BMW Z3M COUPE 2000 E36 Electrical Troubleshooting Manual





INTRODUCTION










General Conventions
1. Switches and relays are always shown in rest position (e.g. K11).
2. A component shown in a dashed frame signifies that the component is
illustrated only in part (e.g. P90 and P91).
3. A component shown in a completely drawn frame signifies that the
component is illustrated in full (e.g. K11).
4. The dashed line between pin 8 and pin 6 of connector X293 indicates
that both pins belong to connector X293.
5. The dashed line from fuse F1 to pin 8 of connector X293 shows the
positive supply of relay K11. If required, refer to cell 0670.3 Fuse Details at
fuse F1 for the complete line progressing with plug connections, line
branches, wire colors and cross sections.6. The dashed line with an arrow at splice X452 indicates that several wires
lead to splice X452. All lines leading to the connection are illustrated in
cell 6100.0 Central Body Electronics (ZKE). An interrupted line with an
arrow indicates that only this one wire leads to another circuit.
7. The dashed line from pin 4 of connector X293 to ground X493 shows the
ground supply for relay K11. If required, refer to cell 0670.4 Ground
Distribution at ground X493 for the complete line progression with all plug
connections, line branches, wire colors, and cross sections.
8. The interrupted line from splice X452 with an A in the open arrow is
continued on page 6160.0–02.
Termination of wire 4 VI/SW from splice X452 with a wavy line indicates that
the wire is continued on the opposite page.

















CIRCUIT BREAKERVARIABLE RESISTANCE
SENSOR VARIABLE CONTACT
IS MOVED BY AN EXTERNAL
FORCE
VARIABLE RESISTOR RE-
SISTANCE IS CHANGED BY
TEMPERATURE OR
PRESSURE
DIODE CURRENT CAN
FLOW ONLY IN DIRECTION
OF ARROW
ZENER DIODE TO
REGULATE VOLTAGE
LIGHT EMITTING
DIODE PERMANENT MAGNET
MOTOR ONE SPEED
PERMANENT MAGNET
MOTOR TWO SPEEDS
SOLENOID
SOLENOID CONTROLLED
VALVE OR CLUTCH
SOLENOIDTRANSISTORIZED
SWITCH HEATING ELEMENT
OXYGEN SENSORCONTROL/POWER
ELECTRONICS
RADIO LOUDSPEAKER OR
HORN
LIGHT BATTERY
FUSIBLE LINK
FUSE DETAILS
INDUCTIVE
SENSOR
KNOCK SENSOR
31


VEHICLE SPEED
SENSOR

THERMO SWITCH
HALL EFFECT
SENSOR
ANTENNA
0140.0 SYMBOLS
















A WAVY LINE
MEANS WIRE IS
CONTINUED
ENTIRE COMPONENT
SHOWN
COMPONENT WITH
SCREW TERMINALS
CONNECTOR ATTACHED
TO COMPONENT
PART OF COMPONENT
SHOWN
.75 BR.5 BR
X270
4
.5 BR
.5 BR
3
.5 BR.5 BR
X270
4
.5 BR
.75 GN/WS CONNECTOR ATTACHED
TO COMPONENT LEAD
(PIGTAIL)
COMPONENT CASE
ATTACHED DIRECTLY
TO METAL PART OF
CAR (GROUNDED)WIRE INSULATION
IS ONE COLOR
PIN NUMBER
WIRE INSULATION
IS ONE COLOR
WITH ANOTHER
COLOR STRIPE
(GREEN WITH
WHITE)
WIRE ATTACHED
TO METAL PART
OF CAR
(GROUNDED)
GROUND NUMBERED FOR
REFERENCE ON COM-
PONENT LOCATION CHART
WIRE SIZE IN MM
SQUARED
BL BLUEWIRE COLOR
BR BROWN
GE YELLOW
GN GREEN
GR GRAY
OR ORANGE
RS PINK
RT RED
SW BLACK
VI VIOLET
WS WHITE
ONE POLE, TWO
POSITION SWITCH
SWITCHES THAT
MOVE TOGETHER
DASHED LINE SHOWS A
MECHANICAL CONNECTION
BETWEEN SWITCHES
TR TRANSPARENT
CONNECTOR REFERENCE
NUMBER FOR COMPONENT
LOCATION CHART
TWO CONNECTIONS
(PINS) IN THE SAME
CONNECTOR
DASHED LINE INDICATES
TERMINALS OF THE
SAME CONNECTOR
12
X165
1212
SYMBOLS
















