1999 BMW M3 Electrical Troubleshooting Manual









GLOVE BOX LIGHT/CASSETTE BOX/ASHTRAY LIGHT/CHARGING SOCKET/CIGAR LIGHTER
6F33
10A
X5421
2 X542
X779
CHARGING SOCKET+
–
.75 BR
X1833631 X18336
E42
GLOVE BOX LIGHT
1) GLOVE BOX
OPEN
2) GLOVE BOX
CLOSED
.5 BR
GROUND
DISTRIBUTION
0670.4
FUSE DETAILS
0670.3
X10012
2 1
28F44
15A
FUSE DETAILS
0670.3
X10018
P90
FRONT POWER
DISTRIBUTION BOX
11X13252
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
21
2 X336
1.5 VI/SW
.75 VI/SW
X183363 1 X18336
E42
GLOVE BOX LIGHT
1) GLOVE BOX
OPEN
2) GLOVE BOX
CLOSEDE34
FRONT DOME
LIGHT/MAP READ-
ING ASSEMBLYX13
25
.75 VI/SW
.5 VI/SW
X10189
GROUND
DISTRIBUTION
0670.4
X10012
CONVERTIBLE











P90
FRONT POWER
DISTRIBUTION BOX
K16
HAZARD FLASHER
RELAY
GROUND
DISTRIBUTION
0670.4
TURN/HAZARD
LIGHTS
6313.0 FUSE DETAILS
0670.3F34
15A
.5 WS/BL/GE
6 X64
4 8 9 X64
1 BL/GN
.5 BL/GNX184
8 X10018
1.5 RT/SW/GE
1.5 RT/SW/GE
6350.0 CRASH CONTROL MODULE
X173
30
LA 31 WB

NOT USED







.5 WS/BL/GE
N17
CRASH CONTROL
MODULE30
6X65
X651
.5 BR/SW/GE LSCH
LM 31CS8
3
.5 BL/GN
TURN/HAZARD
LIGHTS
6313.0
WB 5 4BL
X101821A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
X132537
.35 BR/SW
X7434
X10010
GROUND
DISTRIBUTION
0670.4 NOT USED
.5 BR/BL
21
S18
HAZARD SWITCH
1) OFF
2) ON X516
2
X5163
.5 GR/RT
GROUND
DISTRIBUTION
0670.4 4 5 .5 BL/GN
2
1
X10012
7
2 .5 BL/GN/GE .5 BL/GN/GEX13025
8
X14
14
N12w
ANTI–THEFT
CONTROL MODULE
(ALPINE)
1.5 RT/SW/GE
LIGHT SWITCH
DETAILS
6300.0WB
9
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE







6410.5 HEATING CONTROL (HR)
P90
FRONT POWER
DISTRIBUTION BOX S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
7 X33
1 X209
2.5 GN
2.5 GN
X203
.35 GN
8POWER
DISTRIBUTION
0670.2
6
30
87 85
4X58
2
GROUND
DISTRIBUTION
0670.42.5 GN/BR
X35
2
X100176
31
1 X85
X853
X353
3 .5 BR/OR.5 GE/BRY4
WATER VALVE
ASSEMBLY
1
X899A32y
THERMOSTAT .5 GN/GEFUSE DETAILS
0670.3
X58K4
BLOWER RELAY
X173
2.5 GN/BR
X1001620
FUSE DETAILS
0670.3
.5 GE4 X35
.5 GN/GE
2
10
315
F2030AF235A
31
86

0.7 1





X7721
5X905
2.2 12 3 X904
X9051 2 3
S75
BLOWER SWITCH
0) OFF
1) SLOW
2) MEDIUM
3) FAST
4) MAXIMUM
R11
BLOWER
RESISTORS
1) OPENS IF
RESISTORS
OVERHEAT
4
X906
X9044
2.5 GN/GR 2.5 GN/GR
X816
2
1 X816
M30
BLOWER MOTOR
2.5 BL 1.5 GN 1.5 SW
GROUND
DISTRIBUTION
0670.4 2.5 GN/GR
6
55
LIGHT SWITCH
DETAILS
6300.0
.5 GR/RT .5 GR/RT
1A32y
THERMOSTAT
1) REAR WINDOW
DEFOGGER
4
X899
7X35
REAR WINDOW DE-
FOGGER/ANTENNA
6424.0
.5 BR/WS.5 BL/SW
2
X772
2
B11
LH HEAT EX-
CHANGER
TEMPERATURE
SENSOR
X8997.5 BR/SW
.5 BR/OR
GROUND
DISTRIBUTION
0670.4
58g
X10012X10010
2.5 GN/BR
1210
3 4
3131




.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