length BMW Z3M COUPE 1999 E36 Electrical Troubleshooting Manual

INDEX













POWER DISTRIBUTION CHART 0670.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POWER MIRRORS 5116.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POWER SEATS 5200.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POWER TILT SUNROOF 5410.5-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POWER WINDOW SWITCH, DRIVER’S, S126y 5133.0-01. . . . . . . . . . . . .
POWER WINDOW SWITCH, PASSENGER’S, S127y 5133.0-01. . . . . . . . .
PRESSURE SWITCH, B8y 6450.6-03. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRESSURE SWITCH, B8y 6450.6-07. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRESSURE SWITCH, B9508 6450.6-03. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRESSURE SWITCH, B9508 6450.6-07. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PROGRAM SWITCH, S8503 2460.2-03. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PYROTECHNICAL BELT TENSIONER, DRIVER’S SIDE, G12 3234.0-00.
PYROTECHNICAL BELT TENSIONER, PASSENGER’S SIDE,
G13 3234.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RADIO ANTI–THEFT SWITCH, S20w 6575.2-00. . . . . . . . . . . . . . . . . . . . . .
RADIO, N9 6510.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RADIO/HIFI 6510.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RESISTOR, R8554 0670.4-08. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REVERSING LIGHT SWITCH, S8511 6322.0-00. . . . . . . . . . . . . . . . . . . . . . .
RIGHT HIGH BEAM LIGHT, RIGHT, E12 6312.0-01. . . . . . . . . . . . . . . . . . . .
RIGHT HORN, RIGHT, H3 6133.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RIGHT LICENSE PLATE LIGHT, RIGHT, E44 6320.0-00. . . . . . . . . . . . . . . .
RIGHT LOW BEAM LIGHT, RIGHT, E14 6312.0-01. . . . . . . . . . . . . . . . . . . .
RIGHT PARK LIGHT, RIGHT, E19 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . . . .
SEAT BELT SWITCH, DRIVER’S, S58 3234.0-02. . . . . . . . . . . . . . . . . . . . . .
SEAT BELT SWITCH, PASSENGER’S, S59 3234.0-02. . . . . . . . . . . . . . . . .
SEAT CONTROL SWITCH, DRIVER’S SEAT, S51 5200.0-00. . . . . . . . . . . .
SEAT CONTROL SWITCH, DRIVER’S SEAT, S51 5200.0-02. . . . . . . . . . . .
SEAT CONTROL SWITCH, PASSENGER’S SEAT, S56 5200.0-01. . . . . . .
SEAT CONTROL SWITCH, PASSENGER’S SEAT, S56 5200.0-03. . . . . . . SEAT HEATER SWITCH, DRIVER’S SEAT, S53 5203.0-00. . . . . . . . . . . . .
SEAT HEATER SWITCH, PASSENGER’S SEAT, S54 5203.0-00. . . . . . . . .
SEAT HEATER, DRIVER’S, E57 5203.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . .
SEAT HEATER, PASSENGER’S, E58 5203.0-00. . . . . . . . . . . . . . . . . . . . . . .
SEAT HEIGHT MOTOR, DRIVER’S, M52 5200.0-00. . . . . . . . . . . . . . . . . . .
SEAT HEIGHT MOTOR, DRIVER’S, M52 5200.0-02. . . . . . . . . . . . . . . . . . .
SEAT HEIGHT MOTOR, PASSENGER’S, M59 5200.0-01. . . . . . . . . . . . . . .
SEAT HEIGHT MOTOR, PASSENGER’S, M59 5200.0-03. . . . . . . . . . . . . . .
SEAT LENGTH ADJUST CUT–OFF RELAY, DRIVER’S, K921 5200.0-02.
SEAT LENGTH ADJUST CUT–OFF RELAY, PASSENGER’S,
K911 5200.0-03. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEAT LIMIT SWITCH, DRIVER’S, S910 5200.0-02. . . . . . . . . . . . . . . . . . . . .
SEAT LIMIT SWITCH, PASSENGER’S, S911 5200.0-03. . . . . . . . . . . . . . . .
SEAT MAT, I1008 3234.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEAT MOVEMENT MOTOR, DRIVER’S, M51 5200.0-00. . . . . . . . . . . . . . .
SEAT MOVEMENT MOTOR, DRIVER’S, M51 5200.0-02. . . . . . . . . . . . . . .
SEAT MOVEMENT MOTOR, PASSENGER’S, M60 5200.0-01. . . . . . . . . . .
SEAT MOVEMENT MOTOR, PASSENGER’S, M60 5200.0-03. . . . . . . . . . .
SEAT OCCUPANCY DETECTOR, A113 3234.0-01. . . . . . . . . . . . . . . . . . . . .
SEAT TILT ADJUST CUT–OFF RELAY, DRIVER’S, K920 5200.0-02. . . . .
SEAT TILT ADJUST CUT–OFF RELAY, PASSENGER’S,
K910 5200.0-03. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEATBACK HEATER, DRIVER’S, E56 5203.0-00. . . . . . . . . . . . . . . . . . . . . .
SEATBACK HEATER, PASSENGER’S, E59 5203.0-00. . . . . . . . . . . . . . . . .
SECONDARY AIR PUMP RELAY, K6304 1210.17-05. . . . . . . . . . . . . . . . . . .
SECONDARY AIR PUMP RELAY, Y6304 1210.25-04. . . . . . . . . . . . . . . . . . .
SECONDARY AIR PUMP VALVE, Y6163 1210.17-05. . . . . . . . . . . . . . . . . . .
SECONDARY AIR PUMP VALVE, Y6163 1210.25-03. . . . . . . . . . . . . . . . . . .
SHIFT–LOCK,Y19 2460.2-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIDE IMPACT SENSOR, DRIVER’S, B78 3234.0-03. . . . . . . . . . . . . . . . . . .



