1999 BMW 318is ABS

BMW NA
ELECTRICAL TROUBLESHOOTING
MANUAL
SERIES 3 – E36 (318i, 323i, 328i, M3, COUPE AND
CONVERTIBLE)
SCHEMATICS MODEL YEAR 1999
0100.0 INDEX
0110.0INTRODUCTION 0140.0 SYMBOLS 0670.0 POWER DISTRIBUTION CHART 0670.1 FUSE CHART
0670.2 POWER DISTRIBUTION
0670.3 FUSE DETAILS
0670.4 GROUND DISTRIBUTION
0670.5DATA LINK
1210.17
ENGINE CONTROL SYSTEM
MS41.1 (6–CYLINDER M52)


1210.20

ENGINE CONTROL SYSTEM
(DME M5.2, 4–CYLINDER M44)
1230.0 CHARGING SYSTEM
1240.0 START
2460.2 ELECTRONIC TRANSMISSION
CONTROL (EGS A4S 270R)

2460.4
ELECTRONIC TRANSMISSION
CONTROL (EGS A5S 310Z)


3234.0

SUPPLEMENTAL RESTRAINT
SYSTEM (AIR BAG)
3450.1 SLIP CONTROL (ABS/ASC)
5116.0 POWER MIRRORS
5120.0ZKE DOOR LOCK HEATING (TSH) 5126.0 ZKE CENTRAL LOCKING (ZV) 5133.1 POWER WINDOWS (FH) 5200.0 POWER SEATS
5203.0 HEATED SEATS


5410.1

POWER TILT/SLIDE SUNROOF
(SHD)
5430.1ELECTRICAL CONVERTIBLE TOP
6100.0
CENTRAL BODY ELECTRONICS
(ZKE IV)
6133.0 HORN


6135.0

DRIVE–AWAY PROTECTION
(EWS II)
6160.1 WIPER/WASHER MODULE (WWM)
6167.1HEADLIGHT WASHER (SRA)
6169.0
WINDSHIELD WASHER JET
HEATERS
6211.0 INSTRUMENT CLUSTER
6213.1 ANALOG CLOCK
6213.2 MULTI–FUNCTION CLOCK
6214.0 ON–BOARD DISPLAY




