1999 BMW 318ti Electrical Troubleshooting Manual

X5401







.5 BRX371
1S21w
ENGINE HOOD
SWITCH
.5 BRX516
3
S37
GLOVE BOX LIGHT
SWITCHS18
HAZARD SWITCH
1E82
TRANSMISSION
POSITION INDICA-
TOR LIGHT
X1193
.5 BR
X218
0670.4-144 BR 2.5 BR
4 BR .5 BR
0670.4-15




GROUND DISTRIBUTION
GROUND X10012 

X10012
.75 BR
X133052 TELEPHONE
CONNECTOR
CENTER CONSOLE

GROUND DISTRIBUTION
GROUND X13006









1.5 BR
0670.4-18
H5
RIGHT REAR TURN
LIGHTH28
RIGHT BACK UP
LIGHTH30
RIGHT TAIL LIGHTH31
RIGHT BRAKE
LIGHTH39
RIGHT TAIL LIGHT
8 X318
E47
RIGHT LUGGAGE
COMPARTMENT
LIGHT ASSEMBLY
1.5 BR
0670.4-18 H6
LEFT REAR TURN
LIGHTH24
LEFT BRAKE LIGHTH25
LEFT TAIL LIGHTH27
LEFT BACK UP
LIGHTH37
LEFT TAIL LIGHT
5 X319
E46
LEFT LUGGAGE
COMPARTMENT
LIGHT ASSEMBLY
 

GROUND DISTRIBUTION
X7091 X710
1
.75 BR .75 BR
X6381
GROUND X13006







X7131B17
RIGHT REAR
BRAKE PAD
SENSOR
2.5 BRM2
FUEL PUMP
X3521S14
DRIVER’S DOOR
JAMB SWITCH
.5 BRX733
1E57
DRIVER’S SEAT
HEATER
.5 BRX732
1
4 BR E56
DRIVER’S SEAT-
BACK HEATERE44
RIGHT LICENSE
PLATE LIGHT
E43
LEFT LICENSE
PLATE LIGHT
X13007
.5 BR





0670.4-17
1 BR
X4002
1.5 BR 1.5 BR .5 BR
X18441N8
ANTENNA
AMPLIFIER AM/FM
2.5 BR
X13006
 

X7112S61y
LUGGAGE
COMPARTMENT
LIGHT SWITCH
.75 BR
X12923S302
CENTRAL LOCKING
SWITCH
.35 BR
.5 BRX1892
1N22
CD CHANGER
X3801E9
REAR DEFOGGER I
2.5 BR
X102711E32z
REAR CENTER
INTERIOR LIGHT
.5 BR LUGGAGE
COMPARTMENT
TELEPHONE
CONNECTOR
X4131H34
HIGH LEVEL STOP
LIGHT
.5 BR
X6036S51
DRIVER’S SEAT,
SEAT CONTROL
SWITCH
2.5 BR
2.5 BRX840
X2751
2.5 BR

GROUND DISTRIBUTION
GROUND X13009







X185181S59
PASSENGER’S
SEAT BELT SWITCH
X102182
X13011
1 BR/ORA113
SEAT OCCUPANCY
DETECTOR
.35 BR/OR.5 BR/OR .35 BR/OR
X13009





 

N12w
ANTI–THEFT
CONTROL MODULE
(ALPINE)
.75 BR/OR
X130253
X7781S58
DRIVER’S SEAT
BELT SWITCHX18861B79
PASSENGER’S
SIDE IMPACT
SENSORX18851
B78
DRIVER’S SIDE IM-
PACT SENSOR
.35 BR/OR
.35 BR/OR



GROUND DISTRIBUTION
GROUNDS X13016 AND X18723









 

X1812615N9
RADIOX171793A18
HIFI AMPLIFIER
X1301615 X18126
N9
RADIO
2.5 BR 1.5 BR
2.5 BR
X187232.5 BR
X824
STEREO
X171594H66
SUBWOOFER
2.5 BR
WITH SUBWOOFER2.5 BR
2.5 BRX6053
HIFI
X17289





BLOCK DIAGRAM
0670.5 DATA LINK






TXDRXD
D100
DATA LINK
CONNECTOR

CENTRAL BODY
ELECTRONICS
(ZKE IV)
6100.0
INSTRUMENT
CLUSTER
6211.0 BOARD COMPUTER
(BC – LOW)
6581.3
SLIP CONTROL
(ABS/ASC)
3450.1
CRUISE CONTROL
(TEMPOMAT)
6571.0 ELECTRONIC TRANS-
MISSION CONTROL
(EGS A4S 270R)
2460.2
SUPPLEMENTAL
RESTRAINT
SYSTEM (AIR BAG)
3234.0
 

ENGINE CONTROL
SYSTEM (DME M5.2,
4–CYLINDER M44)
1210.20
DRIVE–AW AY
PROTECTION (EWS III)
6135.1





D100
DATA LINK
CONNECTOR
DATA LINK






X6866
.5 WS/VI
88 X8500
.5 WS/VI
A8500
TRANSMISSION
CONTROL MODULE
(EGS) TXD
X600217
17 X20
.5 WS/VI
.35 WS/VI
0670.5-02
 

20
88 X6000
.5 WS/VI
A6000
ENGINE CONTROL
MODULE (DME) TXD
TXD, DATA LINK CONNECTOR, PINS 17 AND 20





A52
SLIP CONTROL
MODULE
(ABS/ASC)
DATA LINK
TXD






X13
X183
.35 WS/VI
X442
A35y
BOARD
COMPUTER
(BC – LOW) X10245
A2w
INSTRUMENT
CLUSTER X16
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE X74
X1170
TXDTXD
TXD .35 WS/VI
.5 WS/VI .5 WS/VI
212
36
9TXD
0670.5-01
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV) X10182TXD .5 WS/VI
11
.35 WS/VI
.35 WS/VI
18
 

A8
CRUISE CONTROL
MODULE
(TEMPOMAT) X22TXD .35 WS/VI
17
A837
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS III) X1805
.35 WS/VI
4
TXD.5 WS/VI