brake BMW 318ti 1998 E36 Electrical Troubleshooting Manual




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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) 40X1170
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/GEX1426
.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
16X11394A202
ABS CONTROL
MODULE/HY-
DRAULIC UNIT WITH ASC WITH ABSX33
.35 GR/SW/GE
PARK
BRAKE


INSTRUMENT CLUSTER
INDICATORS
GROUND
DISTRIBUTION
0670.4



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3
GROUND
DISTRIBUTION
0670.4A2w
INSTRUMENT
CLUSTER
HEADLIGHTS/FOG
LIGHTS
6312.0TURN/HAZARD
LIGHTS
6313.0LIGHT SWITCH
DETAILS
6300.0
.75 GE/BR
X178.35 WS1
.5 BL/GN
4
.5 BL/BR
X163
.5 WS/RT
X171
.5 GR/RT
X162
519 X16
.5 GR/BR
A8500
TRANSMISSION
CONTROL MODULE
(EGS)2 X713
X1322 .5 GE
X850025
2X118
1X118
1 X713
X13006
.5 GE
B16
LEFT FRONT
BRAKE PAD
SENSOR
.5 GE
B17
RIGHT REAR
BRAKE PAD
SENSOR
.5 GR/BR31
!
X173
14 X10017
23
F275AP90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3
X69
 

X17
25







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6325.0 BRAKE LIGHTS
21
X181
X10018
F4615A
FUSE DETAILS
0670.3
A8
CRUISE CONTROL
MODULE
(TEMPOMAT) X22
15 2P90
FRONT POWER
DISTRIBUTION BOX
32
1
1.5 BL/RT1 BL/RT S29
BRAKE LIGHT
SWITCH
1) NORMAL STATE
2) BRAKE PEDAL
DEPRESSED
GROUND
DISTRIBUTION
0670.4 X318
2
X318
E47
RIGHT LUGGAGE
COMPARTMENT
LIGHT ASSEMBLY X3193
X319
5E46
LEFT LUGGAGE
COMPARTMENT
LIGHT ASSEMBLY
8
1.5 BR H24
LEFT BRAKE LIGHTH31
RIGHT BRAKE
LIGHT
1.5 BR
H34
HIGH LEVEL STOP
LIGHT X413
2 X116
X116
6 X13
1 BL/RT 1.5 BL/RT
.5 BR
X4131
X11268
1 BL/RT
 

.35 BL/RT
A8500
TRANSMISSION
CONTROL MODULE
(EGS) X8500
10
X6912
X13006
.5 BL/RT .75 BL/RT
12X10018
F4615A
FUSE DETAILS
0670.3
2P90
FRONT POWER
DISTRIBUTION BOX
32
1
1.5 BL/RT
X78
S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
3) BRAKE PEDAL
DEPRESSED
(TEST)
4) BRAKE PEDAL
RELEASED
(NORMAL)
WITH EGS WITHOUT EGS
A202
ABS CONTROL
MODULE/HY-
DRAULIC UNIT X11394
18 .35 BL/RT
A52
SLIP CONTROL
MODULE
(ABS/ASC) X1170
17 .75 BL/RT
WITH ABS WITH ASC
43
4 3 X78
GROUND
DISTRIBUTION
0670.4
X173
.5 BR/GR
11 X69
.5 BR/GR
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
48 X8500
1.5 BL/RT
.75 BL/RT

X78WITH EGS




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6571.0 CRUISE CONTROL (TEMPOMAT)
FUSE DETAILS
0670.3 X10017
16
5 X511
P90
FRONT POWER
DISTRIBUTION BOX F28
5A
ELECTRONIC
TRANSMISSION
CONTROL
(EGS A4S 270R)
2460.2
.5 BR/SW
F4615A
X10018
32
.5 VI/GE X511
7
 " 1 

'
 
 +
 1 
" 
 
5S3
AUTOMATIC
TRANSMISSION
RANGE SWITCH
0) OFF (LOW)
1) ON (HIGH)
3126
31
X191
.35 BR/SW1 X72
S28
CRUISE CONTROL
SWITCH
0) NORMAL
1) OFF
2) RESUME
3) DECELERATE/SET
4) ACCELERATE/SET
24
31
3
18
312
9
314 X72
20
X22
31
A8
CRUISE CONTROL
MODULE
(TEMPOMAT) .35 BL/WS .35 BL/GN .35 BL/GR.5 VI/GE
.35 BL/SW FUSE DETAILS
0670.3
468
5 EGS A4S 270R
 

1
1 2
2
15S29
BRAKE LIGHT SWITCH
1) NORMAL STATE
2) BRAKE PEDAL
DEPRESSED
BRAKE LIGHTS
6325.0
X116
X116
.35 BL/RT 1.5 BL/RT1.5 VI/GE
X181
L1L2L3L4
01010101
4 3
01 2
01 2
0
31
20
8X16
.35 SW.5 SW
X1047
31A2w
INSTRUMENT
CLUSTER
TD
ENGINE CONTROL
SYSTEM (DME M5.2,
4–CYLINDER M44)
1210.20
X78
S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
WITHOUT EGS




COMPONENT LOCATION CHART
:





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COMP.8500.0 7100.0LOCATION DESCRIPTION

A836 .
ELECTRONIC IMMOBILIZER
CONTROL MODULE (EWS II) . . . . . .
under glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

01-2


A6000 ENGINE CONTROL MODULE (DME) . . rear RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-1



A8500



TRANSMISSION CONTROL MODULE
(EGS) . . . . . . . . . . . . . . . . . . . . . . . . . . .