0100.0 INDEX









ABS HYDRAULIC UNIT, Y1 3450.1-06. . . . . . . . . . . . . . . . . . . . . . . . .
ABS HYDRAULIC UNIT, Y1w 3450.1-01. . . . . . . . . . . . . . . . . . . . . . . .
ABS PEDAL TRAVEL SENSOR, S123 3450.1-01. . . . . . . . . . . . . . . .
ABS PUMP MOTOR RELAY, TIMED, K125 3450.1-00. . . . . . . . . . . .
ABS PUMP MOTOR RELAY, TIMED, K125 3450.1-05. . . . . . . . . . . .
ABS RELAY, K10 3450.1-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR BAG GAS GENERATOR, DRIVER’S, G5 3234.0-00. . . . . . . . . .
AIR BAG GAS GENERATOR, LEFT SIDE, G14 3234.0-01. . . . . . . .
AIR BAG GAS GENERATOR, PASSENGER’S, G6 3234.0-00. . . . .
AIR BAG GAS GENERATOR, RIGHT SIDE, G15 3234.0-01. . . . . .
AIR CONDITIONING COMPRESSOR, Y2 6450.7-04. . . . . . . . . . . . .
AIR PUMP, Y6133 1210.17-05. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR PUMP, Y6133 1210.20-09. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANALOG CLOCK 6213.1-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANALOG CLOCK, N5 6213.1-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANTENNA AMPLIFIER AM/FM, N8 6424.0. . . . . . . . . . . . . . . . . . . . . .
ANTI–THEFT CONTROL MODULE (ALPINE), N12w 6575.2. . . . . .
ANTI–THEFT HORN (ALPINE), H1w 6575.2-02. . . . . . . . . . . . . . . . .
ANTI–THEFT SYSTEM (ALPINE) 6575.2. . . . . . . . . . . . . . . . . . . . . . .
ASC DIODE, V7 3450.1-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASC SWITCH, S6 3450.1-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASC SWITCH, S6 3450.1-07. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASHTRAY LIGHT, FRONT, E25 6300.0-01. . . . . . . . . . . . . . . . . . . . . .
ASHTRAY LIGHT, REAR, E28y 6300.0-01. . . . . . . . . . . . . . . . . . . . . .
AUTOMATIC CLIMATE CONTROL MODULE, A115 6450.7. . . . . . .
AUTOMATIC TRANSMISSION RANGE SWITCH, S3 2460.. . . . . . .
AUXILIARY FAN MOTOR,
M9 6450.7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AUXILIARY FUSE BOX IN LUGGAGE COMPARTMENT,
P96 0670.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AUXILIARY FUSE BOX, P95 0670.2-03. . . . . . . . . . . . . . . . . . . . . . . .
AUXILIARY FUSE BOX, P97 0670.2. . . . . . . . . . . . . . . . . . . . . . . . . . .
AUXILIARY THROTTLE POSITION MOTOR (ADS), M93 3450.1-02
AUXILIARY THROTTLE POSITION MOTOR (ADS), M93 3450.1-07
AUXILIARY THROTTLE POSITION SENSOR, R31 3450.1-04. . . .
AUXILIARY TURN LIGHT, LEFT FRONT, H9 6313.0-02. . . . . . . . . .
AUXILIARY TURN LIGHT, RIGHT FRONT, H8 6313.0-02. . . . . . . . .
B+ JUMP START JUNCTION POINT, G6430 0670.2. . . . . . . . . . . . .
BACK UP LIGHT, LEFT, H27 6322.0-00. . . . . . . . . . . . . . . . . . . . . . . .
BACK UP LIGHT, RIGHT, H28 6322.0-00. . . . . . . . . . . . . . . . . . . . . . .
BACK UP LIGHTS 6322.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BATTERY, G1 0670.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER MOTOR, M30 6410.5-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER MOTOR, M30 6412.10-01. . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER MOTOR, M30 6412.20-00. . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER MOTOR, M30 6450.7-00. . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER RELAY, K4 6410.5-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER RELAY, K4 6412.10-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER RELAY, K4 6412.20-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER RELAY, K4 6450.7-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER RESISTORS, R11 6410.5-01. . . . . . . . . . . . . . . . . . . . . . . .
BLOWER RESISTORS, R11 6412.10-01. . . . . . . . . . . . . . . . . . . . . . .
BLOWER SWITCH, S75 6410.5-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER SWITCH, S75 6412.10-00. . . . . . . . . . . . . . . . . . . . . . . . . . .
BODY ELECTRONICS CONTROL MODULE
(ZKE IV), A104 6100.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




