2000 BMW Z3M COUPE climate control
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BMW NA
ELECTRICAL TROUBLESHOOTING
MANUAL
SERIES 3 – E36/7 (Z3 Roadster, Z3 Coupe,
M Roadster, and M Coupe)
SCHEMATICS MODEL YEAR 1999
0100.0 INDEX 0110.0 INTRODUCTION
0140.0 SYMBOLS
0670.0 POWER DISTRIBUTION CHART
0670.1 FUSE CHART
0670.2 POWER DISTRIBUTION 0670.3 FUSE DETAILS 0670.4 GROUND DISTRIBUTION
0670.5 DATA LINK
1210.17
ENGINE CONTROL SYSTEM
MS41.1 (6–CYLINDER S52)
1210.25 ENGINE CONTROL SYSTEM
MS42.1 (6–CYLINDER M52)
1230.0 CHARGING SYSTEM 1240.0 START
1290.0 E–BOX FAN
2460.2
ELECTRONIC TRANSMISSION
CONTROL (EGS A4S 270R)
3234.0 SUPPLEMENTAL RESTRAINT
SYSTEM (AIR BAG)
3450.1 SLIP CONTROL (ABS/ASC)
3452.1
DYNAMIC STABILITY CONTROL
(DSC III)
3614.0 TIRE INFLATION SYSTEM
5116.0 POWER MIRRORS
5126.0 ZKE CENTRAL LOCKING (ZV) 5133.0 ZKE POWER WINDOWS (FH) 5200.0 POWER SEATS 5203.0 HEATED SEATS
5410.5 POWER TILT SUNROOF
5430.2
ELECTRO–HYDRAULIC
CONVERTIBLE TOP
6100.0 CENTRAL BODY ELECTRONICS
(ZKE IV)
6133.0 HORN
6135.1
DRIVE–AWAY PROTECTION
(EWS III)
6160.1
WIPER/WASHER MODULE
(WWM)
6167.1 HEADLIGHT WASHER (SRA)
6169.0
WINDSHIELD WASHER JET
HEATERS
6211.0 INSTRUMENT CLUSTER 6213.1 ANALOG CLOCK 6213.3 DIGITAL CLOCK 6300.0 LIGHT SWITCH DETAILS
6312.0 HEADLIGHTS/FOG LIGHTS
6313.0 TURN/HAZARD LIGHTS
6314.0 PARK/TAIL/UNDERHOOD LIGHTS
6320.0 LICENSE PLATE/LUGGAGE
COMPARTMENT LIGHTS
6322.0 BACK UP LIGHTS
6325.0 BRAKE LIGHTS
6330.3 INTERIOR LIGHTS
6332.0 INTERIOR ACCESSORIES
6350.0 CRASH CONTROL MODULE 6424.0 REAR WINDOW DEFOGGER
6450.6
INTEGRATED HEATING– AND
CLIMATE CONTROL
6510.1 RADIO/HIFI
6561.0
CELLULAR TELEPHONE
(PROVISIONS)
6571.0 CRUISE CONTROL (TEMPOMAT) 6575.2 ANTI–THEFT SYSTEM (ALPINE) 6581.3 BOARD COMPUTER (BC – LOW) 7000.0 COMPONENT LOCATION CHART
7100.0 COMPONENT LOCATION VIEWS
8000.0 SPLICE LOCATION VIEWS
8500.0 CONNECTOR VIEWS
Page 6 of 382
INDEX
HIGH RANGE SPEAKER, LEFT REAR, H56 6510.1-03. . . . . . . . . . . . . . . . . .
HIGH RANGE SPEAKER, RIGHT FRONT, H50 6510.1. . . . . . . . . . . . . . . . . .
HIGH RANGE SPEAKER, RIGHT REAR, H53 6510.1-03. . . . . . . . . . . . . . . . .
HIGH SPEED RELAY, K22 6450.6-03. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HIGH SPEED RELAY, K22 6450.6-07. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORN 6133.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORN RELAY, K2 6133.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORN SWITCH, S4 6133.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORN, LEFT, H2 6133.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORN, RIGHT, H3 6133.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HOT FILM AIR MASS METER, B6207 1210.17-05. . . . . . . . . . . . . . . . . . . . . .
HOT FILM AIR MASS METER, B6207 1210.25-05. . . . . . . . . . . . . . . . . . . . . .
