1999 BMW M3 relay




.5 GN/WS2.5 GN
85







15I
K4
BLOWER RELAY
4 8 6
X582
GROUND
DISTRIBUTION
0670.4
POWER
DISTRIBUTION
0670.2
.35 GN7 X33
6
X203
S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
15
86
8730
FUSE DETAILS
0670.3
2.5 GN/BRX58
2.5 GNNOT USED
6412.10 PARK VENTILATION WITH HR
2.5 GN/BR
X173
31X209
F2030A
P90
FRONT POWER
DISTRIBUTION BOX
X10016
20
X9051
1.5 SW5 X905
X352
S75
BLOWER SWITCH
0) OFF
1) SLOW
2) MEDIUM
3) FAST
4) MAXIMUM
2.5 RT/GN2.5 RT/GN
2
1.5 GN4
2.5 GN/GR3
2.5 BL
2.5 RT/GN
210
3 4
2
10
32
10
3

R11
BLOWER
RESISTORS
1) OPENS IF
RESISTORS
OVERHEAT






2 X816
1 X816
X6078
X999
2 1 4X3512 11X607
4 6
K450
PARK VENTILATION
RELAY
N4
ON–BOARD
COMPUTER
3) VENTILATION M30
BLOWER MOTOR
X1071
14 X906
X18165
3 2.5 BL2.5 BL
2.5 GN 1.5 GN
.5 SW/WS/GE
.5 SW/WS/GE .5 SW/WS/GE
0.7 1 2.2 2.5 GN/GR
2
X10103
3 2.5 RT/GN 2.5 RT/GN
GROUND
DISTRIBUTION
0670.42.5 GN/GR1.5 SW
NOT USED
.5 GN87 86
X9042 1 43
2.5 GN 2.5 GN/GR 2.5 BL1.5 SW
5
2.5 GN
2.5 GN
31
1
X10012








6412.20 PARK VENTILATION WITH IHKA E36
P90
FRONT POWER
DISTRIBUTION BOX
8 X586
X1001620
42
FUSE DETAILS
0670.3
2.5 RT/GN
X8171GROUND
DISTRIBUTION
0670.4
X10012
K4
BLOWER RELAY
X58
4
N2
FINAL STAGE UNIT
M30
BLOWER MOTOR
31
S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
67
V6
UNCOUPLING
DIODEX33
.35 GN
X1405
1
X14061
GROUND
DISTRIBUTION
0670.4
X173
X352
1 X816
51
2.5 GN/BR
2 2.5 GN/BR
2.5 GN
2.5 GN .5 GN/WS
X671
3X6712.5 BR/GE 2.5 GN/GE
A115
AUTOMATIC
CLIMATE CONTROL
MODULE 19 .35 BL/RT
20 .35 GN/BR8 .35 SW/WS/GE
X1257
12 11X35
.5 GN.5 SW/WS/GEX107114
N4
ON–BOARD
COMPUTER
3) VENTILATION
2 X6078
K450
PARK VENTILATION
RELAY
X607
2.5 GN.5 SW/WS/GE.35 GN2.5 RT/GN
POWER
DISTRIBUTION
0670.2
5
.35 GN
X203
85 86
6412.20-0087 302.5 RT/GN
X18165
.5 SW/WS/GE 6412.20-00
64
X10103
3 .5 BL/VI NOT USED
X209
F2030A

2
10
32
10
3
GROUND
DISTRIBUTION
0670.4
X10012
X152721 23GROUND
DISTRIBUTION
0670.430
8786
85

X292
7





2 X2928
6424.0 REAR WINDOW DEFOGGER/ANTENNA






E9
REAR DEFOGGER I P90
FRONT POWER
DISTRIBUTION BOX F6
30A

K13
REAR DEFOGGER
RELAY
86 30
87
2.5 SW
.5 BL/SW
(+)
N9
RADIOA18
HIFI AMPLIFIER
.5 WS .5 WS
.5 WS
2.5 SW
6 X1001712 X10015
46
X359 X13
1 X3791 X424
16 X181262X605
F235A

FUSE DETAILS
0670.3FUSE DETAILS
0670.3
85X830
A115
AUTOMATIC
CLIMATE CONTROL
MODULE
2.5 SW X1226.35 BR/GE
A32y
THERMOSTAT
.5 BR/WS
12 X15274 X899
WITH HR WITH IHKA

X292





2 X2928
REAR WINDOW DEFOGGER/ANTENNA





P90
FRONT POWER
DISTRIBUTION BOX F6
30A

K13
REAR DEFOGGER
RELAY
86
8530
87
2.5 SW
.5 BL/SW
6 X1001712 X10015
46
9 X13
F235A

FUSE DETAILS
0670.3FUSE DETAILS
0670.3
2.5 SW
X1226
2.5 SW 2.5 SW
X379N8
ANTENNA
AMPLIFIER AM/FM 1X4241
A18
HIFI AMPLIFIER
2 X605N9
RADIO
16 X18126
.5 WS .5 WS
.5 WS
X830
X11205
X11208
E100y
HARD TOP
CONNECTOR 2
2
2
2.5 SW 7
X35
A115
AUTOMATIC
CLIMATE CONTROL
MODULE
.35 BR/GE
A32y
THERMOSTAT
.5 BR/WS
12 X15274 X899
WITH HR WITH IHKA
6424.0-02
CONVERTIBLE

