1998 BMW 318is fuse

BMW NA


\b\b
\f


\f \f 
ELECTRICAL TROUBLESHOOTING
MANUAL
SERIES 3 – E36 (318is, 323i, 328i, M3,
INCL. CONVERTIBLE)
SCHEMATICS MODEL YEAR 1998

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)

3450.0
SLIP CONTROL (ABS)
3450.1SLIP 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








\b
ABS CONTROL MODULE/HYDRAULIC UNIT, A202 3450.0. . . . . .
ABS HYDRAULIC UNIT, Y1 3450.1-06 . . . . . . . . . . . . . . . . . . . . . . . . .
ABS HYDRAULIC UNI T, Y1w 3450.1-01
. . . . . . . . . . . . . . . . . . . . . . . .
ABS PEDAL TR AVEL SENSOR, S123 3450.1-01. . . . . . . . . . . . . . . . . . . .
ABS PUMP MO TOR REL AY, K75 3450.
. . . . . . . . . . . . . . . . . . . . . . . .
ABS PUMP MO TOR REL AY, TIMED, K125 3450.1-00
. . . . . . . . . . . .
ABS PUMP MO TOR REL AY, TIMED, K125 3450.1-05
. . . . . . . . . . . .
ABS RELAY, K10 3450. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
ACCELERATOR PEDAL POSITION SENSOR (ASC), R6255 3450.1-05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
AIR BAG GAS GENERATOR, DRIVER’S, G5 3234.0-00 . . . . . . . . . .
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, M6133 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 6424.0-00 . . . . . . . . . . . . . . . . . . .
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 6332.1-00 . . . . . . . . . . . . . . . . . . . . . .
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 0670.2-04 . . . . . . . . . . . . . . . . . . . . . . . .
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 0670.2-00 . . . . . . . . . .
BACK UP LIGHT, LEFT, H27 6322.0-00 . . . . . . . . . . . . . . . . . . . . . . . .
BACK UP LIGHT, RIGHT, H28 6322.0-00 . . . . . . . . . . . . . . . . . . . . . . .
BACK UP LIGHTS 6322.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BATTERY, G1 0670.2-00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

BLOWER MOTOR, M30 6410.5-01 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER MOTOR, M30 6412.10-01 . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER MOTOR, M30 6450.7-00 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER RELAY, K4 6410.5-00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOWER RELAY, K4 6412.10-00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 6100.0-00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . .




