ignition BMW 318ti 1999 E36 Electrical Troubleshooting Manual





Pin Assignments


 

E = Input, A = Output, M = Ground
X17
Pin Type Description/Function Connection
1
ETrailer turn signal indicator controlHazard flasher relay
2AVehicle speed signalVarious control modules
3MGround supply, terminal 31 for indicator and
warning lampsGround point
4EVoltage supply, terminal 15 for instrument
cluster electronicsFront power distribution box, fuse 23
5EVoltage supply, terminal 15 for battery
charge indicatorIgnition switch, terminal 15
6EGround supply, terminal 61 for battery
charge indicatorGenerator
7Not used
8EFog light indicator controlFront power distribution box, fuse 15
9ASound tone signalChime module
10Not used
11Not used
12EASC signalASC control module
13ATI-measurement signal (fuel consumption)Engine control module (DME)
14ESeat belt warning lamp controlDriver’s seat belt switch
15ESIA reset/service interval indicator resetData link connector
16EVoltage supply, terminal RFront power distibution box, fuse 46
17ACoolant temperature sensor (–)Coolant temperature sensor
18ECoolant temperature sensor (+)Coolant temperature sensor
19EOil pressure warning lamp controlOil pressure switch
20Not used
21EABS warning lamp (ABS)ABS control module/hydraulic unit/slip
control module (ABS/ASC)
22EIgnition key warning/audible ignition key
warningIgnition switch
23EDriver’s door openDriver’s door jamb switch
24Not used





INSTRUMENT CLUSTER
INDICATORS
2
5
X4231
S31
PARK BRAKE
SWITCH
1) BRAKE SET
2) BRAKE NOT
SET 2 1
17
.5 BR/GN
X1111
B18
BRAKE FLUID
LEVEL SWITCH
1) LOW LEVEL
2) NORMAL LEVEL P90
FRONT POWER
DISTRIBUTION BOX
310
X203
7 2.5 GN15
F275A

A2w
INSTRUMENT
CLUSTER
10) AIR BAG 23
6
.5 BL
18
.35 BR/VI
X1614
.5 BL/SW
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
31
POWER
DISTRIBUTION
0670.2
7 10
A52
SLIP CONTROL
MODULE
(ABS/ASC) 40
X1170
CHARGING
SYSTEM
1230.0
2.5 GN
.5 GN
X1112
X173
GROUND
DISTRIBUTION
0670.4
14 X10017
X16X17
X74
1
X209
2 1
FUSE DETAILS
0670.3
!

.5 GR/SW/GE
X1426
.5 BL/SW
 

21 X16
S58
DRIVER’S SEAT
BELT SWITCH 2X778
.5 BL/VI/GE
14
15X13
.5 BL/VI/GE
S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
42
.5 BL/BR
12X17
X33

PARK
BRAKE







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









6410.7 HEATING CONTROL (HS)
P90
FRONT POWER
DISTRIBUTION BOX
15S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
7 X33
1 X209
2.5 GN
2.5 GN
X203
.35 GN
8POWER
DISTRIBUTION
0670.2
6
30
87 85 86
4X58
2
GROUND
DISTRIBUTION
0670.42.5 GN/BR
X35
2
X58
K4
BLOWER RELAY
X173
2.5 GN/BR
F2030A
X10016
20
FUSE DETAILS
0670.3
 

10
2 3




K4
BLOWER RELAY
F2030A F397.5A
5B9
INTERMEDIATE
PRESSURE
SWITCHS36y
DOUBLE
TEMPERATURE
SWITCHK21
NORMAL SPEED
RELAY
B8y
PRESSURE
SWITCH A6000
ENGINE CONTROL
MODULE (DME)
B9508
PRESSURE
SWITCH
X11250
A107
INTEGRATED
HEATING– AND
CLIMATE CONTROL
MODULE
.0
F235AF165A
S2
IGNITION SWITCH
M30
BLOWER MOTOR R11
BLOWER
RESISTORS K19
COMPRESSOR
CONTROL RELAY
Y2
AIR CONDITIONING
COMPRESSORA8500
TRANSMISSION
CONTROL MODULE
(EGS)
A6000
ENGINE CONTROL
MODULE (DME)
Y4z
WATER VALVE
S531
TEMPERATURE
WHEEL SWITCHM111
FRESH AIR
RECIRCULATION
MOTOR4X13274
S530
IHKS CONTROL
SWITCHF16
5AF4840A
K22
HIGH SPEED
RELAY
E103
CLIMATE CONTROL
SWITCH
ILLUMINATION 58g
LIGHT SWITCH
DETAILS
6300.0P97
AUXILIARY FUSE
BOX
6450.6-00
6450.6-00
6450.6-006450.6-00
6450.6-01
6450.6-016450.6-016450.6-026450.6-02
6450.6-026450.6-02
6450.6-01
6450.6-006450.6-03
6450.6-03
6450.6-03 6450.6-03
6450.6-03P90
FRONT POWER
DISTRIBUTION BOX
M9
AUXILIARY FAN
MOTOR 6450.6-03
F165A
P90
FRONT POWER
DISTRIBUTION BOXP90
FRONT POWER
DISTRIBUTION BOX
B14
EVAPORATOR
TEMPERATURE
SENSOR
6
6450.6-012S75
BLOWER SWITCH 6450.6-00
6
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-01
41
107
K13
REAR DEFOGGER
RELAY 6450.6-01
3
X11250
9 X132741 8
A6000
ENGINE CONTROL
MODULE (DME) 6450.6-03
6450.6-01
6450.6-03
6450.6 INTEGRATED HEATING– AND CLIMATE CONTROL

