ABS BMW Z3M COUPE 1999 E36 Electrical Troubleshooting Manual













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
1230.0
GROUND
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/VIX189
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)

1
13X1170
4 X13146
.5 BL/RT







 





6325.0 BRAKE LIGHTS
.5 BL/RT
10 X8500A8500
TRANSMISSION
CONTROL MODULE
(EGS)
21
X181
X10018
F4615A
FUSE DETAILS
0670.3
2P90
FRONT POWER
DISTRIBUTION BOX
32
1
1.5 BL/RT
1.5 BL/RTS30
BRAKE LIGHT SWITCH
1) BRAKE PEDAL RE-
LEASED
2) BRAKE PEDAL
DEPRESSED
3) BRAKE PEDAL
DEPRESSED (TEST)
4) BRAKE PEDAL RE-
LEASED (NORMAL)
X13006
GROUND
DISTRIBUTION
0670.4 X318
X318
E17
RIGHT REAR LIGHT
ASSEMBLY X319
X319
E16
LEFT REAR LIGHT
ASSEMBLY H24
LEFT BRAKE LIGHTH31
RIGHT BRAKE
LIGHT
5 1 7H34
HIGH LEVEL STOP
LIGHT X4133
X4131 .75 BL/RT
2 3
.75 BL/RT
34
34 X78
X78
A52
SLIP CONTROL
MODULE
(ABS/ASC) .75 BL/RT
2 X6031
.35 BL/RT
K18363
CONVERTIBLE TOP
RELAY I (CLOSE) .5 BL/RTK18364
CONVERTIBLE TOP
RELAY II (OPEN)
X1215
.5 BL/RT .5 BL/RT
8 X18363
8 X18364
Z3 VERSIONS
X10016
F137.5A
FUSE DETAILS
0670.3 6
28 X60004A6000
ENGINE CONTROL
MODULE (DME) .35 RT/GE
X112772
X11277
COUPE
COUPE
24
.5 BL/RT

X112772
X112771
COUPE
COUPE
48X1175
4 X13146
.5 BL/RT


S32
CLUTCH SWITCH
1) NORMAL STATE
2) CLUTCH PEDAL
DEPRESSED





 




BRAKE LIGHTS
X1211
.75 BL/RT
21
X181
X10018
F4615A
FUSE DETAILS
0670.3
2P90
FRONT POWER
DISTRIBUTION BOX
32
1
1.5 BL/RT
1.5 BL/RTS30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
X13006
GROUND
DISTRIBUTION
0670.4 X318
X318
E17
RIGHT REAR LIGHT
ASSEMBLY X319
X319
E16
LEFT REAR LIGHT
ASSEMBLY H24
LEFT BRAKE LIGHTH31
RIGHT BRAKE
LIGHT
5 1 7
.75 BL/RT
2 3
.75 BL/RT
18 X22A8
CRUISE CONTROL
MODULE
(TEMPOMAT) .5 BL/BR
X1212
CRUISE CONTROL
(TEMPOMAT)
6571.0
X197
21
.75 BL/BR
.75 BL/BR
X78
X78
A52
SLIP CONTROL
MODULE
(ABS/ASC) .75 BL/RT
K18363
CONVERTIBLE TOP
RELAY I (CLOSE) .5 BL/RTK18364
CONVERTIBLE TOP
RELAY II (OPEN)
X1215
.5 BL/RT .5 BL/RT
8 X18363
8 X18364
M VERSIONS
H34
HIGH LEVEL STOP
LIGHT X4133
X4131



7000.0 COMPONENT LOCATION CHART










COMP. DESCRIPTION LOCATION7100.0 8500.0
A2w . . INSTRUMENT CLUSTER . . . . . . . . . . . . . . . LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-2

A8 . . . .
CRUISE CONTROL MODULE
(TEMPOMAT) . . . . . . . . . . . . . . . . . . . . . . .
behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

00-2



A12 . .
SUPPLEMENTAL RESTRAINT SYSTEM
CONTROL MODULE . . . . . . . . . . . . . . . . .
below center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22-2


A18 . . HIFI AMPLIFIER . . . . . . . . . . . . . . . . . . . . . . . in RH side of luggage compartment (ROADSTER) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-3

A18 . .

HIFI AMPLIFIER . . . . . . . . . . . . . . . . . . . . . . .

in RH side of luggage compartment (COUPE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

46-1


A35y . BOARD COMPUTER (BC – LOW) . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-3


A36 . .

REAR WIPER/WASHER INTERVAL
CONTROL MODULE . . . . . . . . . . . . . . . . .
in lift gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37-2


A51 . . WIPER/WASHER MODULE . . . . . . . . . . . . . behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-2
A52 . . SLIP CONTROL MODULE (ABS/ASC) . . . . front LH side of engine compartment (Z3 VERSIONS) . . . . . . . . . . . . . . . . . . . . . . . . . 39-3

A52 . .
SLIP CONTROL MODULE (ABS/ASC) . . . .
behind glove box (M VERSIONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
00-2

A104 . BODY ELECTRONICS CONTROL
MODULE (ZKE IV) . . . . . . . . . . . . . . . . . . . behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-2

A110 . .