2.5 VI/SW
0110.0 INTRODUCTION











P90
FRONT POWER
DISTRIBUTION
BOXF115A
GROUND
DISTRIBUTION
0670.46160.0-02 2.5 VI/SW 4 8P91
REAR POWER
DISTRIBUTION
BOX
F4430A
X29326
X293
FUSE DETAILS
0670.3
4 VI/SW 86
8530
87
X452
CENTRAL
BODY
ELECTRONICS
(ZKE)
6100.0 K11
WIPER RELAY
FUSE DETAILS
0670.3
X493
Schematics
The schematics divide the entire vehicle electrical system into individual circuits. Interacting
electrical components are shown on one common schematic.
Switches and other components are represented in such a way that their general layout and
function are self–explicit. They are arranged on the sheet such that the current path can be
followed from positive (top) to negative (bottom).
Important: The components and wires are not drawn to scale. For instance, a lead with a length
of over 1m can be shown as a lead that is only a few cm long. To ensure clear arrangement , all
connectors, lines branches and connected components from the fuses to the component and
from the component to ground connection are not shown within the individual cells. If required,
reference can be made to cells 0670.3 Fuse Details and 0670.4 Ground Distribution where all
lines are illustrated with all plug connections, line branches and connected components.
All circuit symbols used are listed and explained in cell 0140.0 Symbols.
In cell 7000.0 Component Location Chart all important connectors, ground points and
components are listed in tabular form. It provides a precise description of the component
locations in the vehicle.
In cell 7100.0 Component Location Views the location of connectors and components which
are difficult to locate are shown in line arts or illustrations. In cell 8000.0 Splice Location Views
all splices are listed in numerical order and illustrations are provided to assist in locating splices
on larger harnesses. In cell 8500.0 Connector Views diagrams of connectors with more than 2
pins are illustrated.

Example
General conventions can be explained based on the following schematic example.



GROUND DISTRIBUTION
GROUND X13004










.5 BRX624
4Y6
PASSENGER’S
SIDE MIRROR
X2857A51
WIPER/WASHER
MODULE
X7443M23
PASSENGER’S
WINDOW MOTOR
.5 BR 2.5 BR
1.5 BR.75 RT/WSX357
1E800
FRONT LEFT
INTERIOR LIGHT
X1620
S13
PASSENGER’S
DOOR JAMB
SWITCH
1.5 BR
1
.5 BRX351
X13134
4 BR
X2561
.5 BR
X942
X3362
.5 BR
X10126
.5 BR
X13004
4 BR
X2791
2 BR
X99952K911
PASSENGER’S
SEAT LENGTH AD-
JUST CUT–OFF
RELAY
X9997
K910
PASSENGER’S
SEAT TILT ADJUST
CUT–OFF RELAY
7 X9995
1.5 BR
X99942S911
PASSENGER’S
SEAT LIMIT
SWITCH
.5 BR
S56
PASSENGER’S
SEAT, SEAT
CONTROL SWITCH
2 BR
X11357
1.5 BR
ROADSTER
2.5 BR
M VERSIONS
X93362E34
FRONT DOME
LIGHT/MAP READ-
ING ASSEMBLY
.5 BR
COUPE

