brake BMW 318ti 1998 E36 Electrical Troubleshooting Manual



 !
S30
BRAKE LIGHT
SWITCH
8
S3
AUTOMATIC
TRANSMISSION
RANGE SWITCH
S8503
PROGRAM SWITCHA8500
TRANSMISSION
CONTROL MODULE
(EGS)
L1 L2 L3 L4
54
87
K6300
ENGINE CONTROL
MODULE RELAY 2460.2-02
F285A
26
2460.2-00
36379
TXD
X850088
2460.2-01
48
F2610AP90
FRONT POWER
DISTRIBUTION BOX
204513 2718
S8507
KICK–DOWN
SWITCH 2460.2-043428
 " 1 

'
 
 +
 1 
" 
 
F4615AP90
FRONT POWER
DISTRIBUTION BOX
10
Y8505y
TRANSMISSION
VALVE UNIT
522 2460.2-03
AM
X8500
X8500
EGSA4S 270R
2460.2-04
5330334322114
N
S
42 15
A6000
ENGINE CONTROL
MODULE (DME) 2460.2-02
8586
A2w
INSTRUMENT
CLUSTER 2460.2-04
25
5552
Y19
SHIFT–LOCK 2460.2-03
2
4046
A52
SLIP CONTROL
MODULE
(ABS/ASC) 2460.2-02
12 17
NOT USED
6
POWER
DISTRIBUTION
0670.2
RXD 87
60
D100
DATA LINK
CONNECTOR
2460.2-04
57
A8
CRUISE CONTROL
MODULE
(TEMPOMAT)
NOT USED
2460.2 ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)


 



 !
Pin Assignments


E = Input, A = Output, M = Ground
X8500
Pin Type Description/Function Connection
89
Not used
90AShift-lock solenoid controlShift-lock
91Not used
92ASolenoid valve band control (–)Transmission valve unit
93AHydraulic pressure regulator control (–)Transmission valve unit
94MGroundGround point
95Not used
96EGear range signal L2Automatic transmission range switch
97EGear range signal L4Automatic transmission range switch
98EBrake pedal positionBrake light switch
99Not used
100ESport mode signalNot used
101EManual mode signalProgram switch
102EOutput speed (–)Transmission valve unit
103MGround for shieldShield for speed sensor
104Not used
105AS-program indicationNot used
106EKick-down signalKick-down switch
107Not used
108EAutomatic mode signalProgram switch
109EOil temperature signal (–)Transmission valve unit
11 0EOil temperature signal (+)Transmission valve unit
111Not used
11 2Not used
11 3AFault indicator signalInstrument cluster
11 4EBattery voltageB+ junction point
11 5AM-program indicationProgram switch
11 6MGroundGround point
11 7Not used
11 8ASolenoid valve 1 control (–)Transmission valve unit


 



 !
Pin Assignments


E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
11 9
Not used
120ATorque converter clutch solenoid valve
control (–)Transmission valve unit
121ASolenoid valve 2 control (–)Transmission valve unit
122MGroundGround point
123Not used
124EGear range signal L1Automatic transmission range switch
125EGear range signal L3Automatic transmission range switch
126Not used
127Not used
128ERPM speed signal TDEngine control module
129Not used
130EOutput speed (+)Transmission valve unit
131Not used
132Not used
133AA-program indicationProgram switch
134EA/C compressor-ON-signalEngine control module
135Not used
136EBrake switch test signalBrake light switch
137Not used
138Not used
139Not used
140AVoltage supplyShift-lock/Transmission valve unit
141EVoltage pressure regulatorTransmission valve unit
142EVoltage supply, terminal 87Engine control module relay
143EVoltage supply, terminal 87Engine control module relay
144Not used
145ECruise control signalCruise control module
146Not used
147Not used
148EProgramming voltageData link connector
149Not used

.5 GR/BR
ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)


SHIFT LOCK, DATA LINK, KICK–DOWN SWITCH




!


