brake sensor BMW M3 1998 E36 Electrical Troubleshooting Manual



%%&
Pin Assignments (318is)
 $%%




E = Input, A = Output, M = Ground
X1170
Pin Type Description/Function Connection
56
ARight rear inlet valveABS hydraulic unit
57ASeparator valveABS hydraulic unit
58MGroundGround point
59EVoltage supplyFuse 21
60Not used
61E/ACan LowDME/EGS module
62E/ACan HighDME/EGS module
63EASC throttle flap signalAccelerator pedal position sensor
64EASC throttle flap potentiometer (–)Accelerator pedal position sensor
65Not used
66ASensor groundLeft front speed sensor (ABS)
67ASensor groundRight front speed sensor (ABS)
68ASensor groundLeft rear speed sensor (ABS)
69ASensor groundRight rear speed sensor (ABS)
70EPump motor signalABS pump motor relay
71Not used
72EBrake pedal positionBrake light switch
73Not used
74MGroundGround point
75Not used
76Not used
77ALeft front outlet valveABS hydraulic unit
78ARight rear outlet valveABS hydraulic unit
79ALeft rear inlet valveABS hydraulic unit
80ALeft rear outlet valveABS hydraulic unit
81ARight front outlet valveABS hydraulic unit
82ARight front inlet valveABS hydraulic unit
83AActivate relayABS pump motor relay
84ALeft front inlet valveABS hydraulic unit
85EASC throttle flap potentiometer (+)Accelerator pedal position sensor

S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED1X78
1X78
X11395
X11393

SLIP CONTROL (ABS/ASC) $%%


%%&


K125
ABS PUMP MOTOR
RELAY, TIMED


32X10018
1X116
.5 GR/SW/GEX181
1.5 BL/RT
216X1001814X1001720X10015
212X116
692
48 X11393
23 X16
17
BRAKE LIGHTS
6325.0
440.75 BL/RT
A52
SLIP CONTROL
MODULE
(ABS/ASC)
.5 BR/SW 2.5 RT/GN/GE
A2w
INSTRUMENT
CLUSTERP90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
GROUND
DISTRIBUTION
0670.4
F4615AF215AF3830A F275AF1030A
.5 BL/BR12 X17
FUSE DETAILS
0670.3 FUSE DETAILS
0670.3
42
FUSE DETAILS
0670.3
3450.1-06
.35 RT/BL
21
318is
,.#
S29
BRAKE LIGHT
SWITCH
1) NORMAL STATE
2) BRAKE PEDAL
DEPRESSED
X1170
4
8X1170
23 X6255
30
12X603111.5 WS/RT .5 BL/GN
.5 GR/SW .5 GR/BL
R6255
ACCELERATOR
PEDAL POSITION
SENSOR (ASC)
.5 GR/WS1 X6255
3450.1-06 3450.1-063450.1-06
WITH EGS

 $%% 
%%&
A4
6211.0-04
F235A
K16
HAZARD FLASHER
RELAY S7
COMBINATION
SWITCHF315A
P90
FRONT POWER
DISTRIBUTION BOX
A2w
INSTRUMENT
CLUSTER F27
5A
TXD
RXD 12
A
11
18
B6232
ENGINE COOLANT
TEMPERATURE
SENSOR 6211.0-021
B10
VEHICLE SPEED
SENSOR 6211.0-04G6509
GENERATOR
5B
D+ C
S2
IGNITION SWITCH 6211.0-00F46
15AF1515A NSW
2223168B
6312.0
16312.0342A
LIGHT SWITCH
DETAILS
6300.0
D100
DATA LINK
CONNECTOR #&:
15
A96
CONVERTIBLE TOP
CONTROL MODULEA18
HIFI AMPLIFIER 6211.0-03 6211.0-03
A8
CRUISE CONTROL
MODULE
(TEMPOMAT)
A115
AUTOMATIC
CLIMATE CONTROL
MODULE 6211.0-03
6211.0-03N9
RADIO 6211.0-03
N4
ON–BOARD
COMPUTER 6211.0-05
2102426 B
17
B6
FUEL LEVEL
SENSOR 6211.0-04B25y
FUEL TANK
SENSOR II
34617
S31
PARK BRAKE
SWITCH 6211.0-0018
B18
BRAKE FLUID
LEVEL SWITCH 6211.0-0019
B6231
OIL PRESSURE
SWITCH 6211.0-009
H10
CHIME MODULE 6211.0-0519
B17
RIGHT REAR
BRAKE PAD
SENSOR B16
LEFT FRONT
BRAKE PAD
SENSOR
21
A202
ABS CONTROL
MODULE/HY-
DRAULIC UNIT243
N10
MULTI–FUNCTION
CLOCK 6211.0-03
AA
6211.0-01 6211.0-01
6211.0-01A
B
A= X16B= X17C= X271
S14
DRIVER’S DOOR
JAMB SWITCH
23
6211.0-05
S2
IGNITION SWITCH 6211.0-05
22B14
S58
DRIVER’S SEAT
BELT SWITCH 6211.0-01B
20 21 16A6000
ENGINE CONTROL
MODULE (DME)
6211.0-05 6211.0-04
6211.0-02
15
6211.0-01
B
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM
CONTROL
MODULE 6211.0-00
14
1AB
6211.0-04
B5
N24
ROLLOVER
SENSOR 6211.0-05 B
10
A8500
TRANSMISSION
CONTROL MODULE
(EGS) 6211.0-01
CONVERTIBLE
12
A52
SLIP CONTROL
MODULE
(ABS/ASC) 6211.0-01
6211.0-0413
B6238
OIL TEMPERATURE
SENSOR
6211.0-00
13
AAB
A51
WIPER/WASHER
MODULE 6211.0-03A18
HIFI AMPLIFIER 6211.0-03
A64
WIPER/WASHER
MODULE (LOW II)
TWO–DOOR
FOUR–DOOR
1230.0
A7000
TRANSMISSION
CONTROL MODULE
(EGS)CONVERTIBLE
WITH TOP HIFI
11
WITH ABS4–CYLINDER
WITH ASC
A52
SLIP CONTROL
MODULE
(ABS/ASC)
6211.0-00
6–CYLINDER
WITH ASC
6211.0 INSTRUMENT CLUSTER