1
.75 RT/
WS


GROUND DISTRIBUTION
GROUND X13004










1.5 BR
S56
PASSENGER’S
SEAT, SEAT
CONTROL SWITCH
2 BR
X13004
4 BR
X2791
2 BR
X99952K911
PASSENGER’S
SEAT LENGTH AD-
JUST CUT–OFF
RELAY
X9997
K910
PASSENGER’S
SEAT TILT ADJUST
CUT–OFF RELAY
7X9995
1.5 BR
X99942S911
PASSENGER’S
SEAT LIMIT
SWITCH
.5 BR
S56
PASSENGER’S
SEAT, SEAT
CONTROL SWITCH
2 BR
X11357
1.5 BR
WITH SPORT SEAT WITHOUT SPORT SEAT
2.5 BR
S221
EVAPORATOR
CONTROLLER
X1005431
2.5 BR .5 BR/WS
.5 BRX1517
2M111
FRESH AIR
RECIRCULATION
MOTOR
B14
EVAPORATOR
TEMPERATURE
SENSOR
X7711
X132871M30
BLOWER MOTOR
X183502
X818
1 BR
X189842E106
HEAT/A/C
CONTROL PANEL
ILLUMINATION
S220
AIR CONDITION-
ING/RECIRCULAT-
ING SWITCH
ASSEMBLY
X183496
X189832E105
HEAT/A/C
CONTROL PANEL
ILLUMINATION
X814
2.5 BR.5 BR/WS
.5 BR/
WS.5 BR/
WS .5 BR
Y6
PASSENGER’S
SIDE MIRROR
.5 BR
X6244
X942
M23
PASSENGER’S
WINDOW MOTOR
X7443
.5 BR
.5 BR
X2561
X390
H8
RIGHT FRONT
AUXILIARY TURN
LIGHT
.5 BR
E800
FRONT LEFT
INTERIOR
LIGHT
X336
X3571
X190181
1.5 BR
X1620
S13
PASSENGER’S
DOOR JAMB
SWITCH
X3511
.5 BR .5 BR
2.5 BR 2.5 BR
Z3 VERSIONS
S38y
TILT SUNROOF
SWITCH
X6435
1.5 RT
COUPE
E34
FRONT DOME
LIGHT/MAP
READING
ASSEMBLY
X93362
ROADSTER COUPE
.5 BR2




GROUND DISTRIBUTION
GROUND X13006

B17
RIGHT REAR
BRAKE PAD
SENSOR








E99
HARD TOP
CONNECTOR 11.5 BR
X3801 X1102
X1625
X1624
X13007
2.5 BR 1.5 BR
4 BR .5 BR
X7131
X13006
0670.4-16
X711
2S826
LUGGAGE
COMPARTMENT
LIGHT SWITCH
X4131
H34
HIGH LEVEL STOP
LIGHT
.5 BR1.5 BR
E9
REAR DEFOGGER I
X13017
2
X12661
S164
CONVERTIBLE TOP
END–POSITION MI-
CRO SWITCH
X11209
2
2.5 SW
X9824
2.5 BR
2.5 BR
X11209
2
WITHOUT HARD
TOP PROVISIONS WITH HARD TOP
PROVISIONS
S164
CONVERTIBLE TOP
END–POSITION MI-
CRO SWITCH
X10299
2
.75 BR
2.5 BR
.5 BRX352
1S14
DRIVER’S DOOR
JAMB SWITCH
.5 BR
X2751
X99917K920
DRIVER’S SEAT
TILT ADJUST CUT–
OFF RELAY
X9993
K921
DRIVER’S SEAT
LENGTH ADJUST
CUT–OFF RELAY
2X9991
1.5 BR
X99902S910
DRIVER’S SEAT
LIMIT SWITCH
.5 BR
S51
DRIVER’S SEAT,
SEAT CONTROL
SWITCH
2 BR
2.5 BR 1.5 BR
1.5 BR
2.5 BR
2.5 BR
M VERSIONS
2.5 BR
E9
REAR DEFOGGER I
1 X380
2.5 BR
X7123E32
LUGGAGE
COMPARTMENT
LIGHT
.75 BRCOUPE COUPE
X130571A36
REAR WIPER/
WASHER INTERVAL
CONTROL MODULE
2.5 BRCOUPE
X7101
E44
RIGHT LICENSE
PLATE LIGHT
.75 BR
X7091
E43
LEFT LICENSE
PLATE LIGHT
.75 BR
X114032
X114022
X90232
X91625
.75 BR .75 BR .75
BRROADSTER COUPE
X102851M17
LUGGAGE
COMPARTMENT
LOCK MOTOR
1.5 BRCOUPE
X112771COUPE
.75 BR