DIGITAL CLOCK . . . . . . . . . . . . . . . . . . . . . . .

center console




A113 . . SEAT OCCUPANCY DETECTOR . . . . . . . . under RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-1
A113 . . SEAT OCCUPANCY DETECTOR . . . . . . . . under RH front seat (WITH SPORT SEAT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
A605 . FUSE HOLDER . . . . . . . . . . . . . . . . . . . . . . . . center console (radio and console removed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-1

A837 .
ELECTRONIC IMMOBILIZER CONTROL
MODULE (EWS III) . . . . . . . . . . . . . . . . . . .
LH side of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38-3



A6000
ENGINE CONTROL MODULE (DME) . . . . .
rear RH side of engine compartment in E–Box (M VERSIONS) . . . . . . . . . . . . . . . . .
00-1

A6000 ENGINE CONTROL MODULE (DME) . . . . . rear RH side of engine compartment in E–Box (Z3 VERSIONS) . . . . . . . . . . . . . . . . 40-2



COMPONENT LOCATION CHART









COMP.8500.0 7100.0LOCATION DESCRIPTION


A8500

TRANSMISSION CONTROL MODULE
(EGS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42-3


A9008 CRUISE CONTROL INTERFACE . . . . . . . . near steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-3

A19007
THERMAL OIL LEVEL SENSOR (TOENS)
CONTROL MODULE . . . . . . . . . . . . . . . . .
behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38-1


B1 . . . . RIGHT FRONT SPEED SENSOR – ABS . . on RH front wheel, above brake caliper

B2 . . . .

LEFT FRONT SPEED SENSOR – ABS . . .

on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-3


B3 . . . . RIGHT REAR SPEED SENSOR – ABS . . . on RH rear wheel, above brake caliper
B4 . . . . LEFT REAR SPEED SENSOR – ABS . . . . on LH rear wheel, above brake caliper
B6y . . . FUEL SENSOR . . . . . . . . . . . . . . . . . . . . . . . . in fuel tank

B8y . . .
PRESSURE SWITCH . . . . . . . . . . . . . . . . . . .
front RH side of engine compartment



B9 . . . . INTERMEDIATE PRESSURE SWITCH . . . front RH side of engine compartment
B10 . . VEHICLE SPEED SENSOR . . . . . . . . . . . . . on differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-2
B14 . . EVAPORATOR TEMPERATURE SENSOR RH side of LH footwell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-2
B16 . . LEFT FRONT BRAKE PAD SENSOR . . . . . on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3

B17 . .

RIGHT REAR BRAKE PAD SENSOR . . . . .

behind RH rear wheel




B18 . . BRAKE FLUID LEVEL SWITCH . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09-1


B21 . .

ON–BOARD COMPUTER TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . .
in RH front bumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11-3


B59 . . OIL TEMPERATURE GAUGE . . . . . . . . . . . center console
B65 . . FUEL TANK PRESSURE SENSOR . . . . . . . under rear storage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07-2
B78 . . DRIVER’S SIDE IMPACT SENSOR . . . . . . under LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-3

B79 . .

PASSENGER’S SIDE IMPACT SENSOR . .

under RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35-1



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



COMPONENT LOCATION CHART









COMP.8500.0 7100.0LOCATION DESCRIPTION
X19528 (3 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . under rear storage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07-2 02-5

X19565
(6 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . .
center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


11-3
X 2 1111 (3 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-2
X 2 111 2 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . center console
X 2 111 3 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . center console
X 2 111 4 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . center console

X23146
(2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . .
in LH side of luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25-3

X60001 (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-2 01-4
X60002 (24 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-2 04-2
X60003 (52 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-2 03-2
X60004 (40 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-2 09-1
X60005

(9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . .

rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40-2

01-4
X62101 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43-3 06-1
X62102 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-2 06-1
X62201 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43-3 06-1
X62202
(4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . .
on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42-2
06-1
X64101 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41-2
X64102 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41-2
X64192 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box
X89977 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-3

X91009

(2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . .

under RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11-2


Y1w . . ABS HYDRAULIC UNIT . . . . . . . . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08-1



A35y
BOARD
COMPUTER
(BC – LOW)
X10245
X18349
7100.0 COMPONENT LOCATION VIEWS
ELECTRICAL CONTROL MODULE LOCATIONS












A6000
ENGINE CONTROL
MODULE (DME)
A8
CRUISE CONTROL
MODULE
(TEMPOMAT)
X782
S220
AIR CONDITIONING/
RECIRCULATING
SWITCH ASSEMBLY K6300
ENGINE CONTROL
MODULE RELAYK6326
UNLOADER RELAY,
TERMINAL 15
X1175



K6304
SECONDARY AIR
PUMP RELAY

X6000

A52
SLIP CONTROL
MODULE
(ABS/ASC)
X22



M93
AUXILIARY
THROTTLE
POSITION MOTOR
(ADS)
COMPONENT LOCATION VIEWS










K70
CENTRAL LOCKING
LUGGAGE
COMPARTMENT
LID MOTOR RELAY
(ZV)X20
X2213
Y1w
ABS HYDRAULIC
UNIT
M25
CRUISE CONTROL
ACTUATOR
(TEMPOMAT)


X6031
X8533
X70



B18
BRAKE FLUID
LEVEL SWITCH
COMPONENT LOCATION VIEWS










K2
HORN RELAYX111
X372
H1w
ANTI–THEFT HORN
(ALPINE)
K4
BLOWER RELAY
K16
HAZARD FLASHER
RELAYK47
FRONT FOG LIGHT
RELAY
K48
LOW BEAM LIGHT
RELAYK9
UNLOADER RELAY,
TERMINAL 15
K19
COMPRESSOR
CONTROL RELAY
K21
NORMAL SPEED
RELAYK22
HIGH SPEED
RELAY
K94
ENGINE CONTROL
RELAY (ABS/ASC)
K95
VALVE RELAY
(ABS/ASC)

K33a
AIR CONDITIONING
RELAY, MOTRONIC