1999 BMW 318ti fuel





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





Pin Assignments


 

E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
25
Not used
26Not used
X271
Pin Type Description/Function Connection
1
AFuel level sensorFuel tank sensors
2Not used
3AGround supply for fuel tank sensors and
vehicle speed sensorFuel tank sensors and vehicle speed
sensor
4EPosition signal TWVehicle speed sensor
5Not used
6Not used
7Not used
8Not used
9Not used
10Not used
11Not used
12Not used







INDICATORS
INSTRUMENT CLUSTER
.5 SW/WS
F235A
P90
FRONT POWER
DISTRIBUTION BOX F46
15A
F315A

A2w
INSTRUMENT
CLUSTER
1) FUEL
CONSUMPTION
2) VEHICLE
SPEED
OUTPUT
11) FUEL GAUGE
14) SPEEDOMETER
31
31 4
16X1622
30
31
X173X2714
B10
VEHICLE SPEED
SENSOR
6211.0-03
X383
2
X3831
X172
31 312
14 1
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
GROUND
DISTRIBUTION
0670.4OUTPUT–SIGNAL
SPEEDOMETER
X6792
X12412
13
B25y
FUEL TANK
SENSOR II
B6
FUEL LEVEL
SENSOR
X10018232X100176
X17
X6791 .5 BR/GE
.5 GE
.5 BR/SWX1241
1.5 BR/SW .5 BR/RT
.5 BR/SW
X805
X173
11
01/2
1/1FUSE DETAILS
0670.3
 

.5 BR/GE
X11291ON–BOARD
COMPUTER (BC IV)
6581.0.5 BR/GE
23
X1413
.5 BR/GR/GE
X443
N12w
ANTI–THEFT
CONTROL
MODULE (ALPINE)
X130254
A104
BODY
ELECTRONICS
CONTROL
MODULE (ZKE IV)X132542 12
X3522
GROUND
DISTRIBUTION
0670.4
X13006
X3521S14
DRIVER’S DOOR
JAMB SWITCH
1) DOOR OPEN
2) DOOR CLOSED
.5 BR/GR/GE
.5 BR/GR/GE .5 BR/GR/GE .5 BR/GR/GE

6581.3 BOARD COMPUTER (BC – LOW)





B21
ON–BOARD
COMPUTER
TEMPERATURE
SENSOR
31 30
31 31 31
.35 BR/GR
P90
FRONT POWER
DISTRIBUTION BOX
232 X10018
FUSE DETAILS
0670.3
510
911
LIGHT SWITCH
DETAILS
6300.0
X10245
86 X10245
X10010
1 X770
2 X770
GROUND
DISTRIBUTION
0670.4
X10010GROUND
DISTRIBUTION
0670.4
58g
FUSE DETAILS
0670.3
 

.35 WS/VI2.35 WS/GE3
B25y
FUEL TANK
SENSOR II .5 BR/GE7
2 X679
1 X679
15
.5 SW/WS2
X188
INSTRUMENT
CLUSTER
6211.0
X11291
1 X13
B6
FUEL LEVEL
SENSOR 2 X1241
1 X1241
.5 GE15
31
3 X271
.5 BR/SW
.5 BR/GE
1 X271
15
.35 BR/RT1
10 X32
1 X32
X173
GROUND
DISTRIBUTION
0670.4
A2w
INSTRUMENT
CLUSTER
2) VEHICLE
SPEED
OUTPUT 2
X17
.35 SW/WS
.35 GR/RT
A35y
BOARD
COMPUTER
(BC – LOW)
S7
COMBINATION
SWITCH
10) PROGRAM MO-
DUS 10TXD RXD
DATA LINK
0670.5.5 BR/GE
.5 BR/GE
A2w
INSTRUMENT
CLUSTER
.5 BR/SW.5 BR/SW
X805
INSTRUMENT
CLUSTER
6211.0
31415
.5 WS/SWA6000
ENGINE CONTROL
MODULE (DME)
X6000
24X20
.35 WS/SW
31
F315AF4615A
83
.35 BR/RT
.35 BR




COMPONENT LOCATION CHART






 

COMP.8500.0 7100.0LOCATION DESCRIPTION

A8500
TRANSMISSION CONTROL MODULE
(EGS) . . . . . . . . . . . . . . . . . . . . . . . . . . .
rear RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0



B1 . . . .
RIGHT FRONT SPEED SENSOR –
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
on RH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0



B2 . . . .
LEFT FRONT SPEED SENSOR – ABS
on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0

B3 . . . . RIGHT REAR SPEED SENSOR – ABS on RH rear wheel, above brake caliper
B4 . . . . LEFT REAR SPEED SENSOR – ABS . on LH rear wheel, above brake caliper
B6 . . . . FUEL LEVEL SENSOR . . . . . . . . . . . . . . below LH side of rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

B8y . . .