 

%%&
Pin Assignments
 $%%

E = Input, A = Output, M = Ground
X16
Pin Type Description/Function Connection
1
EHigh beam indicator controlCombination switch
2ETerminal 58g, instrument illumination powerDimmer
3ERight turn signal indicator controlHazard flasher relay
4ELeft turn signal indicator controlHazard flasher relay
5EWarning lamp for EGS fault (information
signal transmission oil temperature)Transmission control module (EGS)
6Not used
7Not used
8Not used
9Not used
10EConvertible: Rollover signalRollover sensor
11ARxD diagnostic data linkData link connector
12E/ATxD diagnostic data linkData link connector
13EOil temperatureEngine oil temperature sensor
14EAirbag warning lamp (SRS) controlSupplemental restraint system control
module
15Not used
16E“Check engine” indicator controlEngine control module (DME)
17EPark brake warning lamp controlPark brake switch
18EBrake fluid warning lamp controlBrake fluid level switch
19EBrake pad wear warning lamp controlBrake pad sensors
20ECrankshaft RPM speed signal TDEngine control module (DME)
21EFuel consumption signal + KVAEngine control module (DME)
22EVoltage supply, terminal 30Front power distribution box, fuse 31
23EVoltage supply, terminal 15 for indicator and
warning lampsFront power distribution box, fuse 27
24MGround supply, terminal 31 for instrument
cluster electronicsGround point
25Not used
26Not used

42
X7000
6–CYLINDER
WITH ASC
.35 GR/SW/GE .5 GR/
SW/GE
25
INDICATORS

 $%%


%%&


INSTRUMENT CLUSTER
3
GROUND
DISTRIBUTION
0670.4
A2w
INSTRUMENT
CLUSTER
12) FUEL RESERVE
HEADLIGHTS/FOG
LIGHTS
6312.0
TURN/HAZARD
LIGHTS
6313.0
LIGHT SWITCH
DETAILS
6300.0
.75 GE/BR8.35 WSX161.5 BL/GN
4.5 BL/BR3X171.5 GR/RTX162
519 X16
.5 GR/BR.5 GR/BR
A8500
TRANSMISSION
CONTROL MODULE
(EGS)2 X713X1322 .5 GE
X8500X6925
2X118
1 X713
.5 GE
B16
LEFT FRONT
BRAKE PAD
SENSOR
GROUND
DISTRIBUTION
0670.4 .5 GE
B17
RIGHT REAR
BRAKE PAD
SENSOR
12
23
X13006
31
F275A
P90
FRONT POWER
DISTRIBUTION BOX
31
14 X10017
FUSE DETAILS
0670.3
2
1 X778
15 X13
.5 BL/VI/GE
14
.5 BL/VI/GE
S58
DRIVER’S SEAT
BELT SWITCH
1) BELT
UNBUCKLED
2) BELT BUCKLED
GROUND
DISTRIBUTION
0670.4
X173
N4
ON–BOARD
COMPUTER
X16
.35 BL/VI/WS
24 X17
15 X1070
N10
MULTI–FUNCTION
CLOCK
X13009
.5 WS/RT
3 X778
.5 BL/GN/GE
A7000
TRANSMISSION
CONTROL MODULE
(EGS)
21 X17
A202
ABS CONTROL
MODULE/HY-
DRAULIC UNIT 16 X11394
GROUND
DISTRIBUTION
0670.4
X173
X1712
.5 BL/BR .5 BL/BR
A52
SLIP CONTROL
MODULE
(ABS/ASC)
X10100SLIP CONTROL
(ABS/ASC)
3450.1
.5 BL/BR
WITH ABS X16
X1181
A35
ON–BOARD
DISPLAY
323i 328i, M3
X117144
25
A52
SLIP CONTROL
MODULE
(ABS/ASC) 40 X1170
X1170318is 4–CYLINDER
WITH ASCSUPPLEMENTAL
RESTRAINT
SYSTEM (AIR BAG)
3234.0




