1999 BMW 318ti Electrical Troubleshooting Manual







INSTRUMENT CLUSTER
S2
IGNITION SWITCH
4) OPEN
MOMENTARILY
IN START AND
OFF, OPEN
WITH KEY
REMOVED
5) CLOSED IN
OFF, START,
RUN AND AC-
CESSORY P90
FRONT POWER
DISTRIBUTION BOX
F315A

A2w
INSTRUMENT
CLUSTER 22
22
.75 BR
X1713
.5 GN/RT
A6000
ENGINE CONTROL
MODULE (DME)
42
X173
2 X10018
X6000
4 5
FUSE DETAILS
0670.3
.5 GN/RT
 

31
3
9
.35 SW/RT
X5222H10
CHIME MODULE
X5221
X173
GROUND
DISTRIBUTION
0670.4
X3312
X3311
.5 BL/SW
.75 BL/SW
X60313
GROUND
DISTRIBUTION
0670.4 .5 RT/GE .5 RT/GE
12
17 X20
X16
DATA LINK
0670.5
.35 WS/VI
.35 WS/VI
X183
D100
DATA LINK
CONNECTOR
20 X6002
.5 WS/VI




6213.0 CLOCK






X102633 5P90
FRONT POWER
DISTRIBUTION BOX F46
15A

FUSE DETAILS
0670.3
31A110
DIGITAL CLOCK X10263
2
GROUND
DISTRIBUTION
0670.4
.35 GR/RT
LIGHT SWITCH
DETAILS
6300.0
X10010
X1001832
6F31
5A

FUSE DETAILS
0670.3 2
 

31

.75 GR/SWX18337
7
21 021 0
PARK/TAIL/UNDER-
HOOD LIGHTS
6314.0F33
10A
6
12 1FUSE DETAILS
0670.3
X10018
2









F225A
P90
FRONT POWER
DISTRIBUTION BOX
45
HEADLIGHTS/FOG
LIGHTS
6312.0
FUSE DETAILS
0670.3
A51
WIPER/WASHER
MODULE
21 0
210
21 0
X13006
X196
4
2F25
5A
F3710A

1014
11 1 08 1
X285
X709
X70912
1X710X710
E43
LEFT LICENSE
PLATE LIGHTE44
RIGHT LICENSE
PLATE LIGHT .75 GR/SW
4 .35 GE/VI .35 GE1 GR/SW
.5 GR/SW

6300.0 LIGHT SWITCH DETAILS
FUSE DETAILS
0670.3 FUSE DETAILS
0670.3
1 GR/SW
X10017
GROUND
DISTRIBUTION
0670.4 .75 BR .75 BR
.75 GR/GE .75 GR/GE
31X461
GROUND
DISTRIBUTION
0670.4S8
LIGHT SWITCH
0) OFF
1) PARK LIGHTS ON
2) HEADLIGHTS ON
3) DIMMER
X173
 

6 X18337
1 GR/RT
F235A

6
2FUSE DETAILS
0670.3
X18333
X18333
6300.0-01
E97
LIGHT SWITCH
ILLUMINATION
10 X13
1 GR/SW
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV) X101822
.5 GR/SW3









6300.0-00
2 X16
31X1019
A2w
INSTRUMENT
CLUSTER .5 GR/RT
.5 GR/RT1 GR/RT
11 X10245A35y
BOARD
COMPUTER
(BC – LOW) .35 GR/RT

LIGHT SWITCH DETAILS
 

WITH INTEGRATED
HEATING– AND
CLIMATE CONTROL
(IHKS) WITH HEATING
CONTROL (HS)
5 X1518
S218
REAR DEFOGGER
SWITCH
6
X15181
1 X1522E103
CLIMATE CONTROL
SWITCH
ILLUMINATION
X15222
.35 GR/RT
X10012
GROUND
DISTRIBUTION
0670.4
1 X1522E103
CLIMATE CONTROL
SWITCH
ILLUMINATION
X15222
.5 GR/RT
X13274S530
IHKS CONTROL
SWITCH .35 GR/RT
6
GROUND
DISTRIBUTION
0670.4 X1521
1 2
X5163
X51645
GROUND
DISTRIBUTION
0670.4 TURN/HAZARD
LIGHTS
6313.0
.5 BL/GN
6300.0-02
X1319
.5 GR/RT .5 GR/RT
2 X532
1 X532
E29
FRONT CIGAR
LIGHTER LIGHT
X10012
GROUND
DISTRIBUTION
0670.4
X10263A110
DIGITAL CLOCK .35 GR/RT
2
X18126N9
RADIO .5 GR/RT
13
2 X1193E82
TRANSMISSION
POSITION INDICA-
TOR LIGHT
X11931
.5 GR/RTX5214
S6
ASC SWITCH
GROUND
DISTRIBUTION
0670.4 X35
5
.5 GR/RT
.35 GR/RT
GROUND
DISTRIBUTION
0670.4S18
HAZARD SWITCH
1) OFF
2) ON.5 GR/RT2 X521
X3225
1 GR/RT
.35 GR/RT
GROUND
DISTRIBUTION
0670.4