INDEX









SLIP CONTROL (ABS/ASC) 3450.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SLIP CONTROL MODULE (ABS/ASC), A52 3450.1. . . . . . . . . . . . . .
SOLENOID VALVE (”RUNNING LOSSES”), Y6550 1210.17-05. . . .
SPATIAL SOUND RELAY, K128 6510.1-05. . . . . . . . . . . . . . . . . . . . . .
SPEAKER, LEFT REAR, H46 6510.0-00. . . . . . . . . . . . . . . . . . . . . . .
SPEAKER, LEFT REAR, H46 6510.1. . . . . . . . . . . . . . . . . . . . . . . . . .
SPEAKER, RIGHT REAR, H45 6510.0-00. . . . . . . . . . . . . . . . . . . . . .
SPEAKER, RIGHT REAR, H45 6510.1. . . . . . . . . . . . . . . . . . . . . . . . .
SPEED SENSOR – ABS, LEFT FRONT, B2 3450.1. . . . . . . . . . . . . .
SPEED SENSOR – ABS, LEFT REAR, B4 3450.1. . . . . . . . . . . . . . .
SPEED SENSOR – ABS, RIGHT FRONT, B1 3450.1. . . . . . . . . . . . .
SPEED SENSOR – ABS, RIGHT REAR, B3 3450.1. . . . . . . . . . . . . .
SPLICE LOCATION VIEWS 8000.0. . . . . . . . . . . . . . . . . . . . . . . . . . . .
START 1240.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTER IMMOBILIZATION SWITCH, S235 6135.0-00. . . . . . . . . .
STARTER, M6510 1240.0-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUBWOOFER, H66 6510.1-06. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUPPLEMENTAL RESTRAINT SYSTEM
CONTROL MODULE, A12 3234.0. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG) 3234.0. . . . . .
SUPPRESSION FILTER, C900 6424.0. . . . . . . . . . . . . . . . . . . . . . . . .
SYMBOLS 0140.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TAIL LIGHT, LEFT, H25 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TAIL LIGHT, LEFT, H37 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TAIL LIGHT, RIGHT, H30 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TAIL LIGHT, RIGHT, H39 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TELEPHONE CONNECTOR 6561.0. . . . . . . . . . . . . . . . . . . . . . . . . . .
TEMPERATURE SWITCH, S36 6450.7-05. . . . . . . . . . . . . . . . . . . . . . THERMOSTAT, A32y 6410.5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THROTTLE POSITION SENSOR (ASC), R6255z 3450.1-05. . . . . .
THROTTLE POSITION SENSOR, R6252 1210.. . . . . . . . . . . . . . . . .
TILT/SLIDE SUNROOF CONTROL ASSEMBLY, A56 5410.1-00. . .
TILT/SLIDE SUNROOF SWITCH (SHD), S38 5410.1-00. . . . . . . . . .
TOP HIFI SWITCH, S303y 6510.1-04. . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMISSION CONTROL MODULE (EGS), A7000 2460.4-00. .
TRANSMISSION CONTROL MODULE (EGS), A8500 2460.2-00. .
TRANSMISSION POSITION INDICATOR LIGHT, E82 6300.0-01. .
TRANSMISSION VALVE UNIT, Y8505 2460.2-01. . . . . . . . . . . . . . . .
TRANSMISSION VALVE UNIT, Y8505y 2460.2-07. . . . . . . . . . . . . . .
TRANSMISSION VALVE UNIT, Y8505y 2460.4-01. . . . . . . . . . . . . . .
TRANSMITTER MODULE (EWS II), A835 6135.0-01. . . . . . . . . . . . .
TURN LIGHT, LEFT FRONT, H7 6313.0-02. . . . . . . . . . . . . . . . . . . . .
TURN LIGHT, LEFT REAR, H6 6313.0-02. . . . . . . . . . . . . . . . . . . . . .
TURN LIGHT, RIGHT FRONT, H4 6313.0-02. . . . . . . . . . . . . . . . . . . .
TURN LIGHT, RIGHT REAR, H5 6313.0-02. . . . . . . . . . . . . . . . . . . . .
TURN/HAZARD LIGHTS 6313.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNCOUPLING DIODE, V6 6412.20-00. . . . . . . . . . . . . . . . . . . . . . . . .
UNLOADER RELAY, TERMINAL 15, K6326 1210.. . . . . . . . . . . . . . .
UNLOADER RELAY, TERMINAL 15, K9 5203.0-00. . . . . . . . . . . . . .
VARIABLE CAMSHAFT CONTROL VALVE 1, Y6275 1210.17-05. .
VEHICLE SPEED SENSOR, B10 6211.0-04. . . . . . . . . . . . . . . . . . . .
WASHER FLUID LEVEL SWITCH, S64 6581.2-02. . . . . . . . . . . . . . .
WASHER JET HEATER, LEFT, E51 6169.0-00. . . . . . . . . . . . . . . . . .
WASHER JET HEATER, RIGHT, E52 6169.0-00. . . . . . . . . . . . . . . . .
WASHER PUMP, M4 6160.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WATER VALVE ASSEMBLY, Y4 6410.5-00. . . . . . . . . . . . . . . . . . . . . .





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.
Included in this ETM are foldout block diagrams. These are overviews of the entire system (EGS,
ABS, AC, etc.) which helps understand the relationships between various components and
control unit of the system being diagnosed.