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


00-1





B1 . . . .

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

06-3


B2 . . . . LEFT FRONT SPEED SENSOR – ABS on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 06-3
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13-1


B8y . . . PRESSURE SWITCH . . . . . . . . . . . . . . . . near RH headlight assembly
B9 . . . . INTERMEDIATE PRESSURE SWITCH near RH headlight assembly

B10 . .
VEHICLE SPEED SENSOR . . . . . . . . . .
on differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26-1



B14 . .

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

17-1


B16 . . LEFT FRONT BRAKE PAD SENSOR . . on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 06-3
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 . . . . . . . . .
09-2



B21 . .

ON–BOARD COMPUTER
TEMPERATURE SENSOR . . . . . . . . .
in the engine compartment lower LH side of engine compartment . . . . . . .
14-1

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




COMPONENT LOCATION CHART
:





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COMP.8500.0 7100.0LOCATION DESCRIPTION
H24 . . LEFT BRAKE LIGHT . . . . . . . . . . . . . . . . LEFT LUGGAGE COMPARTMENT LIGHT ASSEMBLY

H25 . .

LEFT TAIL LIGHT . . . . . . . . . . . . . . . . . . .

LEFT LUGGAGE COMPARTMENT LIGHT ASSEMBLY




H27 . . LEFT BACK UP LIGHT . . . . . . . . . . . . . . LEFT LUGGAGE COMPARTMENT LIGHT ASSEMBLY
H28 . . RIGHT BACK UP LIGHT . . . . . . . . . . . . . RIGHT LUGGAGE COMPARTMENT LIGHT ASSEMBLY

H30 . .
RIGHT TAIL LIGHT . . . . . . . . . . . . . . . . . .
RIGHT LUGGAGE COMPARTMENT LIGHT ASSEMBLY



H31 . .

RIGHT BRAKE LIGHT . . . . . . . . . . . . . . .

RIGHT LUGGAGE COMPARTMENT LIGHT ASSEMBLY




H34 . . HIGH LEVEL STOP LIGHT . . . . . . . . . . . at back of rear window shelf
H37 . . LEFT TAIL LIGHT . . . . . . . . . . . . . . . . . . . LEFT LUGGAGE COMPARTMENT LIGHT ASSEMBLY

H39 . .
RIGHT TAIL LIGHT . . . . . . . . . . . . . . . . . .
RIGHT LUGGAGE COMPARTMENT LIGHT ASSEMBLY



H42 . . LEFT MID–HIGH RANGE SPEAKER . . in upper LH front door
H43 . . RIGHT MID–HIGH RANGE SPEAKER . in upper RH front door
H45 . . RIGHT REAR SPEAKER . . . . . . . . . . . . . in RH side of luggage compartment

H46 . .

LEFT REAR SPEAKER . . . . . . . . . . . . . .

in LH side of luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23-2




H50 . .

RIGHT FRONT HIGH RANGE
SPEAKER . . . . . . . . . . . . . . . . . . . . . . . .
in upper RH front door






H51 . .

RIGHT FRONT LOW RANGE
SPEAKER . . . . . . . . . . . . . . . . . . . . . . . .
in lower RH A–pillar




H52 . . RIGHT REAR LOW RANGE SPEAKER under rear window shelf
H53 . . RIGHT REAR HIGH RANGE SPEAKER under rear window shelf

H54 . .

RIGHT FRONT MIDRANGE SPEAKER

in upper RH front door




H55 . . LEFT FRONT MIDRANGE SPEAKER . in upper LH front door




COMPONENT LOCATION CHART
:





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COMP.8500.0 7100.0LOCATION DESCRIPTION
S28 . . CRUISE CONTROL SWITCH . . . . . . . . . LH side of dash RH side of steering column above . . . . . . . . . . . . . . . . . . . . 16-3

S29 . .

BRAKE LIGHT SWITCH . . . . . . . . . . . . .

LH footwell on brake pedal support bracket behind LH footwell trim . . . . . .

15-3


S30 . . BRAKE LIGHT SWITCH . . . . . . . . . . . . . LH footwell on clutch pedal support bracket behind LH footwell trim . . . . . 15-3
S31 . . PARK BRAKE SWITCH . . . . . . . . . . . . . . center console on rear of park brake lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-2

S32 . .
CLUTCH SWITCH . . . . . . . . . . . . . . . . . .
LH footwell underside of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15-3

S36y .