INDEX








FUEL INJECTION VALVE, CYL. 3, Y6103 1210.. . . . . . . . . . . . . . . . .
FUEL INJECTION VALVE, CYL. 4, Y6104 1210.. . . . . . . . . . . . . . . . .
FUEL INJECTION VALVE, CYL. 5, Y6105 1210.17-01. . . . . . . . . . . .
FUEL INJECTION VALVE, CYL. 6, Y6106 1210.17-01. . . . . . . . . . . .
FUEL LEVEL SENSOR, B6 6211.0-04. . . . . . . . . . . . . . . . . . . . . . . . .
FUEL PUMP RELAY, CYL. 1–6, K6301 1210.. . . . . . . . . . . . . . . . . . .
FUEL PUMP RELAY, K6301w 1210.17-04. . . . . . . . . . . . . . . . . . . . . .
FUEL PUMP, M2 1210.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL TANK PRESSURE SENSOR, B72 1210.17-10. . . . . . . . . . . . .
FUEL TANK PRESSURE SENSOR, B72 1210.20-05. . . . . . . . . . . . .
FUEL TANK SENSOR II, B25y 6211.0-04. . . . . . . . . . . . . . . . . . . . . . .
FUSE CHART 0670.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUSE DETAILS 0670.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAS FILLER LOCK MOTOR, M16 5126.0-00. . . . . . . . . . . . . . . . . . .
GEAR SHIFT LEVER INDICATOR, E96 6300.0-01. . . . . . . . . . . . . . .
GENERATOR, G6509 1230.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GLOVE BOX LIGHT, E42 6332.1-00. . . . . . . . . . . . . . . . . . . . . . . . . . .
GLOVE BOX LIGHT/CASSETTE BOX/ASHTRAY LIGHT/
CHARGING SOCKET/CIGAR LIGHTER 6332.1. . . . . . . . . . . . . . . .
GLOVE BOX LOCK MOTOR, M107 5126.0-00. . . . . . . . . . . . . . . . . .
GROUND DISTRIBUTION 0670.4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HALL EFFECT CAMSHAFT SENSOR, B6209 1210.20-04. . . . . . . .
HARD TOP CONNECTOR 1, E99 5430.1-00. . . . . . . . . . . . . . . . . . . .
HARD TOP CONNECTOR 2, E100y 6330.3-03. . . . . . . . . . . . . . . . . .
HAZARD FLASHER RELAY, K16 6313.0-00. . . . . . . . . . . . . . . . . . . .
HAZARD SWITCH, S18 6313.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEADLIGHT WASHER (SRA) 6167.1. . . . . . . . . . . . . . . . . . . . . . . . . .
HEADLIGHT, LEFT, E7 6313.0-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . HEADLIGHT, LEFT, E7 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEADLIGHT, RIGHT, E8 6313.0-02. . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEADLIGHT, RIGHT, E8 6314.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEADLIGHT/FOG LIGHT WASHER PUMP, M7 6167.1-00. . . . . . . .
HEADLIGHTS/FOG LIGHTS 6312.0. . . . . . . . . . . . . . . . . . . . . . . . . . .
HEAT EXCHANGER TEMPERATURE SENSOR, LH,
B11 6410.5-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEAT EXCHANGER TEMPERATURE SENSOR, LH,
B11 6450.7-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEAT EXCHANGER TEMPERATURE SENSOR, RH,
B12 6450.7-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEATED SEATS 5203.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HIFI AMPLIFIER, A18 6510.1-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HIGH BEAM LIGHT RELAY, K46 6312.0-01. . . . . . . . . . . . . . . . . . . . .
HIGH BEAM LIGHT, E12 6312.0-01. . . . . . . . . . . . . . . . . . . . . . . . . . . .
HIGH BEAM LIGHT, LEFT, E11 6312.0-01. . . . . . . . . . . . . . . . . . . . . .
HIGH LEVEL STOP LIGHT, H34 6325.0. . . . . . . . . . . . . . . . . . . . . . . .
HIGH LEVEL STOP LIGHT/REAR SPOILER, H34z 6325.0. . . . . . .
HIGH RANGE SPEAKER, LEFT FRONT, H59 6510.0-00. . . . . . . . .
HIGH RANGE SPEAKER, LEFT FRONT, H59 6510.1-01. . . . . . . . .
HIGH RANGE SPEAKER, LEFT REAR, H56 6510.1-01. . . . . . . . . .
HIGH RANGE SPEAKER, RIGHT FRONT, H50 6510.0-00. . . . . . . .
HIGH RANGE SPEAKER, RIGHT FRONT, H50 6510.1-02. . . . . . . .
HIGH RANGE SPEAKER, RIGHT REAR, H53 6510.1-02. . . . . . . . .
HIGH SPEED RELAY, K22 6450.7-05. . . . . . . . . . . . . . . . . . . . . . . . . .
HIGH SPEED RELAY, K22 6450.7-06. . . . . . . . . . . . . . . . . . . . . . . . . .
HORN 6133.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORN RELAY (ALPINE), K108 6575.2-02. . . . . . . . . . . . . . . . . . . . . .





"#'($
0110.0 INTRODUCTION $%%




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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.

 $%%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 RESIS-
TANCE SENSOR
VARIABLE CON-
TACT IS MOVED BY
AN EXTERNAL
FORCE
VARIABLE RESIS-
TOR RESISTANCE
IS CHANGED BY
TEMPERATURE OR
PRESSURE
DIODE CURRENT
CAN FLOW ONLY IN
DIRECTION OF
ARROW
ZENER DIODE TO
REGULATE VOLT-
AGE
LIGHT EMITTING
DIODE PERMANENT MAG-
NET MOTOR ONE
SPEED
PERMANENT MAG-
NET MOTOR TWO
SPEEDS SOLENOID
SOLENOID CON-
TROLLED 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




 $%%




%%&


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 ACCES-
SORY, RUN OR START 15I
R
GROUND 31
POWER STATUS DESCRIPTION
VOLTAGE: SUP-
PLIED AT ALL TIMES
VOLTAGE: IGNITION
SWITCH IN RUN OR
START
VOLTAGE: IGNITION
SWITCH IN ACCES-
SORY, 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 PROGRES-
SION AND FUR-
THER CIRCUITS
CONNECTED TO
GROUND X497 ARE
SHOWN IN CELL
”0670.4 GROUND
DISTRIBUTION” AT
GROUND X497
THE COMPLETE
WIRE PROGRES-
SION AND FUR-
THER CIRCUITS
CONNECTED TO
FUSE 18 ARE
SHOWN IN CELL
”0670.3 FUSE
DETAILS” AT FUSE
18
CURRENT PATH IS
CONTINUED 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 CIR-
CUIT
A2
INSTRUMENT
CLUSTER
X16
11RXD
ARROW SHOWS
DIRECTION OF
CURRENT FLOW
AND IS REPEATED
WHERE CURRENT
PATH CONTINUES
X497
X1812615
X491