F2030A


POWER, AIR FLOW CONTROL





INTEGRATED HEATING– AND CLIMATE CONTROL
X1001620
8 2.5 GNP90
FRONT POWER
DISTRIBUTION BOX
POWER
DISTRIBUTION
0670.2
X203
X582 4
2 1 7X905
X8171 6 X58
1 X816
4 3 2 1 X904
X352 7 X33
4X905
 

X173X10012
S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
1 X209
2.5 GN
.35 GN
86
8530
87FUSE DETAILS
0670.3
K4
BLOWER RELAY
2.5 GN/BR
2.5 GN/BR
2.5 GN/GR
2.5 GN/
GR 2.5 BL 2.5 GN 1.5 SW2.5 GN/GR
M30
BLOWER MOTOR
GROUND
DISTRIBUTION
0670.4 GROUND
DISTRIBUTION
0670.4R11
BLOWER
RESISTORS
1) OPENS IF
RESISTORS
OVERHEAT



S75
BLOWER SWITCH
0) OFF
1) SLOW
2) MEDIUM
3) FAST
4) MAXIMUM
1
6
2
X10012
3
X906
1 LIGHT SWITCH
DETAILS
6300.0
X1522X1522
.5 GN/RT
GROUND
DISTRIBUTION
0670.4E103
CLIMATE CONTROL
SWITCH ILLUMINATION .5 GR/RT
1 GN/GR 58g
2
10
3
2 1 0
34




COMPONENT LOCATION CHART






 

COMP.8500.0 7100.0LOCATION DESCRIPTION
K6300 ENGINE CONTROL MODULE RELAY . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . 
0

K6301w

FUEL PUMP RELAY . . . . . . . . . . . . . . . .

rear LH side of engine compartment in Power Distribution Box . . . . . . . . . .


0


K6304 SECONDARY AIR PUMP RELAY . . . . . rear LH side of engine compartment in Power Distribution Box . . . . . . . . . . 
0
K6326 UNLOADER RELAY, TERMINAL 15 . . . rear RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0

L1 . . . .
EWS TOROIDAL COIL . . . . . . . . . . . . . .
at ignition switch



M2 . . .

FUEL PUMP . . . . . . . . . . . . . . . . . . . . . . . .

below RH side of rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


M3 . . . WIPER MOTOR . . . . . . . . . . . . . . . . . . . . rear of engine compartment below center of cowl . . . . . . . . . . . . . . . . . . . . . 0
M4 . . . WASHER PUMP . . . . . . . . . . . . . . . . . . . . front RH side of engine compartment on washer fluid reservoir . . . . . . . . . . 0

M7 . . .
HEADLIGHT/FOG LIGHT WASHER
PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . .
front RH side of engine compartment on washer fluid reservoir . . . . . . . . . .

0



M9 . . .

AUXILIARY FAN MOTOR . . . . . . . . . . . .

behind front grille behind trim panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


M12 . . DRIVER’S DOOR LOCK MOTOR . . . . . in lower LH front door behind trim panel
M13 . . PASSENGER’S DOOR LOCK MOTOR in lower RH side of front door behind trim panel

M16 . .
GAS FILLER LOCK MOTOR . . . . . . . . .
in RH rear side of luggage compartment behind trim panel . . . . . . . . . . . . .

0



M17 . .

LUGGAGE COMPARTMENT LOCK
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . .
rear side of luggage compartment behind trim panel . . . . . . . . . . . . . . . . . . .

0

M21 . . DRIVER’S WINDOW MOTOR . . . . . . . . LH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0
M23 . . PASSENGER’S WINDOW MOTOR . . . . RH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0

M24z . FOLDING SUNROOF MOTOR . . . . . . . . in roof panel



M25 . .