IDLE SPEED CONTROL VALVE, Y6130 1210.17-01. . . . . . . . . . . . . . . . . . . .
IDLE SPEED CONTROL VALVE, Y6130 1210.25-03. . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 1, T6151 1210.17-03. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 1, T6151 1210.25-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 2, T6152 1210.17-03. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 2, T6152 1210.25-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 3, T6153 1210.17-03. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 3, T6153 1210.25-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 4, T6154 1210.17-03. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 4, T6154 1210.25-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 5, T6155 1210.17-03. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 5, T6155 1210.25-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 6, T6156 1210.17-03. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION COIL, CYL. 6, T6156 1210.25-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION SWITCH, S2 0670.2-04. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION SWITCH, S2 0670.2-08. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INDEX 0100.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INDEX 0100.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUMENT CLUSTER 6211.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUMENT CLUSTER, A2w 6211.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTAKE AIR TEMPERATURE SENSOR, B6205 1210.17-02. . . . . . . . . . . . . .
INTAKE AIR TEMPERATURE SENSOR, B6205 1210.25-07. . . . . . . . . . . . . .
INTEGRATED HEATING– AND CLIMATE CONTROL 6450.6. . . . . . . . . . . . . INTERIOR ACCESSORIES 6332.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTERIOR LIGHT SWITCH, S408 6330.3-00. . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTERIOR LIGHT, LEFT FRONT, E800 6330.3-00. . . . . . . . . . . . . . . . . . . . . . .
INTERIOR LIGHTS 6330.3-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTERMEDIATE PRESSURE SWITCH, B9 6450.6-03. . . . . . . . . . . . . . . . . . . .
INTERMEDIATE PRESSURE SWITCH, B9 6450.6-07. . . . . . . . . . . . . . . . . . . .
INTRODUCTION 0110.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
JET HEATER THERMOSWITCH, S198 6169.0-00. . . . . . . . . . . . . . . . . . . . . . .
KICK–DOWN SWITCH, S8507 2460.2-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
KNOCK SENSOR, B6240 1210.17-06. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
KNOCK SENSOR, B6240 1210.25-09. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEAKAGE DIAGNOSIS PUMP, Y6139 1210.25-04. . . . . . . . . . . . . . . . . . . . . .
LICENSE PLATE LIGHT, LEFT, E43 6320.0-01. . . . . . . . . . . . . . . . . . . . . . . . . .
LICENSE PLATE LIGHT, LEFT, E43 6320.0-02. . . . . . . . . . . . . . . . . . . . . . . . . .
LICENSE PLATE LIGHT, RIGHT, E44 6320.0-01. . . . . . . . . . . . . . . . . . . . . . . . .
LICENSE PLATE LIGHT, RIGHT, E44 6320.0-02. . . . . . . . . . . . . . . . . . . . . . . . .
LICENSE PLATE/LUGGAGE COMPARTMENT LIGHTS 6320.0-00. . . . . . . .
LIGHT ASSEMBLY, LEFT REAR, E16 0670.4-12. . . . . . . . . . . . . . . . . . . . . . . .
LIGHT ASSEMBLY, RIGHT REAR, E17 0670.4-12. . . . . . . . . . . . . . . . . . . . . . .
LIGHT SWITCH DETAILS 6300.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIGHT SWITCH, S8 6300.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOW BEAM LIGHT RELAY, K48 6312.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOW BEAM LIGHT, LEFT, E13 6312.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOW BEAM LIGHT, RIGHT, E14 6312.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOW RANGE SPEAKER, LEFT FRONT, H58 6510.1. . . . . . . . . . . . . . . . . . . .
LOW RANGE SPEAKER, LEFT REAR, H57 6510.1. . . . . . . . . . . . . . . . . . . . .
LOW RANGE SPEAKER, RIGHT FRONT, H51 6510.1. . . . . . . . . . . . . . . . . .
LOW RANGE SPEAKER, RIGHT REAR, H52 6510.1. . . . . . . . . . . . . . . . . . . .
LUGGAGE COMPARTMENT LID LOCKING SWITCH, S117 5126.0-05. . . . .
LUGGAGE COMPARTMENT LIGHT SWITCH, S826 6320.0-03. . . . . . . . . . .