15
5V (15)
25
34 6 18 X8500
X85071X69
17 25X16
5A2w
INSTRUMENT
CLUSTER
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
S8507
KICK–DOWN
SWITCH
1) NORMAL
2) ACCELERATOR
PEDAL FULLY
DEPRESSED GROUND
DISTRIBUTION
0670.4 .5 GR/BR
.75 GR/GE
1.5 SWAUSF
X1001832F46
15AP90
FRONT POWER
DISTRIBUTION BOX
X6912
10
.5 BL/RT .75 BL/RT
BRAKE LIGHTS
6325.0X181
1.5 BL/RT
FUSE DETAILS
0670.3
1 2
31
S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
87 .5 WS/GE
RXD88 .5 WS/VI
TXD
DATA LINK
0670.5
GROUND
DISTRIBUTION
0670.4
X781
2 1
2X78





 

60 .75 WS/GNX8500
X6454
28
GROUND
DISTRIBUTION
0670.4
F275A
23 X16
FUSE DETAILS
0670.3
X1001714
48
X78
3X69
11 .5 BR/GR
43
.5 BR/GR
4 X78
GROUND
DISTRIBUTION
0670.4
X173
57
7 14 .35 GE/BR
S30
BRAKE LIGHT
SWITCH
3) BRAKE PEDAL
DEPRESSED
(TEST)
4) BRAKE PEDAL
RELEASED
(NORMAL)
.35 GE/BR
A8
CRUISE CONTROL
MODULE
(TEMPOMAT) X22
!
1 1 1





 

3450.0 SLIP CONTROL (ABS)




!



14
FUSE DETAILS
0670.316P90
FRONT POWER
DISTRIBUTION BOX
F275A
X10018
F3830A
X1139424
A202
ABS CONTROL
MODULE/HY-
DRAULIC UNIT
GROUND
DISTRIBUTION
0670.4
32X10018
F4615A
2
F215A
X1001720
F1030A
X10015
21 X17
23 X16
21
A2w
INSTRUMENT
CLUSTER1
X78
2 X78
S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
A6000
ENGINE CONTROL
MODULE (DME)
79 X6000
.5 WS/GR/GE
21
9 X20
.75 BR/RT
1816
FUSE DETAILS
0670.3
4259X11394
7
DATA LINK
0670.5
, .#
8
GROUND
DISTRIBUTION
0670.4
FUSE DETAILS
0670.3
1.5 BL/RT
.35 WS/VI X181
TXD


.35 BL/RT .35 GR/SW/GEBRAKE LIGHTS
6325.0FUSE DETAILS
0670.3 FUSE DETAILS
0670.3
31
X116
X116
S29
BRAKE LIGHT
SWITCH
1) NORMAL
STATE
2) BRAKE PEDAL
DEPRESSED
31
WITH EGS



 !
F215A
3450.1-01
3450.1-00
Y1
ABS HYDRAULIC
UNITP90
FRONT POWER
DISTRIBUTION BOX
K125
ABS PUMP MOTOR
RELAY, TIMED
A52
SLIP CONTROL
MODULE
(ABS/ASC)
17 X1170
41 X11395
TXD 36


F1030AF275A
A2w
INSTRUMENT
CLUSTER
42528311
S30
BRAKE LIGHT
SWITCH F38
30AF4615A
3
3450.1-00
3450.1-00
32 11
B2
LEFT FRONT
SPEED SENSOR –
ABS 3450.1-0313 34
B4
LEFT REAR SPEED
SENSOR – ABS 3450.1-0312 33
B1
RIGHT FRONT
SPEED SENSOR –
ABS 3450.1-0314 35
B3
RIGHT REAR
SPEED SENSOR –
ABS 3450.1-033776
A6000
ENGINE CONTROL
MODULE (DME) 3450.1-02A8500
TRANSMISSION
CONTROL MODULE
(EGS) 3450.1-02
2232425262227294
F215A
S6
ASC SWITCH 3450.1-02
39
LIGHT SWITCH
DETAILS
6300.0
404
58g
X1170
15
2
S29
BRAKE LIGHT
SWITCH
X11395
M93
AUXILIARY
THROTTLE
POSITION MOTOR
(ADS)R6255z
THROTTLE
POSITION SENSOR
(ASC)
1930831
X1170X11395X1170
X1170X11395
3450.1-02
3450.1-00X1170
WITH EGS
3450.1 SLIP CONTROL (ABS/ASC)


 