DOUBLE TEMPERATURE SWITCH . . .

front RH side of engine compartment near RH headlight assembly . . . . . .

08-3


S37 . . GLOVE BOX LIGHT SWITCH . . . . . . . . in glove box
S38z . TILT/SLIDE SUNROOF SWITCH (SHD) in roof panel

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



S48 . . DRIVER’S DOOR HANDLE SWITCH . . in driver’s door
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30-2



S54 . .
PASSENGER’S SEAT, SEAT HEATER
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .
center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19-1





S56 . .



PASSENGER’S SEAT, SEAT CONTROL
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . .


under passenger’s seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


19-1



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




COMPONENT LOCATION CHART
:





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COMP.8500.0 7100.0LOCATION DESCRIPTION
X58 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . 03-4
X63 . .

(9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .

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



03-4
X64 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . 03-4
X65 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-4

X69 . .
(25 PINS, GRAY) . . . . . . . . . . . . . . . . . . .
rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
09-2
04-2
X70 . .

(7 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .

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

09-3

05-2
X72 . . (6 PINS, NATURAL) . . . . . . . . . . . . . . . . . LH footwell underside of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-2 03-6
X74 . . (50 PINS, YELLOW) . . . . . . . . . . . . . . . . . below rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-3 04-1

X78 . .
(4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .
LH footwell on clutch pedal support bracket behind LH footwell trim . . . . .
15-3
03-1
X85 . . (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3 05-3
X105 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . on underside of engine hood
X106 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . on underside of engine hood

X107 .

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

front RH side of engine compartment on washer fluid reservoir . . . . . . . . . .

07-3


X111 . . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment top of brake fluid reservoir . . . . . . . . . 09-2
X113 . (3 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . . above RH front wheel well behind RH front wheel . . . . . . . . . . . . . . . . . . . . . 07-2 09-2

X114 .
(3 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . .
above LH front wheel well behind LH front wheel . . . . . . . . . . . . . . . . . . . . . .
07-2
09-2
X116 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . LH footwell on clutch pedal support bracket behind LH footwell trim . . . . . 15-3
X118 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . above LH front wheel well behind LH front wheel . . . . . . . . . . . . . . . . . . . . . . 07-2
X121 . (2 PINS, WHITE) . . . . . . . . . . . . . . . . . . . . LH footwell underside of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3

X123 .

(2 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . .

front RH side of engine compartment on washer fluid reservoir . . . . . . . . . .

14-3


X128 . (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . LH front of vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-3




COMPONENT LOCATION CHART
:





 !
 

COMP.8500.0 7100.0LOCATION DESCRIPTION
X319 . (8 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . in LH side of luggage compartment behind trim panel . . . . . . . . . . . . . . . . . . 22-3 01-4
X322 .

(6 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .

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

20-1

03-6
X324 . (4 PINS, YELLOW) . . . . . . . . . . . . . . . . . . center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2 07-1
X333 . (4 PINS, NATURAL) . . . . . . . . . . . . . . . . . rear of engine compartment below center of cowl . . . . . . . . . . . . . . . . . . . . . 09-1 06-3

X336 .
(6 PINS, NATURAL) . . . . . . . . . . . . . . . . .
under roof center panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
00-3
03-6
X351 .

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

in upper RH B–pillar




X352 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . in upper LH B–pillar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-3
X371 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . front RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-3

X372 .
(2 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . .
in RH front bumper



X379 . (1 PIN, NATURAL) . . . . . . . . . . . . . . . . . . on lift gate
X380 . (1 PIN, NATURAL) . . . . . . . . . . . . . . . . . . on lift gate
X381 . (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . under roof center panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-1 01-1
X382 .

(3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .

above RH sun visor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15-1

01-1
X383 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . under rear of car LH side of on differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-1
X389 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment

X390 .
(2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .
RH side of dash behind glove box



X400 . (8 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . in LH rear side of luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-4
X401 . (1 PIN, BLACK) . . . . . . . . . . . . . . . . . . . . . above LH sun visor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-1
X402 . (1 PIN, BLACK) . . . . . . . . . . . . . . . . . . . . . above RH sun visor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1

X413 .

(3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . .

at back of rear window shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



01-1
X423 . (1 PIN, –––) . . . . . . . . . . . . . . . . . . . . . . . . below center console on rear of park brake lever . . . . . . . . . . . . . . . . . . . . . . 15-2

B1
RIGHT FRONT
SPEED SENSOR –
ABS
B2
LEFT FRONT
SPEED SENSOR –
ABS
B16
LEFT FRONT
BRAKE PAD
SENSOR*E26
LEFT FOG LIGHT
E27
RIGHT FOG LIGHT
X768
X769
*
*X143
X713




COMPONENT LOCATION VIEWS




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RH SIMILAR *RH SIMILAR *