COMPONENT LOCATION CHART
;






 $%%%%&
COMP.8500.0 7100.0LOCATION DESCRIPTION


A836 .

ELECTRONIC IMMOBILIZER CONTROL
MODULE (EWS II) . . . . . . . . . . . . . . . . . . . .
RH side of dash behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38-3


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

A7000
TRANSMISSION CONTROL MODULE
(EGS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08-3

B2 . . . .

LEFT FRONT SPEED SENSOR – ABS . . . .

on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

08-3


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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-2

B10 . .
VEHICLE SPEED SENSOR . . . . . . . . . . . . . .
under rear of car on differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
08-1

B11 . . . LH HEAT EXCHANGER TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . center console

B12 . .

RH HEAT EXCHANGER TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . .

center console





B13 . .

OUTSIDE TEMPERATURE SENSOR . . . . . .

rear of engine compartment behind RH fresh air cowl . . . . . . . . . . . . . . . . . . . . . . . . .

15-2


B14 . . EVAPORATOR TEMPERATURE SENSOR . RH side of LH footwell LH side of IHKA Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-1
B16 . . LEFT FRONT BRAKE PAD SENSOR . . . . . . on LH front wheel, above brake caliper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08-3
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 . . . . . . . . . . . . . . . . .
18-3



B21 . .

ON–BOARD COMPUTER TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . .
front RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20-1




COMPONENT LOCATION CHART
;






 $%%%%&
COMP.8500.0 7100.0LOCATION DESCRIPTION
S36y DOUBLE TEMPERATURE SWITCH . . . . . . . RH top of radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09-3

S38 . .
TILT/SLIDE SUNROOF SWITCH (SHD) . . . .
roof



S40y . CENTRAL POWER WINDOW SWITCH . . . . center console


S41y .

LH REAR DOOR POWER WINDOW
SWITCH (DOOR) . . . . . . . . . . . . . . . . . . . . .
in lower LH rear door behind trim panel






S42y .

RH REAR DOOR POWER WINDOW
SWITCH (DOOR) . . . . . . . . . . . . . . . . . . . . .
in lower RH rear door behind trim panel




S53 . . DRIVER’S SEAT, SEAT HEATER SWITCH . center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-2


S54 . .

PASSENGER’S SEAT, SEAT HEATER
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30-1


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

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

34-2


S63 . . ENGINE COOLANT LEVEL SWITCH . . . . . . front RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-1

S64 . .

WASHER FLUID LEVEL SWITCH . . . . . . . . .

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

10-1


S75 . . BLOWER SWITCH . . . . . . . . . . . . . . . . . . . . . . center of dash
S77 . . DRIVER’S MAKE–UP MIRROR SWITCH . . above LH sun visor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-1

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

23-1


S123 . ABS PEDAL TRAVEL SENSOR . . . . . . . . . . . near brake master cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-3

S124 .
RIGHT REAR DOOR CONTACT . . . . . . . . . .
rear RH door pillar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33-3

S125 . LEFT REAR DOOR CONTACT . . . . . . . . . . . LH rear door jamb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-3

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




COMPONENT LOCATION VIEWS $%%





%%&



B10
VEHICLE SPEED
SENSOR
X143X383X713



* RH SIMILAR* RH SIMILAR




COMPONENT LOCATION VIEWS $%%





%%&

M9
AUXILIARY FAN
MOTOR
B18
BRAKE FLUID
LEVEL SWITCH B6205
INTAKE AIR
TEMPERATURE
SENSOR
S123
ABS PEDAL
TRAVEL SENSOR
X20
X69X111X1162
S63
ENGINE COOLANT
LEVEL SWITCH
X82
X112


318is
B6217
HOT FILM AIR
MASS METERX70
X6205X6217
M25
CRUISE CONTROL
ACTUATOR
(TEMPOMAT)