 !
Pin Assignments


E = Input, A = Output, M = Ground
X1170
Pin Type Description/Function Connection
1
ALeft front outlet valveABS hydraulic unit
2ALeft front inlet valveABS hydraulic unit
3MGroundGround point
4EVoltage supplyFuse 21
5Not used
6E/ACAN-LOWDME/EGS module
7E/ACAN-HIGHDME/EGS module
8AAccelerator pedal position, voltageAccelerator pedal position sensor (ASC)
9MAccelerator pedal position, groundAccelerator pedal position sensor (ASC)
10Not used
11ESpeed signalLeft front speed sensor (ABS)
12ESpeed signalRight front speed sensor (ABS)
13ESpeed signalLeft rear speed sensor (ABS)
14ESpeed signalRight rear speed sensor (ABS)
15ESignal pump motorABS pump motor relay
16Not used
17EBrake pedal positionBrake light switch
18Not used
19MGroundGround point
20Not used
21Not used
22ARight rear outlet valveABS hydraulic unit
23ARight front inlet valveABS hydraulic unit
24ARight front outlet valveABS hydraulic unit
25ALeft rear outlet valveABS hydraulic unit
26ALeft rear inlet valveABS hydraulic unit
27ARight rear inlet valveABS hydraulic unit
28AActivate relayABS pump motor relay
29ASeperator valveABS hydraulic unit
30EAccelerator pedal position, signalAccelerator pedal position sensor (ASC)





 

X11395
X11393
SLIP CONTROL (ABS/ASC)



!



K125
ABS PUMP MOTOR
RELAY, TIMED


32X10018
1 X78
.5 GR/SW/GEX181
1.5 BL/RT
216X1001814X1001720X10015
212 X78
692
48 X11393
23 X16
17
BRAKE LIGHTS
6325.0
440
.75 BL/RT
A52
SLIP CONTROL
MODULE
(ABS/ASC) S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
.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
3450.1-01
.35 RT/BL
21
, .#
X116
X116
S29
BRAKE LIGHT
SWITCH
1) NORMAL
STATE
2) BRAKE PEDAL
DEPRESSED
30X1170
32 X6255
8
11X603112 .5 WS/RT .5 BL/GN
.5 GR/SW .5 GR/BL
R6255z
THROTTLE
POSITION SENSOR
(ASC)
.5 GR/WS
X11704
1 X6255
WITH EGS


!
6211.0-04
A
F4615A
16K16
HAZARD FLASHER
RELAY S7
COMBINATION
SWITCH
F275A
P90
FRONT POWER
DISTRIBUTION BOX
A2w
INSTRUMENT
CLUSTER F31
5A
A6000
ENGINE CONTROL
MODULE (DME)
18
B6232
ENGINE COOLANT
TEMPERATURE
SENSOR1
B10
VEHICLE SPEED
SENSOR 6211.0-04G6509
GENERATOR
5B
D+ C
S2
IGNITION SWITCH 6211.0-00
F235AF1515A NSW
232248B
6312.0
16312.036313.04A
6313.0
1B
6313.0
2A
LIGHT SWITCH
DETAILS
6300.0 #!;
15
A64
WIPER/WASHER
MODULE (LOW II) 6211.0-03A8
CRUISE CONTROL
MODULE
(TEMPOMAT) 6211.0-03N9
RADIO 6211.0-03A35y
BOARD
COMPUTER
(BC – LOW) 6211.0-03
2
A51
WIPER/WASHER
MODULE 6211.0-03
2017
B6
FUEL LEVEL
SENSOR 6211.0-04B25y
FUEL TANK
SENSOR II
34A617
S31
PARK BRAKE
SWITCH14
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE 6211.0-00
6211.0-0018
B18
BRAKE FLUID
LEVEL SWITCH 6211.0-0019
B6231
OIL PRESSURE
SWITCH5
A8500
TRANSMISSION
CONTROL MODULE
(EGS) 6211.0-0119
B17
RIGHT REAR
BRAKE PAD
SENSOR B16
LEFT FRONT
BRAKE PAD
SENSOR
A52
SLIP CONTROL
MODULE
(ABS/ASC)
243
1230.0A
B
6211.0-01 6211.0-01
6211.0-00A
B
A= X16B= X17C= X271
BAB
6211.0-02
6211.0-02 6211.0-05
9
B
2316
6300.0
S14
DRIVER’S DOOR
JAMB SWITCH6211.0-04
D100
DATA LINK
CONNECTOR
13
S2
IGNITION SWITCH 6211.0-05
22 B
H10
CHIME MODULE 6211.0-05
S58
DRIVER’S SEAT
BELT SWITCH 6211.0-00 14
1221
6211.0-00
A202
ABS CONTROL
MODULE/
HYDRAULIC UNIT
ABS ASC
6211.0-02
12
X16
TXD
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
10Not used
11Not used
12Not used
13Not used
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)
21Not used
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