4 RT
15
4 GN13
.5 GN/WS5
2.5 SW/GE 2.5 VI42
DETAILS ABOUT
COMPONENT OR
OPERATION
”R” IS ENERGIZED IN
ACCY, RUN, OR START 76 82 X33CONTACT RELAYRELAY WITH RESISTOR
ACROSS WINDINGTERMINAL NUMBER THREE POLE,
FOUR POSITION
SWITCHCOMPONENT NUMBER
S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
TERMINAL NUMBER DESCRIPTION
50 VOLTAGE: IGNITION
SWITCH IN START
VOLTAGE: SUPPLIED AT
ALL TIMES
VOLTAGE: IGNITION
SWITCH IN RUN OR
START 30
15
15I
50 R30
INDICATES THAT
FUSE 9 IS SUPPLIED
WITH POWER AT ALL
TIMES
CONTACT RELAY WITH
TWO OUTPUTSCHANGEOVER
RELAY WITH TWO
OUTPUTS
TERMINAL NUMBER DESCRIPTION
30 RELAY INPUT
RELAY OUTPUT
(WINDING)
RELAY INPUT
(WINDING)
RELAY OUTPUT
(ENERGIZED)
RELAY OUTPUT
(AT REST) 85
86
87
87a
30 86
87 87 8530 86
87 85 87a
TERMINAL NUMBER DESCRIPTION
VOLTAGE: IGNITION
SWITCH IN RUN
VOLTAGE: IGNITION
SWITCH IN ACCESSORY,
RUN OR START 15I
R
GROUND 31
POWER STATUS DESCRIPTION
VOLTAGE: SUPPLIED
AT ALL TIMES
VOLTAGE: IGNITION
SWITCH IN RUN OR
START
VOLTAGE: IGNITION
SWITCH IN ACCESSORY,
RUN OR START
30 86
87 8530
86
87 85NAME OF COMPONENT
F915A
2
10
32
10
32
10
3
SYMBOLS



SYMBOLS












1.5 BR DATA LINK
0670.5 .5 WS/GE
0670.0-030670.0-02
1.5 BRN9
RADIO
THE COMPLETE WIRE PRO-
GRESSION AND FURTHER CIR-
CUITS CONNECTED TO GROUND
X497 ARE SHOWN IN CELL
”0670.4 GROUND DISTRIBUTION”
AT GROUND X497
THE COMPLETE WIRE PROGRES-
SION AND FURTHER CIRCUITS
CONNECTED TO FUSE 18 ARE
SHOWN IN CELL ”0670.3 FUSE
DETAILS” AT FUSE 18
CURRENT PATH IS CON-
TINUED AS LABELED P90
FRONT POWER
DISTRIBUTION BOX F18
15A
GROUND
DISTRIBUTION
0670.4
N1
ANTI–THEFT
CONTROL MODULE
(DWA) FUSE DETAILS
0670.3A1
GENERAL MODULE
X252
17X332
2
CIRCUIT REF-
ERENCE–A WIRE
WHICH CONNECTS TO
ANOTHER CIRCUIT
A2
INSTRUMENT
CLUSTER
X16
11RXD
ARROW SHOWS DIREC-
TION OF CURRENT FLOW
AND IS REPEATED
WHERE CURRENT PATH
CONTINUES
X497
X1812615
X491



K48
LOW BEAM LIGHT
RELAYX45
11 12 13456 78 9
38
37
35
34
33
32
31 42
41
40
39 43 44
FRONT POWER DISTRIBUTION BOX
0670.0 POWER DISTRIBUTION CHART