X1780
2





4 X1780
REAR WINDOW DEFOGGER/ANTENNA





P90
FRONT POWER
DISTRIBUTION BOX
K128
SPATIAL SOUND
RELAY
.35 VI/GE
26 X10018
6
X10266
F435A

FUSE DETAILS
0670.3
2 X100924 6
A96
CONVERTIBLE TOP
CONTROL MODULE
8 X13159
.35 BR/GE
X1783
X1314332
X13006
1 X13143
X131421
2 X13142
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4M105
REAR WINDOW
BLOWER
S196
REAR WINDOW
BLOWER MICRO
SWITCH
1) CONVERTIBLE
TOP RAISED
UP
2) CONVERTIBLE
TOP DOWN
2.5 RT/SW
.5 GN/SW
21
X10092
A18
HIFI AMPLIFIER
6424.0-01
2.5 SW
.35 BR/GE.35 BR/GEK99
REAR WINDOW
BLOWER RELAY
CONVERTIBLE
2

 


6450.7-00
6450.7-01S36
TEMPERATURE
SWITCH M30
BLOWER MOTOR 6450.7-006450.7-00
5
A2w
INSTRUMENT
CLUSTER 6450.7-0210
2221 23A115
AUTOMATIC
CLIMATE CONTROL
MODULE
3
B11
LH HEAT EX-
CHANGER
TEMPERATURE
SENSORA6000
ENGINE CONTROL
MODULE (DME) 4
1
2
B12
RH HEAT EX-
CHANGER
TEMPERATURE
SENSORB13
OUTSIDE
TEMPERATURE
SENSOR
B14
EVAPORATOR
TEMPERATURE
SENSOR 6450.7-02
6450.7-04 6450.7-02 X1527
F2030A
K13
REAR DEFOGGER
RELAY
6424.0
16M36
FRESH AIR FLAP
MOTOR
F315AF235A
181111 Y4
WATER VALVE
ASSEMBLY
B9
INTERMEDIATE
PRESSURE
SWITCH F16
5AF4130A
6450.7-05
K19
COMPRESSOR
CONTROL RELAY
Y2
AIR CONDITIONING
COMPRESSOR 6450.7-04
6450.7-04
B8y
PRESSURE
SWITCH
K22
HIGH SPEED
RELAY
1715A
X1527
P90
FRONT POWER
DISTRIBUTION BOX
6
N2
FINAL STAGE UNIT 6450.7-00
149241225
20 86450.7-00K4
BLOWER RELAY
A6000
ENGINE CONTROL
MODULE (DME) 6450.7-05
P90
FRONT POWER
DISTRIBUTION BOX
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
M9
AUXILIARY FAN
MOTOR
K21
NORMAL SPEED
RELAY
S36y
DOUBLE
TEMPERATURE
SWITCHB9
INTERMEDIATE
PRESSURE
SWITCH F16
5AF4840A
6450.7-06
B8y
PRESSURE
SWITCHK22
HIGH SPEED
RELAY 6450.7-06
A6000
ENGINE
CONTROL
MODULE (DME) 6450.7-06
P97
AUXILIARY FUSE
BOX
M9
AUXILIARY FAN
MOTOR
K21
NORMAL SPEED
RELAY
F165AF397.5AP90
FRONT POWER
DISTRIBUTION BOX
6450.7-04
A6000
ENGINE CONTROL
MODULE (DME) 6450.7-06
713
NOT USED
19LIGHT SWITCH
DETAILS
6300.0 58g
START
1240.030h
B9508
PRESSURE
SWITCH6450.7-05 6450.7-05
6450.7-05
6450.7-05AUXILIARY FAN –
4–CYLINDER ENGINE
3 2 1
6450.7-03 6450.7-03 6450.7-03 6450.7-03
M35
DEFROSTER FLAP
MOTORM44
REGULATION FLAP
MOTORM46
REAR
RECIRCULATION
FLAP MOTORX1527
M40
RECIRCULATION
FLAP MOTORB9508
PRESSURE
SWITCH6450.7-06 6450.7-066450.7-06 P90
FRONT POWER
DISTRIBUTION BOX
S2
IGNITION SWITCH
15
AUXILIARY FAN –
6–CYLINDER ENGINE
PARK VENTILATION
WITH IHKA E36
6412.20
26
X1527
TXD
6450.7 INTEGRATED CLIMATE REGULATION (IHKA E36)

 



Pin Assignments

E = Input, A = Output, M = Ground
X1527
Pin Type Description/Function Connection
1
EOutside temperatureOutside temperature sensor
2EEvaporator temperatureEvaporator temperature sensor
3EHeater temperature, leftLeft heat exchanger temperature sensor
4EHeater temperature, rightRight heat exchanger temperature sensor
5EVehicle speed signal (Speedometer output
signal)Instrument cluster
6ERPM speed signal TDEngine control module (DME)
7EIllumination inputIllumination
8AOutput signalOn-board computer
9ETerminal 50Starter
10ARPM speed increaseEngine control module (DME)
11AA/C compressor activationPressure switch
12ARear window signalRear window
13AWater valve activation, rightRight water valve
14AFresh air flap motor activationFresh air flap motor
15AFresh air flap motor activationFresh air flap motor
16AFresh air flap motor activationFresh air flap motor
17AFresh air flap motor activationFresh air flap motor
18AWater valve activation, leftLeft water valve
19AA/C fan activationA/C fan final stage
20EIndependent ventilationRelay box
21MGroundControl panel
22MGroundMixing actuator
23MGroundControl panel
24ETerminal 15Fuse
25ETerminal 30Fuse
26E/ADiagnostic data linkData link connector