LUGGAGE COMPARTMENT LIGHT, E32 6320.0-03. . . . . . . . . . . . . . . . . . . . .
LUGGAGE COMPARTMENT LOCK MOTOR, M17 5126.0-03. . . . . . . . . . . . .
LUGGAGE COMPARTMENT LOCK MOTOR, M17 5126.0-05. . . . . . . . . . . . .
MARKER LIGHT, LEFT FRONT, E21 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . . .
MARKER LIGHT, RIGHT FRONT, E22 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . .
Page 21 of 382
*15A
10A
6312.0
FUSE CHART
FUSES 1 TO 29
FUSE NUMBER
6313.0
6314.0
6320.0
6322.0TURN/HAZARD LIGHTS
BACK UP LIGHTS LICENSE PLATE/LUGGAGE COMPARTMENT LIGHTS PARK/TAIL/UNDERHOOD LIGHTS
6332.0INTERIOR ACCESSORIES
6424.0REAR WINDOW DEFOGGER
6450.6
6561.0
6571.0CRUISE CONTROL (TEMPOMAT) INTEGRATED HEATING– AND CLIMATE CONTROL
CELLULAR TELEPHONE (PROVISIONS) 6350.0CRASH CONTROL MODULE 6330.3INTERIOR LIGHTS 6325.0BRAKE LIGHTS HEADLIGHTS/FOG LIGHTS
6510.1RADIO/HIFI
6300.0LIGHT SWITCH DETAILS
6169.0WINDSHIELD WASHER JET HEATERS
6211.0INSTRUMENT CLUSTER
6213.3DIGITAL CLOCK12345 10 206 7 8 9 11 12 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29
30A 30A 15A 30A 20A 5A 30A 7.5A 5A 15A 5A 5A 5A 10A 5A 7.5A20A 15A 30A 5A 5A7.5A 30A 10A 10A30A M VERSIONS *
7.5A*5A
6167.1HEADLIGHT WASHER (SRA)
6213.1ANALOG CLOCK
Page 24 of 382
FUSE CHART
FUSES 30 TO 205
FUSE NUMBER
6313.0
6314.0
6320.0
6322.0TURN/HAZARD LIGHTS
BACK UP LIGHTS LICENSE PLATE/LUGGAGE COMPARTMENT LIGHTS PARK/TAIL/UNDERHOOD LIGHTS
6332.0INTERIOR ACCESSORIES
6424.0REAR WINDOW DEFOGGER
6450.6
6561.0
6571.0CRUISE CONTROL (TEMPOMAT) INTEGRATED HEATING– AND CLIMATE CONTROL
CELLULAR TELEPHONE (PROVISIONS) 6350.0CRASH CONTROL MODULE 6330.3INTERIOR LIGHTS 6325.0BRAKE LIGHTS 6312.0HEADLIGHTS/FOG LIGHTS
6510.1RADIO/HIFI
6300.0LIGHT SWITCH DETAILS
6169.0WINDSHIELD WASHER JET HEATERS
6211.0INSTRUMENT CLUSTER
6213.3DIGITAL CLOCK
39
7.5A 5A 30A 10A 15A 25A 30A 7.5A 30A 15A 15A 7.5A 15A30A 10A
40
38 37 36 35
5A 5A
40A
50A
30A
20A
30A
30A
30A 30A 30A
6213.1ANALOG CLOCK
6167.1HEADLIGHT WASHER (SRA)
Page 209 of 382
EARLY
PRODUCTION
19X1746
INSTRUMENT CLUSTER
INDICATORS
X4231
S31
PARK BRAKE
SWITCH
1) BRAKE SET
2) BRAKE NOT SET
17P90
FRONT POWER
DISTRIBUTION BOX
A2w
INSTRUMENT
CLUSTER 23
6X1721X173
CHARGING
SYSTEM
1230.0GROUND
DISTRIBUTION
0670.4
14 X10017
FUSE DETAILS
0670.3
F275A
2 1
.5 BL
.5 BL/BR/GE
PARK
BRAKE
A35y
BOARD
COMPUTER
(BC – LOW) X10245
Z3 VERSIONS
X16
16
25
4 .5 GR/SW/GE
HEADLIGHTS/FOG
LIGHTS
6312.0
.75 GE/BR
8
.5 WS/RT
X171
!
