1999 BMW Z3M COUPE Electrical Troubleshooting Manual



GROUND DISTRIBUTION
GROUNDS X13016 AND X13032










2.5 BRX605
4
X8243A18
HIFI AMPLIFIERX65001M2
FUEL PUMP
2.5 BR 2.5 BR
X13016
X1812615N9
RADIO
1.5 BR
2.5 BR
X181801N22
CD CHANGER
.5 BR
X13032

.5 BR
.5 BR


GROUND DISTRIBUTION
GROUND X18170











.5 BR
X400
.5 BR
.5 BR1E58
PASSENGER’S
SEAT HEATER
S6
ASC SWITCH S4
HORN SWITCH
8
X321
X521
4
.75 BR
S76
REAR WINDOW DE-
FOGGER SWITCH
X7403E59
PASSENGER’S
SEATBACK HEATER .5 BRX898
A837
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS III)
X18051
.5 BR.75 BR 2 TELEPHONE
CONNECTOR
X7333E56
DRIVER’S
SEATBACK
HEATER1E57
DRIVER’S SEAT
HEATER
4
.5 BR
.5 BR
1.5 BR.5 BRX532
2
H10
CHIME MODULE
3X5221
X1213
1
X13047
.5 BR
A110
DIGITAL CLOCK
X5163S18
HAZARD SWITCH X10263
E29
FRONT CIGAR
LIGHTER LIGHT
E25
FRONT ASHTRAY
LIGHT
1 BR .5 BRX10013
.5 BR
X130451S143
CONVERTIBLE TOP
ACTUATING
SWITCH
.5 BR
Z3 VERSIONS
X195274
.5 BR
D110
OBD II
CONNECTOR
S7
COMBINATION
SWITCH
.5 BR
1.5 BR
X16171.5 BRX1618

.5 BR










4 BR
X11355
1.5 BR.5 BR
S53
DRIVER’S SEAT,
SEAT HEATER
SWITCH
1
X6514
X10064
.5 BR
X6584S54
PASSENGER’S
SEAT, SEAT
HEATER SWITCH
E82
TRANSMISSION
POSITION INDICA-
TOR LIGHT
X1193
.5 BR
S20w
RADIO ANTI–
THEFT SWITCH
X5391
4 BR
X1325215A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)S8503
PROGRAM SWITCHX85032
.5 BR
X18170
1.5 BR
1.5 BR 1.5 BR.5 BR
4
S559
PASSENGER’S AIR
BAG CUT–OFF
SWITCH
X19565
1
E28
FRONT CIGAR
LIGHTER
X1014
2.5 BR

.5 BR
.5 BR


GROUND DISTRIBUTION
GROUND X18170










.5 BR
X400
X1608
.5 BR
1.5 BR 1.5 BR
.5 BR1E58
PASSENGER’S
SEAT HEATER
S6
ASC SWITCH S4
HORN SWITCH
8
X321
X2227
2
X1617
.75 BR
S76
REAR WINDOW DE-
FOGGER SWITCH
X7403E59
PASSENGER’S
SEATBACK HEATER
.5 BR
X898
A837
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS III)
X18051
.5 BR.75 BR 2 TELEPHONE
CONNECTOR
X7333E56
DRIVER’S SEAT-
BACK HEATER1E57
DRIVER’S SEAT
HEATER
4
.5 BR
X1226
1 BR.5 BR
X10013
M VERSIONS
.5 BR
.5 BR
1.5 BR.5 BRX532
2
H10
CHIME MODULE
2
X5221
X1213
1
X13047
.5 BR
S8
LIGHT SWITCH
X5163S18
HAZARD SWITCH X18333
E29
FRONT CIGAR
LIGHTER LIGHT
E25
FRONT ASHTRAY
LIGHT
.5 BR
X130451S143
CONVERTIBLE TOP
ACTUATING
SWITCH
.5 BR
2X1098
.5 BR
S7
COMBINATION
SWITCH
.5 BR
X14391
E96
GEAR SHIFT LE-
VER INDICATOR
.5 BRX8981S76
REAR WINDOW DE-
FOGGER SWITCH
.5 BR
COUPEROADSTER