CRUISE CONTROL ACTUATOR
(TEMPOMAT) . . . . . . . . . . . . . . . . . . . . .


front LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0



M30 . . BLOWER MOTOR . . . . . . . . . . . . . . . . . . rear of engine compartment behind RH fresh air cowl




COMPONENT LOCATION CHART







 

COMP.8500.0 7100.0LOCATION DESCRIPTION
P90 . . FRONT POWER DISTRIBUTION BOX rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0


P95 . .

AUXILIARY FUSE BOX . . . . . . . . . . . . . .

below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0


P97 . . AUXILIARY FUSE BOX . . . . . . . . . . . . . . below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
R11 . . BLOWER RESISTORS . . . . . . . . . . . . . . behind center of dashboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0


R6252
THROTTLE POSITION SENSOR . . . . .
LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0


R6255z

THROTTLE POSITION SENSOR (ASC)

LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0


S2 . . . . IGNITION SWITCH . . . . . . . . . . . . . . . . . . LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0


S3 . . . .

AUTOMATIC TRANSMISSION RANGE
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


S4 . . . . HORN SWITCH . . . . . . . . . . . . . . . . . . . . . on steering wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

S5 . . . .

WIPER/WASHER SWITCH . . . . . . . . . . .

LH side of dash RH side of steering column above




S6 . . . . ASC SWITCH . . . . . . . . . . . . . . . . . . . . . . center console
S7 . . . . COMBINATION SWITCH . . . . . . . . . . . . . LH side of dash LH side of steering column above . . . . . . . . . . . . . . . . . . . . 0

S8 . . . .
LIGHT SWITCH . . . . . . . . . . . . . . . . . . . . .
LH side of dash



S13 . . PASSENGER’S DOOR JAMB SWITCH RH front door jamb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
S14 . . DRIVER’S DOOR JAMB SWITCH . . . . . front LH door pillar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
S17 . . MIRROR CONTROL SWITCH . . . . . . . . in upper LH front door

S18 . .

HAZARD SWITCH . . . . . . . . . . . . . . . . . .

below front of console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


S21w . ENGINE HOOD SWITCH . . . . . . . . . . . . front RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
S28 . . CRUISE CONTROL SWITCH . . . . . . . . . LH side of dash RH side of steering column above . . . . . . . . . . . . . . . . . . . . 0

S29 . .
BRAKE LIGHT SWITCH . . . . . . . . . . . . .
LH footwell on brake pedal support bracket behind LH footwell trim . . . . . .
0




COMPONENT LOCATION CHART






 

COMP.8500.0 7100.0LOCATION DESCRIPTION

S78 . .
PASSENGER’S MAKE–UP MIRROR
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
above RH sun visor in sun visor bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


S82y . FOG LIGHT SWITCH . . . . . . . . . . . . . . . . on instrument cluster

S126y

DRIVER’S POWER WINDOW SWITCH

center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0




S127y

PASSENGER’S POWER WINDOW
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


S198 . JET HEATER THERMOSWITCH . . . . . . front LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0

S218 . REAR DEFOGGER SWITCH . . . . . . . . . center console

S235 .

STARTER IMMOBILIZATION SWITCH .

LH footwell underside of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0


S238 . FOLDING SUNROOF SWITCH . . . . . . . in roof panel
S302 . CENTRAL LOCKING SWITCH . . . . . . . . center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0


S530 .
IHKS CONTROL SWITCH . . . . . . . . . . . .
center of dash



S531 . TEMPERATURE WHEEL SWITCH . . . . center of dash
S8503 PROGRAM SWITCH . . . . . . . . . . . . . . . . center console
S8507 KICK–DOWN SWITCH . . . . . . . . . . . . . . LH footwell

S8511
REVERSING LIGHT SWITCH . . . . . . . .
under front of car LH side of transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0

T6151 CYL. 1 IGNITION COIL . . . . . . . . . . . . . . RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
T6152 CYL. 2 IGNITION COIL . . . . . . . . . . . . . . RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
T6153 CYL. 3 IGNITION COIL . . . . . . . . . . . . . . RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

T6154

CYL. 4 IGNITION COIL . . . . . . . . . . . . . .

RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


X0 . . . . B+ JUNCTION POINT . . . . . . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

B6231
OIL PRESSURE
SWITCH
X6231




COMPONENT LOCATION VIEWS











 

B6209
HALL EFFECT CAM-
SHAFT SENSOR
R6252
THROTTLE
POSITION SENSORX6130
X6252
Y6130
IDLE SPEED
CONTROL VALVE

T6152
CYL. 2 IGNITION
COIL
T6153
CYL. 3 IGNITION
COIL T6151
CYL. 1 IGNITION
COILT6154
CYL. 4 IGNITION
COIL
X6150