X17
X16
X1170
.35 WS/GN
15
7 X6002
TURN/HAZARD
LIGHTS
6313.0 D100
DATA LINK
CONNECTOR
.35 WS/SW
S220
AIR CONDITION-
ING/RECIRCULAT-
ING SWITCH
ASSEMBLY X18349
6
2
1 SW/VI
X189
X100545 .5 VI/GR
15
7
.5 SW/GRX271
1 SW/VI1 SW/VI
INTEGRATED
HEATING– AND
CLIMATE CONTROL
6450.6 A52
SLIP CONTROL
MODULE
(ABS/ASC)
X1628
28 X1746A65
DYNAMIC STABILITY
CONTROL UNIT (DSC) .5 BL/BR/GE
.5 BL/BR/GE
A65
DYNAMIC STABILITY
CONTROL UNIT
(DSC)WITH DSC
WITH DSC
Page 244 of 382
10/996450.6a2000.0
P90
FRONT POWER
DISTRIBUTION
BOX
K19
COMPRESSOR
CONTROL RELAY 6450.6-02
F397.5AF165A
Y2
AIR CONDITION-
ING COMPRES-
SOR 6450.6-02
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-02
K4
BLOWER RELAY 6450.6-00 F20
30A
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
3258
3
A2w
INSTRUMENT
CLUSTER 6450.6-01B14
EVAPORATOR
TEMPERATURE
SENSOR 6450.6-01
6 X18349
7 X18349
M111
FRESH AIR
RECIRCULATION
MOTOR 6450.6-01
S531
TEMPERATURE
WHEEL SWITCH 6450.6-01
A605
FUSE HOLDER
F953
2A
6450.6-02 6450.6-00
6450.6-01
6
Y4z
WATER VALVE 6450.6-01
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
A2w
INSTRUMENT
CLUSTER 6450.6-03
B9508
PRESSURE
SWITCH
F165AF4030A
S221
EVAPORATOR
CONTROLLER
5 X18350
F2410A
AUXILIARY FAN
2
X18350
Z3 VERSIONS
6450.6 INTEGRATED HEATING– AND CLIMATE CONTROL
Page 245 of 382
10/996450.6b2000
M VERSIONS
P97
AUXILIARY FUSE
BOX
K21
NORMAL SPEED
RELAY
S36
TEMPERATURE
SWITCHK22
HIGH SPEED
RELAY 6450.6-07
6450.6-076450.6-07
F165AF4840A
A6000
ENGINE
CONTROL
MODULE (DME) 6450.6-07
P90
FRONT POWER
DISTRIBUTION
BOXP90
FRONT POWER
DISTRIBUTION
BOX F16
5A
M9
AUXILIARY FAN
MOTOR 6450.6-07
P90
FRONT POWER
DISTRIBUTION
BOX
K19
COMPRESSOR
CONTROL RELAY 6450.6-06
F397.5AF165A
Y2
AIR CONDITION-
ING COMPRES-
SOR 6450.6-06
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-06
K4
BLOWER RELAY 6450.6-04 F20
30A
S220
AIR CONDITION-
ING/RECIRCULAT-
ING SWITCH
ASSEMBLY
43
R11
BLOWER
RESISTORS 6450.6-04
S75
BLOWER SWITCH 6450.6-04
M30
BLOWER MOTOR 6450.6-04
1258
S221
EVAPORATOR
CONTROLLER
3
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-04
B14
EVAPORATOR
TEMPERATURE
SENSOR 6450.6-05
26
X18349
X18350
7 X18349
M111
FRESH AIR
RECIRCULATION
MOTOR 6450.6-05
S531
TEMPERATURE
WHEEL SWITCH 6450.6-05
A605
FUSE HOLDER
F953
2A
S2
IGNITION SWITCH 6450.6-046450.6-06 6450.6-04
6450.6-05
K33a
AIR CONDITION-
ING RELAY,
MOTRONIC 6450.6-04
6
Y4z
WATER VALVE 6450.6-05
B9
INTERMEDIATE
PRESSURE
SWITCHB8y
PRESSURE
SWITCH
5 X18350
B9508
PRESSURE
SWITCH 6450.6-07 6450.6-07
NOT USEDNOT USED 6450.6-07
6450.6-07
AUXILIARY FAN
INTEGRATED HEATING– AND CLIMATE CONTROL
Page 247 of 382
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