GROUND DISTRIBUTION
GROUND X13006









E99
HARD TOP
CONNECTOR 1
X7101
E44
RIGHT LICENSE
PLATE LIGHT
X380
1
X1102
X13007
.75 BR
2.5 BR
4 BR
X13006
X7091
E43
LEFT LICENSE
PLATE LIGHT
.75 BR
X4131
H34
HIGH LEVEL STOP
LIGHT
.5 BR
E9
REAR DEFOGGER I
X13017
2
X12661
S164
CONVERTIBLE TOP
END–POSITION MI-
CRO SWITCH
X11209
2
2.5 SW
X9824
2.5 BR
2.5 BR
X11209
2
WITHOUT HARD
TOP PROVISIONS WITH HARD TOP
PROVISIONS
S164
CONVERTIBLE TOP
END–POSITION MI-
CRO SWITCH
X10299
2
.75 BR
2.5 BR
.5 BRX352
1S14
DRIVER’S DOOR
JAMB SWITCH
S51
DRIVER’S SEAT,
SEAT CONTROL
SWITCH
X2751
2 BR
X99917K920
DRIVER’S SEAT
TILT ADJUST CUT–
OFF RELAY
X9993
K921
DRIVER’S SEAT
LENGTH ADJUST
CUT–OFF RELAY
2X9991
1.5 BR
X99902S910
DRIVER’S SEAT
LIMIT SWITCH
.5 BR
S51
DRIVER’S SEAT,
SEAT CONTROL
SWITCH
2 BR
WITH SPORT SEAT WITHOUT SPORT
SEAT
2.5 BR 1.5 BR
2 BR
1.5 BR
2.5 BR
0670.4-16
Z3 VERSIONS
X112771COUPE
X7131
.5 BR
X7112S826
LUGGAGE
COMPARTMENT
LIGHT SWITCH B17
RIGHT REAR
BRAKE PAD
SENSOR
.5 BR
E32
REAR CENTER
INTERIOR LIGHT
3X712
.5 BRCOUPE
X130571A36
REAR WIPER/
WASHER INTERVAL
CONTROL
MODULE
2.5 BRCOUPE
X3801E9
REAR DEFOGGER I
2.5 BR COUPE
1.5 BR
1.5 BR



DRIVER’S SEAT











POWER SEATS
P90
FRONT POWER
DISTRIBUTION BOX
X10016
18
FUSE DETAILS
0670.3
S51
DRIVER’S SEAT,
SEAT CONTROL
SWITCH
3) SEAT HEIGHT
SWITCH
0) OFF
1) UP
2) DOWN
7) SEAT
POSITION
SWITCH
0) OFF
1) FRONT
2) BACK
73
M51
DRIVER’S SEAT
MOVEMENT
MOTOR 1 1 GN
2 X726
1 BL/WS
M52
DRIVER’S SEAT
HEIGHT MOTOR 2 .5 OR
1 X728
1 SW
GROUND
DISTRIBUTION
0670.4
2 X275
2 RT/GE
X9993
2 BR



F1930A
12
S910
DRIVER’S SEAT
LIMIT SWITCH
1) OFF
2) LIMIT 1 X9990
X99902



GROUND
DISTRIBUTION
0670.4
9 X9991K920
DRIVER’S SEAT
TILT ADJUST CUT–
OFF RELAY
X9991687



GROUND
DISTRIBUTION
0670.4
5
.5 VI/SW
K921
DRIVER’S SEAT
LENGTH ADJUST
CUT–OFF RELAY 4
312



GROUND
DISTRIBUTION
0670.4
1 GN 1 BL10
.5 OR1 VI/WS
1 VI
1 VI 1 SW 1 BL .5 ORX9991
X9991
01020201
SPORT SEATS



PASSENGER’S SEAT











POWER SEATS
P90
FRONT POWER
DISTRIBUTION BOX
X10015
10
FUSE DETAILS
0670.3
S56
PASSENGER’S
SEAT, SEAT
CONTROL SWITCH
3) SEAT HEIGHT
SWITCH
0) OFF
1) UP
2) DOWN
7) SEAT
POSITION
SWITCH
0) OFF
1) FRONT
2) BACK
73
M60
PASSENGER’S
SEAT MOVEMENT
MOTOR 1 1 GN
2 X734
1 BL/WS
M59
PASSENGER’S
SEAT HEIGHT
MOTOR 2 .5 OR
1 X737
1 SW
GROUND
DISTRIBUTION
0670.4
2 X279
2 RT/SW
X9997
2 BR



