROUND
DISTRIBUTION
0670.4
X15172
GROUND
DISTRIBUTION
0670.4 6450.6-04 (PARTIAL)
6450.6-07
1 SW/VIX189
2
01
1.5 GE
3
1
GROUND
DISTRIBUTION
0670.4
6450.6-04
X68309(PARTIAL)
.5 GN/BR
0
20
M VERSIONS
6450.6-06



COMPRESSOR CONTROL AND WATER SUPPLY
INTEGRATED HEATING– AND CLIMATE CONTROL












F165A
30
87
F397.5A
18 X10018
FUSE DETAILS
0670.3
.75 SW
2
1
2
.5 SW/BL
5 X51
Y2
AIR CONDITIONING
COMPRESSOR
1) NORMAL
TEMPERATURE
2) HIGH
TEMPERATUREK19
COMPRESSOR
CONTROL RELAY FUSE DETAILS
0670.3
6
4 X51
12 X10016
X10241
86
85
15

29 X60004
A6000
ENGINE CONTROL
MODULE (DME)
1
P90
FRONT POWER
DISTRIBUTION BOX

M VERSIONS
.5 GN/BR
1 X11287
X112874
A605
FUSE HOLDER
2 X5115
X5115.5 BL1
0
1
X85
GROUND DISTRIBUTION
0670.4
X100542
8 X1602
Y4z
WATER VALVE
2.5 BL
F9532AS531
TEMPERATURE
WHEEL SWITCH
0) NORMAL
TEMPERATURE
1) MAXIMUM
TEMPERATURE .5 BL
X9633
6450.6-06
2
1 X85
30
87
F5430A
8 X19017
54 X1602
K104
AIR CONDITIONING
RELAY/AUXILIARY
WATER PUMP FUSE DETAILS
0670.3
686
85
87a
.75 BL
X122
GROUND
DISTRIBUTION
0670.4
M37a
AUXILIARY WATER
PUMP
1
X166
2 X122
.75 GN/WS
GROUND
DISTRIBUTION
0670.4