1999 BMW 318ti Electrical Troubleshooting Manual









.5 BRX741
1E59
PASSENGER’S
SEATBACK HEATER
1
S13
PASSENGER’S
DOOR JAMB
SWITCH
X351
2.5 BR.5 BR
X13005
X7401E58
PASSENGER’S
SEAT HEATER
.5 BR
4 BR
 



GROUND X495
GROUND DISTRIBUTION
0670.4-07 S56
PASSENGER’S
SEAT, SEAT
CONTROL SWITCH
X6046
X2791
2.5 BR

GROUND DISTRIBUTION
GROUNDS X498, X861, AND X1165








1.5 BR
Y1
ABS HYDRAULIC
UNIT
X1176
20 X113939
X1165
K125
ABS PUMP MOTOR
RELAY, TIMED 

.5 BRS127y
PASSENGER’S
POWER WINDOW
SWITCH
X324
4
.5 BR X3164S126y
DRIVER’S POWER
WINDOW SWITCH
X498
B2
LEFT FRONT
SPEED SENSOR –
ABS
X114
3
.5 BR
2.5 BR
Y6133
AIR PUMP
X6133
1
X861
4 BR

GROUND DISTRIBUTION
GROUNDS X1166 AND X1441








.5 BRX74
6
X1441
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE 

1 BRA52
SLIP CONTROL
MODULE
(ABS/ASC)
X113
3
.5 BR 2
X1166
.5 BR41.75 BR19
X11395
.75 BR3
B1
RIGHT FRONT
SPEED SENSOR –
ABS
X1170

X6492

GROUND DISTRIBUTION
GROUND X6454








X6454
A6000
ENGINE CONTROL
MODULE (DME)
55
W6165
SHIELD UP TO
10mm BEFORE
IGNITION COIL
CONNECTOR
346
.5 BR
B6209
HALL EFFECT CAM-
SHAFT SENSOR
X6209
3
B6217
HOT FILM AIR
MASS METER
X6217
1
X6463
2.5 BR 2.5 BR 2.5 BR 1.5 BR1.5 BR .5 BR .5 BRA8500
TRANSMISSION
CONTROL MODULE
(EGS)
X8500
28
X6002
4 BR
D100
DATA LINK
CONNECTOR1.5 BR
19
 

346
6 BR
X600028
1.5 BR 1 BR
X6462
X6460
W6203
CRANKSHAFT
POSITION/RPM
SENSOR SHIELD
W6203
CRANKSHAFT
POSITION/RPM
SENSOR SHIELD
3X6203
1.5 BR
K6326
UNLOADER RELAY,
TERMINAL 15
X6326
4
1.5 BR
K6304
SECONDARY AIR
PUMP RELAY
X6304
5
.35 BR

GROUND DISTRIBUTION
GROUND X6456







1 BRT6151
CYL. 1 IGNITION
COIL
X6900
X61512





T6153
CYL. 3 IGNITION
COIL
X6153
2
1 BR
T6152
CYL. 2 IGNITION
COIL
X6152
2
1 BR
T6154
CYL. 4 IGNITION
COIL
X6154
2
1 BR
1.5 BR
X61503
X6456
1.5 BR
 





A35y
BOARD
COMPUTER
(BC – LOW)
X658
GROUND DISTRIBUTION
GROUND X10010







.5 BR/OR
X1624
A64
WIPER/WASHER
MODULE (LOW II)
.5 BR/OR
. 75 BR/ORN17
CRASH CONTROL
MODULE
A8
CRUISE CONTROL
MODULE
(TEMPOMAT)
.35 BR/ORX770
2B21
ON–BOARD
COMPUTER
TEMPERATURE
SENSOR
X28515 A2w
INSTRUMENT
CLUSTER
.35 BR/OR2
M25
CRUISE CONTROL
ACTUATOR
(TEMPOMAT)
X70
X10010
X102456
X10009
.5 BR/
OR
1 BR/OR 21
.5 BR/OR.75 BR/
OR5A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
X10182.35 BR/
OR3A110
DIGITAL CLOCK
X10263
 

.35 BR/
OR1S32
CLUTCH SWITCH
X121
WITHOUT EGS
.5 BR/
OR13.35 BR/
ORX22
2
WITH EGS
D110
OBD II
CONNECTOR
.5 BR/OR
5 X19527

E28
FRONT CIGAR
LIGHTER

GROUND DISTRIBUTION
GROUND X10012







.35 BR
E29
FRONT CIGAR
LIGHTER LIGHT
2.5 BR
.35 BRX532
1
.5 BR2


S8503
PROGRAM SWITCH
X8503
X1014
1
X10064
4 BR2.5 BR
0670.4-16
 

S6
ASC SWITCH
X5214
A51
WIPER/WASHER
MODULE
X285
7
S5
WIPER/WASHER
SWITCH
X2951
.75 BR




GROUND DISTRIBUTION
GROUND X10012







X7712B14
EVAPORATOR
TEMPERATURE
SENSOR
2.5 BR.35 BR
X132741S530
IHKS CONTROL
SWITCH2
2
E103
CLIMATE CONTROL
SWITCH
ILLUMINATION
.5 BR .5 BR .5 BR
X818
.5 BR
M30
BLOWER MOTOR
X817
1
2.5 BR
X102344S531
TEMPERATURE
WHEEL SWITCH
.5 BR
X15222M111
FRESH AIR
RECIRCULATION
MOTOR
X1517
X11250
A107
INTEGRATED
HEATING– AND
CLIMATE CONTROL
MODULE 

X359
2.5 BR
0670.4-16
M30
BLOWER MOTOR
X13287
1
2.5 BR
X15181S218
REAR DEFOGGER
SWITCH
X15222E103
CLIMATE CONTROL
SWITCH
ILLUMINATION
X18782
.35 BR .35 BR
2.5 BR
WITH HEATING
CONTROL (HS)WITH INTEGRATED
HEATING– AND
CLIMATE CONTROL
(IHKS)
2.5 BR