F530A
12
S911
PASSENGER’S
SEAT LIMIT
SWITCH
1) OFF
2) LIMIT 1 X9994
X99942



GROUND
DISTRIBUTION
0670.4
9 X9995K910
PASSENGER’S
SEAT TILT ADJUST
CUT–OFF RELAY
X9995687



GROUND
DISTRIBUTION
0670.4
5
.5 VI/SW
K911
PASSENGER’S
SEAT LENGTH AD-
JUST CUT–OFF
RELAY 4
312



GROUND
DISTRIBUTION
0670.4
1 GN 1 BL10
.5 OR1 BR/WS
1 BR/SW
1 BR/SW 1 SW 1 BL .5 ORX9995
X9995
SPORT SEATS
01022100



COMPONENT LOCATION CHART









COMP.8500.0 7100.0LOCATION DESCRIPTION
K46 . . HIGH BEAM LIGHT RELAY . . . . . . . . . . . . . footwell, driver’s side (USA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-1

K46z .
DAY LIGHT RELAY MODULE . . . . . . . . . . . .
footwell, driver’s side (CANADA)



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



K70 . .


CENTRAL LOCKING LUGGAGE
COMPARTMENT LID MOTOR RELAY
(ZV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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


08-2



K94 . . ENGINE CONTROL RELAY (ABS/ASC) . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-3
K95 . . VALVE RELAY (ABS/ASC) . . . . . . . . . . . . . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . . . . . . . . . 09-3

K910 .
PASSENGER’S SEAT TILT ADJUST CUT–
OFF RELAY . . . . . . . . . . . . . . . . . . . . . . . . .
underside of RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11-1




K911 . .

PASSENGER’S SEAT LENGTH ADJUST
CUT–OFF RELAY . . . . . . . . . . . . . . . . . . . .
underside of RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11-1




K920 .

DRIVER’S SEAT TILT ADJUST CUT–OFF
RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
underside of LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10-2




K921 .

DRIVER’S SEAT LENGTH ADJUST CUT–
OFF RELAY . . . . . . . . . . . . . . . . . . . . . . . . .
underside of LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10-2


K6300 ENGINE CONTROL MODULE RELAY . . . . rear RH side of engine compartment in E–Box (M VERSIONS) . . . . . . . . . . . . . . . . . 00-1
K6300 ENGINE CONTROL MODULE RELAY . . . . rear RH side of engine compartment in E–Box (Z3 VERSIONS) . . . . . . . . . . . . . . . . 41-1

K6304

SECONDARY AIR PUMP RELAY . . . . . . . .

rear RH side of engine compartment in E–Box (M VERSIONS) . . . . . . . . . . . . . . . . .

00-1


K6304 SECONDARY AIR PUMP RELAY . . . . . . . . rear RH side of engine compartment in E–Box (Z3 VERSIONS) . . . . . . . . . . . . . . . . 41-1
K6326 UNLOADER RELAY, TERMINAL 15 . . . . . . rear RH side of engine compartment in E–Box (M VERSIONS) . . . . . . . . . . . . . . . . . 00-1
K6326 UNLOADER RELAY, TERMINAL 15 . . . . . . rear RH side of engine compartment in E–Box (Z3 VERSIONS) . . . . . . . . . . . . . . . . 41-1

K6301w
FUEL PUMP RELAY . . . . . . . . . . . . . . . . . . . .
below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19-1



M51
DRIVER’S SEAT
MOVEMENT
MOTOR
X275
X726X728X733
COMPONENT LOCATION VIEWS










H55z
REAR LEFT MID–
HIGH RANGE
SPEAKER
K920
DRIVER’S SEAT
TILT ADJUST CUT–
OFF RELAY
X778
X9991X10214
M52
DRIVER’S SEAT
HEIGHT MOTOR


X537
K921
DRIVER’S SEAT
LENGTH ADJUST
CUT–OFF RELAY