K2
HORN RELAYK47 *FRONT FOG LIGHT
RELAYK16
HAZARD FLASHER
RELAYK4
BLOWER RELAY
K94
ENGINE CONTROL
RELAY (ABS/ASC)K95
VALVE RELAY
(ABS/ASC)K22
HIGH SPEED
RELAYK19
COMPRESSOR
CONTROL RELAYK21
NORMAL SPEED
RELAY X56X44X64X58
X63X18766X18767
X53X51X52
46
45
3612 3 10
14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
FUSES FUSES
X0
K9
UNLOADER RELAY,
TERMINAL 15K70
CENTRAL LOCKING
LUGGAGE
COMPARTMENT LID
MOTOR RELAY (ZV)X1376
M COUPE




Z3 VERSIONS
M VERSIONS
X50
K33a **AIR CONDITIONING
RELAY, MOTRONICK26
LEFT PARK LIGHT
RELAYX510
CANADA
LATE PRODUCTION K25
RIGHT PARK LIGHT/
LICENSE PLATE
LIGHT RELAYX509CANADA
LATE PRODUCTION
  



IN E–BOX
POWER DISTRIBUTION CHART













K6326
UNLOADER RELAY,
TERMINAL 15
K6300
ENGINE CONTROL
MODULE RELAY K6304
SECONDARY AIR PUMP
RELAYX6326
X6300X6304
M VERSIONS
K6300
ENGINE CONTROL
MODULE RELAYX6300K6326
UNLOADER RELAY,
TERMINAL 15X6326K6304
SECONDARY AIR
PUMP RELAYX6304
Z3 VERSIONS

K6301w
FUEL PUMP RELAY
K46
HIGH BEAM LIGHT
RELAY


POWER DISTRIBUTION CHART
RELAY PANEL UNDER DASHBOARD














N17
CRASH CONTROL
MODULEX65
X6301
X10262
K10485
BRAKE FLUID
LEVEL RELAYX10485
N17
CRASH CONTROL
MODULEX65
RH SIDE LH SIDE
***
*
Z3 VERSIONS
EARLY
PRODUCTION
M VERSIONS AND
Z3 VERSIONS
LATE PRODUCTION




POWER DISTRIBUTION CHART
B+ JUNCTION POINT UNDER LH SIDE OF DASHBOARD


























NOT USEDNOT USED F110 F109 F108 F107 F106 F105 F104 F103 F102 F101
Z3 VERSIONS
80A50A50A80A80A80A80A80A

*15A


0670.1 FUSE CHART




FUSES 1 TO 29










FUSE NUMBER
12345 10 206 7 8 9 11 12 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29
1210.25
1290.0
2460.2
3234.0
30A 10A 30A 15A 30A 20A 5A 30A 7.5A 5A 15A 5A 5A 5A 10A 5A 7.5A20A15A 30A 5A 5A
ENGINE CONTROL SYSTEM MS42.1 (6–CYLINDER M52)
E–BOX FAN
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG) ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)
7.5A 30A 10A 10A30A
5116.0POWER MIRRORS
5133.0
5200.0ZKE POWER WINDOWS (FH)
POWER SEATS
5203.0
6133.0
6160.1HEATED SEATS
HORN
WIPER/WASHER MODULE (WWM) 5126.0ZKE CENTRAL LOCKING (ZV) 3450.1SLIP CONTROL (ABS/ASC) 1230.0CHARGING SYSTEM
6135.1DRIVE–AWAY PROTECTION (EWS III)

























1210.17ENGINE CONTROL SYSTEM MS41.1 (6–CYLINDER S52)









6100.0CENTRAL BODY ELECTRONICS (ZKE IV)



5430.2ELECTRO–HYDRAULIC CONVERTIBLE TOP

1240.0START

3614.0TIRE INFLATION SYSTEM
5410.5POWER TILT SUNROOF
M VERSIONS *
7.5A











*5A
3452.1DYNAMIC STABILITY CONTROL (DSC III)