key 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
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




COMPONENT LOCATION CHART






 

COMP.8500.0 7100.0LOCATION DESCRIPTION
S30 . . BRAKE LIGHT SWITCH . . . . . . . . . . . . . LH footwell on clutch pedal support bracket behind LH footwell trim . . . . . 0

S31 . .

PARK BRAKE SWITCH . . . . . . . . . . . . . .

center console on rear of park brake lever . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


S32 . . CLUTCH SWITCH . . . . . . . . . . . . . . . . . . LH footwell underside of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
S36y . DOUBLE TEMPERATURE SWITCH . . . front RH side of engine compartment near RH headlight assembly . . . . . . 0

S37 . .
GLOVE BOX LIGHT SWITCH . . . . . . . .
in glove box



S38 . .

TILT/SLIDE SUNROOF SWITCH (SHD)

in roof panel




S47 . . DRIVER’S DOOR LOCK SWITCH . . . . . LH front door in door at key lock assembly
S49 . . PASSENGER’S DOOR LOCK SWITCH RH front door in door at key lock assembly

S51 . .
DRIVER’S SEAT, SEAT CONTROL
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
under driver’s seat







S53 . .



DRIVER’S SEAT, SEAT HEATER
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .


center console








S54 . .

PASSENGER’S SEAT, SEAT HEATER
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0



S56 . .

PASSENGER’S SEAT, SEAT CONTROL
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
under passenger’s seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


S58 . . DRIVER’S SEAT BELT SWITCH . . . . . . in LH front seat belt buckle
S59 . . PASSENGER’S SEAT BELT SWITCH . in RH front seat belt buckle

S61y .
LUGGAGE COMPARTMENT LIGHT
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
underside of luggage compartment lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



0



S75 . .
BLOWER SWITCH . . . . . . . . . . . . . . . . . .
center of dash





S77 . .

DRIVER’S MAKE–UP MIRROR
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
above LH sun visor in sun visor bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0




COMPONENT LOCATION CHART






 

COMP.8500.0 7100.0LOCATION DESCRIPTION
X741 . (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . under RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0 0
X742 .

(2 PINS, YELLOW) . . . . . . . . . . . . . . . . . .

RH front door in door at key lock assembly




X744 . (4 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . . RH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
0
X745 . (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . right footwell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

X746 .
(3 PINS, NATURAL) . . . . . . . . . . . . . . . . .
RH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0
X747 .

(2 PINS, YELLOW) . . . . . . . . . . . . . . . . . .

LH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0


X748 . (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . LH footwell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0 0
X749 . (4 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . . LH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0 0

X753 .
(3 PINS, NATURAL) . . . . . . . . . . . . . . . . .
LH front door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0
X768 . (2 PINS, WHITE) . . . . . . . . . . . . . . . . . . . . in the engine compartment near LH headlight assembly . . . . . . . . . . . . . . . . 0

X769 . (2 PINS, WHITE) . . . . . . . . . . . . . . . . . . . . in the engine compartment near RH headlight assembly . . . . . . . . . . . . . . . 0

X770 . (2 PINS, YELLOW) . . . . . . . . . . . . . . . . . . in the engine compartment near LH headlight assembly . . . . . . . . . . . . . . . . 0

X771 .

(2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .

RH side of LH footwell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0


X778 . (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . in LH front seat belt buckle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
X782 . (3 PINS, ORANGE) . . . . . . . . . . . . . . . . . LH side of glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 0

X783 .
(3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .
underside of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


0
X816 . (1 PIN, –––) . . . . . . . . . . . . . . . . . . . . . . . . rear of engine compartment behind RH fresh air cowl
X817 . (1 PIN, –––) . . . . . . . . . . . . . . . . . . . . . . . . rear of engine compartment behind RH fresh air cowl
X861 . GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

X904 .

(4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .

behind center of dashboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0

0
X905 . (7 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . behind center of dashboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0