6300.0-01
X13129
.5 GR/RT
X13176A56
TILT/SLIDE SUN-
ROOF CONTROL
ASSEMBLY .5 BR
6

LIGHT SWITCH DETAILS
 

3 X643S38
TILT/SLIDE SUN-
ROOF SWITCH
(SHD)
X6434
.5 GR/RT
X12923
S302
CENTRAL LOCKING
SWITCH2 X1292
.35 GR/RT
GROUND
DISTRIBUTION
0670.4
X13006X498
GROUND
DISTRIBUTION
0670.4
3 X316S126y
DRIVER’S POWER
WINDOW SWITCH
X3164
.5 GR/RT
3 X324S127y
PASSENGER’S
POWER WINDOW
SWITCH
X3244
.5 GR/RT
GROUND
DISTRIBUTION
0670.4
X494
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
X6514
S53
DRIVER’S SEAT,
SEAT HEATER
SWITCH 1 X651
.5 GR/RT
X6584
S54
PASSENGER’S
SEAT, SEAT
HEATER SWITCH 1 X658
.5 GR/RT
GROUND
DISTRIBUTION
0670.4
3 X643S238
FOLDING SUN-
ROOF SWITCH
X6434
.35 GR/RT
X495

.35 GE/GR
X18337







11S82y
FOG LIGHT SWITCH
0) OFF
1) FRONT FOG
LIGHTS ON 2 X18338

6312.0 HEADLIGHTS/FOG LIGHTS
 

F225A
4 X10017
P90
FRONT POWER
DISTRIBUTION BOX
11S8
LIGHT SWITCH
0) OFF
1) PARK LIGHTS ON
2) HEADLIGHTS ON 2 X18337
.35 GE/VI
2 1 0
F235A
2 X18334
1
X18334
X173
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
GROUND
DISTRIBUTION
0670.4E98
FOG LIGHT
SWITCH
ILLUMINATION
X18338
6312.0-01
6
1 0
6312.0-03

X1001610
1 GE/BR






HEADLIGHTS/FOG LIGHTS
F255A
6312.0-026312.0-02FUSE DETAILS
0670.3
F235A
0 1 2 6
10
4
10
.35 GE
X1029
FUSE DETAILS
0670.3
.35 WS





X18337
X18337
8
2
4X44
E26
LEFT FOG LIGHT6X44
8 .35 GE/GR
30 86
E27
RIGHT FOG LIGHT
GROUND
DISTRIBUTION
0670.4 POWER
DISTRIBUTION
0670.2
X768
1
P90
FRONT POWER
DISTRIBUTION BOX F15
15A
1 RT/GE
X7682
X769
1X769
287
X165
X173
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
X100169
3 X17
1 GE/BR.75 GE/BR
A2w
INSTRUMENT
CLUSTER X1152
1 GE/BR85
P90
FRONT POWER
DISTRIBUTION BOX
K47
FRONT FOG LIGHT
RELAY
X2
X10017
S8
LIGHT SWITCH
0) OFF
1) PARK LIGHTS
ON
2) HEADLIGHTS
ON
X17
6312.0-00
 

.35 GE
6312.0-02
.35 GE6312.0-02
.35 RT/WS
USA
1
X173
GROUND
DISTRIBUTION
0670.4 3 X17
.35 WS
A2w
INSTRUMENT
CLUSTERX16
X1028
.35 WS
X0
POWER
DISTRIBUTION
0670.210 RT
9 7 8
X329
X32
5
.5 GE
S7
COMBINATION
SWITCH
7) NORMAL
8) FLASH
9) HIGH BEAM .75 GN/GE4
.5 WS
.35 GE

X0
E13
LEFT LOW BEAM
LIGHT
X10262







HEADLIGHTS/FOG LIGHTS
181 X10036
P90
FRONT POWER
DISTRIBUTION BOX 56a
6POWER
DISTRIBUTION
0670.28 X45
.35 GE
87
2 X454
2.5 WS/BL
6
4
2 .35 WS
POWER
DISTRIBUTION
0670.2
8
K48
LOW BEAM LIGHT
RELAYK46
HIGH BEAM LIGHT
RELAY
85 30 86
8730
1 X1003556a
X10017
20
2.5 RT/WS
2P90
FRONT POWER
DISTRIBUTION BOX 56b56b
X100164
2 X10070
X165
1 X10070
X173
GROUND
DISTRIBUTION
0670.4
X2X2
.35 BR
1 GE/BL
P90
FRONT POWER
DISTRIBUTION BOX P90
FRONT POWER
DISTRIBUTION BOX
F11
7.5AF127.5AF29
7.5AF307.5A
E14
RIGHT LOW BEAM
LIGHT 2 X10075
1 X10075
GROUND
DISTRIBUTION
0670.4E7
LEFT HEADLIGHTE8
RIGHT HEADLIGHT
X165
E11
LEFT HIGH BEAM
LIGHT 2 X10071
1 X10071
E12
RIGHT HIGH BEAM
LIGHT2 X10074
1 X10074
GROUND
DISTRIBUTION
0670.4E7
LEFT HEADLIGHTE8
RIGHT HEADLIGHT
POWER
DISTRIBUTION
0670.2
6312.0-01
POWER
DISTRIBUTION
0670.2
.35 BR
1 WS/GN 1 WS/BL 6312.0-01
 

GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
1 GE/GN
F255A
5FUSE DETAILS
0670.3P90
FRONT POWER
DISTRIBUTION BOX
1
.35 GE
10 X10017
6312.0-01
6312.0-01
.35 RT/WS
USA
86
85 NOT USED
NOT USED
X102627
87b
10 RT10 RT