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

23
K48
LOW BEAM LIGHT
RELAY 11 12 13456789
38
37
35
34
33
32
31 42
41
40
39 43 44

0670.0 POWER DISTRIBUTION CHART
FRONT POWER DISTRIBUTION BOX










K2
HORN RELAYK47
FRONT FOG LIGHT
RELAYK16
HAZARD FLASHER
RELAYK4
BLOWER RELAY
K13
REAR DEFOGGER
RELAYK10
ABS RELAYK22
HIGH SPEED
RELAYK19
COMPRESSOR
CONTROL RELAYK21
NORMAL SPEED
RELAY K6300
ENGINE CONTROL
MODULE RELAYK6301w
FUEL PUMP RELAY
X56X44X45X64X58
X292X54
X53X51X52
X6300X630146
45
36110
14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
FUSES FUSES
X0
K6304
SECONDARY AIR
PUMP RELAYX6304
X11393K125
ABS PUMP MOTOR
RELAY, TIMEDK6301
CYL. 1–6 FUEL
PUMP RELAY




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
1210.20
1230.0
1240.0
3234.0
3450.1
5116.0



30A 5A 30A 15A 30A 20A 5A 30A 7.5A 7.5A 5A 15A 5A 5A 5A 10A 5A 7.5A


20A15A 30A 5A 5A
ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
CHARGING SYSTEM
START
SLIP CONTROL (ABS/ASC)
POWER MIRRORS 2460.4


ELECTRONIC TRANSMISSION CONTROL (EGS A5S 310Z) 2460.2

ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)

5A 30A 15A 10A 10A
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
30A









1210.17ENGINE CONTROL SYSTEM MS41.1 (6–CYLINDER M52)
5126.0

ZKE CENTRAL LOCKING (ZV)

5430.1
6100.0ELECTRICAL CONVERTIBLE TOP
CENTRAL BODY ELECTRONICS (ZKE IV) 5133.1
5200.0
5203.0
5410.1


POWER WINDOWS (FH)
POWER SEATS
HEATED SEATS
POWER TILT/SLIDE SUNROOF (SHD)













6133.0HORN

6135.0DRIVE–AWAY PROTECTION (EWS II)




5120.0
ZKE DOOR LOCK HEATING (TSH)

6160.1WIPER/WASHER MODULE (WWM)

1210.20
1230.0
1240.0
3234.0
3450.1
5116.0ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
CHARGING SYSTEM
START
SLIP CONTROL (ABS/ASC)
POWER MIRRORS 2460.4ELECTRONIC TRANSMISSION CONTROL (EGS A5S 310Z) 2460.2ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)




FUSE CHART




FUSES 30 TO 50




FUSE NUMBER
39
7.5A 5A 30A 10A 15A 25A 30A 7.5A 30A 30A 15A 7.5A 15A30A10A

40        38 37 36 35
5A



7.5A


15A



1210.17ENGINE CONTROL SYSTEM MS41.1 (6–CYLINDER M52)


5430.1
6100.0
6133.0ELECTRICAL CONVERTIBLE TOP
CENTRAL BODY ELECTRONICS (ZKE IV)
HORN 5133.1
5200.0
5203.0
5410.1POWER WINDOWS (FH)
POWER SEATS
HEATED SEATS
POWER TILT/SLIDE SUNROOF (SHD) 5126.0ZKE CENTRAL LOCKING (ZV)














40A






20A


5A










6135.0DRIVE–AWAY PROTECTION (EWS II)



5120.0ZKE DOOR LOCK HEATING (TSH)
6160.1WIPER/WASHER MODULE (WWM)




FUSES 10, 11, AND 12








FUSE DETAILS
P90
FRONT POWER
DISTRIBUTION BOX F11
7.5A F1030AF127.5A
56b 56b
8
2
K10
ABS RELAY 2 X54
20
1 GE/GR
2.5 RT/BL
6312.0
1 GE/GN
A4
CHECK CONTROL
MODULE 15 X1074
4
1 GE/RT 1 GE/BLX10015
6350.0
2 X100702 X10075
6312.0
6312.0 WITH CCM WITHOUT CCM WITH CCM WITHOUT CCM
E13
LEFT LOW BEAM
LIGHTE14
RIGHT LOW BEAM
LIGHT
6581.2
X10016
A52
SLIP CONTROL
MODULE
(ABS/ASC) 51 X1171
3450.1
2.5 RT/BL
2.5 RT/BL
X10055
3450.1
K125
ABS PUMP MOTOR
RELAY, TIMED 8 X11393
2.5 RT/BL
3450.12.5 RT/BL
318i323i, 328i, M3