2000 BMW Z3M COUPE air conditioning







Pin Assignments (Z3 Versions)




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 clutchInstrument cluster
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







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
3EClimate-ON-signalAir conditioning/recirculated air operating
unit
4Not used
5AActivate A/C compressorPressure switch
6EEvaporator temperatureEvaporator temperature sensor





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
X163
X600042986
85
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
19 X6000
5
6 X20
A6000
ENGINE CONTROL
MODULE (DME) .5 VI/GR
.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 CONDITION-
ING
2) AIR RECIRCULAT-
ING
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
1 X11287
X112874
A605
FUSE HOLDER
2 X5115
X5115
.5 BL1
0
1
X85
GROUND
DISTRIBUTION
0670.4
X100542
1 X85
Y4z
WATER VALVE
3 .5 BL
0
20
F9532AS531
TEMPERATURE
WHEEL SWITCH
0) NORMAL
TEMPERATURE
1) MAXIMUM
TEMPERATURE
.5 BL
M VERSIONS
X9633



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

4 X20
74 X6000
A6000
ENGINE CONTROL
MODULE (DME) .5 SW/BL
1
P90
FRONT POWER
DISTRIBUTION BOX


M VERSIONS



COMPONENT LOCATION CHART











COMP.8500.0 7100.0LOCATION DESCRIPTION
H70 . . LEFT REAR MID–HIGH RANGE SPEAKER in rear speaker box

H71 . .
RIGHT REAR MID–HIGH RANGE
SPEAKER . . . . . . . . . . . . . . . . . . . . . . . . . .
in rear speaker box





H500 .
REAR WOOFER . . . . . . . . . . . . . . . . . . . . . . .
in rear speaker box (ROADSTER)



H500 .

REAR WOOFER . . . . . . . . . . . . . . . . . . . . . . .

in rear speaker box (COUPE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40-3


I1008 . SEAT MAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . in passenger’s seat area
K2 . . . . HORN RELAY . . . . . . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-2
K4 . . . . BLOWER RELAY . . . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-2

K9 . . . .
UNLOADER RELAY, TERMINAL 15 . . . . . .
rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . .
09-3

K16 . . HAZARD FLASHER RELAY . . . . . . . . . . . . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-2
K19 . . COMPRESSOR CONTROL RELAY . . . . . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-3
K21 . . NORMAL SPEED RELAY . . . . . . . . . . . . . . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-3
K22 . . HIGH SPEED RELAY . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-3

K25 . .

RIGHT PARK LIGHT/LICENSE PLATE
LIGHT RELAY . . . . . . . . . . . . . . . . . . . . . . .

rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . .

08-2



K26 . .

LEFT PARK LIGHT RELAY . . . . . . . . . . . . . .

rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . .

08-2


K33a . AIR CONDITIONING RELAY, MOTRONIC . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-2
K46 . . HIGH BEAM LIGHT RELAY . . . . . . . . . . . . . footwell, driver’s side (USA AND CANADA LATE PRODUCTION) . . . . . . . . . . . . . . 19-1
K46z . DAY LIGHT RELAY MODULE . . . . . . . . . . . . footwell, driver’s side (CANADA EARLY PRODUCTION)

K47 . .
FRONT FOG LIGHT RELAY . . . . . . . . . . . . .
rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . .
09-2

K48 . .

LOW BEAM LIGHT RELAY . . . . . . . . . . . . . .

rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . .

09-2



COMPONENT LOCATION CHART











COMP.8500.0 7100.0LOCATION DESCRIPTION
S58 . . DRIVER’S SEAT BELT SWITCH . . . . . . . . . in LH front seat belt buckle

S59 . .
PASSENGER’S SEAT BELT SWITCH . . . .
in RH front seat belt buckle



S75 . . BLOWER SWITCH . . . . . . . . . . . . . . . . . . . . . center of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-3
S76 . . REAR WINDOW DEFOGGER SWITCH . . . center console


S117 . .

LUGGAGE COMPARTMENT LID LOCKING
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . .
in lift gate




S126y DRIVER’S POWER WINDOW SWITCH . . . center console near gearshift lever

S127y
PASSENGER’S POWER WINDOW
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . .
center console near gearshift lever




S143 . CONVERTIBLE TOP ACTUATING SWITCH center console

S164 .
CONVERTIBLE TOP END–POSITION
MICRO SWITCH . . . . . . . . . . . . . . . . . . . . .
at convertible top linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17-3



S198 .
JET HEATER THERMOSWITCH . . . . . . . . .
on front RH wheel well



S220 . AIR CONDITIONING/RECIRCULATING
SWITCH ASSEMBLY . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-3

S221 .

EVAPORATOR CONTROLLER . . . . . . . . . .

RH side of LH footwell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21-2


S232 . COMPRESSOR MAIN SWITCH . . . . . . . . . . TIRE INFLATION SYSTEM
S235 . STARTER IMMOBILIZATION SWITCH . . . . LH footwell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
S408 . INTERIOR LIGHT SWITCH . . . . . . . . . . . . . near interior rear view mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-2

S531 .
TEMPERATURE WHEEL SWITCH . . . . . . .
center of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21-3



S826 .

LUGGAGE COMPARTMENT LIGHT
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . .
underside of luggage compartment lid



S910 . DRIVER’S SEAT LIMIT SWITCH . . . . . . . . . in driver’s seatback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-3
S911 . . PASSENGER’S SEAT LIMIT SWITCH . . . . in passenger’s seatback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-3