.5 BR










.5 BR
4 BR
X13055
1.5 BR
.5 BR
S53
DRIVER’S SEAT,
SEAT HEATER
SWITCH
X6514
X10064
X6584S54
PASSENGER’S
SEAT, SEAT
HEATER SWITCH
.5 BR
S20w
RADIO ANTI–
THEFT SWITCH
X5391
.5 BR
X3901
X195275
H8
RIGHT FRONT
AUXILIARY TURN
LIGHT
4 BR
X1325215A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
X18170
1.5 BR 1.5 BR
.5 BR
4
D110
OBD II
CONNECTOR
1.5 BR 1.5 BR
.5 BR
4
S559
PASSENGER’S AIR
BAG CUT–OFF
SWITCH
X19565
X1618
B1
RIGHT FRONT
SPEED SENSOR –
ABS
X1133
.5 SW
B2
LEFT FRONT
SPEED SENSOR –
ABS
X1143
.5 SWX13304
.5 BR
X6435S38y
TILT SUNROOF
SWITCH
X190181
1.5 BR1.5 RT
COUPE

INSTRUMENT
CLUSTER
6211.0


BLOCK DIAGRAM
0670.5 DATA LINK






 



TXDRXD
D100
DATA LINK
CONNECTOR

BOARD
COMPUTER
(BC – LOW)
6581.3
CENTRAL BODY
ELECTRONICS
(ZKE IV)
6100.0
ELECTRONIC
TRANSMISSION
CONTROL
(EGS A4S 270R)
2460.2
ENGINE CONTROL
SYSTEM MS41.1
(6–CYLINDER S52)
1210.17
SLIP CONTROL
(ABS/ASC)
3450.1
DRIVE–AW AY
PROTECTION
(EWS III)
6135.1
ELECTRONIC
TRANSMISSION
CONTROL
(EGS A4S 270R)
2460.2
SUPPLEMENTAL
RESTRAINT
SYSTEM (AIR BAG)
3234.0
ENGINE CONTROL
SYSTEM MS42.1
(6–CYLINDER M52)
1210.25



DATA LINK
RXD AND TXD







 



A837
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS III)
X183
.5 WS/VI
A2w
INSTRUMENT
CLUSTER X16
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV) X10182
X1805
TXD
TXD.5 WS/VI .5 WS/VI
12
4
11
TXD
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE X74TXD .5 WS/VI
9
A35y
BOARD
COMPUTER
(BC – LOW) X102452
TXD X6002
20
.5 WS/VI
15 X6002
.35 WS/GE
D100
DATA LINK
CONNECTOR
17D100
DATA LINK
CONNECTOR
.5 WS/VI.5 WS/VI
A52
SLIP CONTROL
MODULE
(ABS/ASC) X1170TXD 7
.35 WS/VI .5 WS/VI
A6000
ENGINE CONTROL
MODULE (DME) X60004TXD2 32
X600026TXD2
A19007
THERMAL OIL
LEVEL SENSOR
(TOENS) CONTROL
MODULE X19007TXD .35 WS/VI
10
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
X101829RXD
A35y
BOARD
COMPUTER
(BC – LOW)
X102453RXD
.35 WS/GE
X182
.5 WS/GE
Z3 VERSIONS
Z3 VERSIONS
A8500
TRANSMISSION
CONTROL MODULE
(EGS) X8500TXD2 88



DATA LINK
DATA LINK CONNECTOR, PINS 1, 7, 14, AND 16







 



X1047
20 X16
.5 SW
A6000
ENGINE CONTROL
MODULE (DME) X60004
.5 SW
.5 SW3
.35 SW
TD 17
5 X1805
.35 SWA837
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS III)
12 X10017
7
16 X6002
D100
DATA LINK
CONNECTOR
FUSE DETAILS
0670.3
A2w
INSTRUMENT
CLUSTER
3) ENGINE SPEED
INPUT
15 X17
.35 WS/GN
14 2.5 RT
G1
BATTERY
POWER
DISTRIBUTION
0670.2
X64109
P90
FRONT POWER
DISTRIBUTION BOXF2610A
POWER
DISTRIBUTION
0670.2
1
12 X19007
A19007
THERMAL OIL
LEVEL SENSOR
(TOENS) CONTROL
MODULE
Z3 VERSIONS