PRESSURE SWITCH . . . . . . . . . . . . . . . .

near RH headlight assembly




B9 . . . . INTERMEDIATE PRESSURE SWITCH near RH headlight assembly
B10 . . VEHICLE SPEED SENSOR . . . . . . . . . . on differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0

B14 . .
EVAPORATOR TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . .
RH side of LH footwell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0



B16 . .
LEFT FRONT BRAKE PAD SENSOR . .
on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0

B17 . . RIGHT REAR BRAKE PAD SENSOR . . behind RH rear wheel
B18 . . BRAKE FLUID LEVEL SWITCH . . . . . . . rear LH side of engine compartment top of brake fluid reservoir . . . . . . . . . 0


B21 . .
ON–BOARD COMPUTER
TEMPERATURE SENSOR . . . . . . . . .
in the engine compartment lower LH side of engine compartment . . . . . . .

0



B25y .
FUEL TANK SENSOR II . . . . . . . . . . . . .
below RH side of rear seat



B72 . . FUEL TANK PRESSURE SENSOR . . . RH rear wheel well, behind trim panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
B78 . . DRIVER’S SIDE IMPACT SENSOR . . . LH B–pillar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0




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
X91009 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . under passenger’s seat

Y1 . . . .

ABS HYDRAULIC UNIT . . . . . . . . . . . . . .

rear LH side of engine compartment back of LH side shock tower . . . . . . .

0


Y2 . . . . AIR CONDITIONING COMPRESSOR . front RH side of engine compartment
Y4z . . . WATER VALVE . . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Y5 . . . .
DRIVER’S SIDE MIRROR . . . . . . . . . . . .
in upper LH front door



Y6 . . . .

PASSENGER’S SIDE MIRROR . . . . . . .

in upper RH front door




Y19 . . SHIFT–LOCK . . . . . . . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
Y199 . CARBON CANISTER VALVE . . . . . . . . . behind side panel, right from RH rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0

Y6101
CYL. 1 FUEL INJECTION VALVE . . . . .
on cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0


Y6102 CYL. 2 FUEL INJECTION VALVE . . . . . on cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Y6103 CYL. 3 FUEL INJECTION VALVE . . . . . on cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Y6104 CYL. 4 FUEL INJECTION VALVE . . . . . on cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0


Y6120

EVAPORATIVE EMISSION VALVE . . . .

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

0


Y6130 IDLE SPEED CONTROL VALVE . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0



Y6131

INTAKE AIR RESONANCE CHANGE-
OVER VALVE . . . . . . . . . . . . . . . . . . . . .
rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


Y6133 AIR PUMP . . . . . . . . . . . . . . . . . . . . . . . . . LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0


Y6163

SECONDARY AIR PUMP VALVE . . . . .

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

0


Y6263 FUEL CHANGEOVER VALVE . . . . . . . . under LH center of car . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0

Y8505y TRANSMISSION VALVE UNIT . . . . . . . . on RH side of transmission




K6300
ENGINE CONTROL
MODULE RELAY
K6301w
FUEL PUMP RELAY K2
HORN RELAY
K4
BLOWER RELAYK47
FRONT FOG LIGHT
RELAY
K16
HAZARD FLASHER
RELAYK48
LOW BEAM LIGHT
RELAYK21
NORMAL SPEED
RELAY K13
REAR DEFOGGER
RELAYK22
HIGH SPEED
RELAY
K19
COMPRESSOR
CONTROL RELAYK125
ABS PUMP MOTOR
RELAY, TIMED

COMPONENT LOCATION VIEWS









 



K6304
SECONDARY AIR
PUMP RELAY