light BMW 318ti 1998 E36 Electrical Troubleshooting Manual






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.5 BRX1245
1S77
DRIVER’S
MAKE–UP MIRROR
SWITCH
E34
FRONT DOME
LIGHT/MAP READ-
ING ASSEMBLY
2.5 BRX1814
6
.5 BR
X13003
X495
X12461S78
PASSENGER’S
MAKE–UP MIRROR
SWITCH
.75 BR.35 BRX643
4S238
FOLDING SUN-
ROOF SWITCH
X3364
4 BRX130571A36
REAR WIPER/
WASHER INTERVAL
CONTROL MODULE
1.5 BR
2.5 BRX272
2A56
TILT/SLIDE SUN-
ROOF CONTROL
ASSEMBLY
4 BR0670.4-08
K45
FOLDING SUN-
ROOF COMFORT
RELAY
.5 BR
X7481
E61
LEFT FRONT
FOOTWELL LIGHT
.5 BR
X7451
E62
RIGHT FRONT
FOOTWELL LIGHT
(PARTIAL)

E28
FRONT CIGAR
LIGHTER

GROUND DISTRIBUTION
GROUND X10012





!

.35 BR
E29
FRONT CIGAR
LIGHTER LIGHT
2.5 BR
.35 BRX532
1
.5 BR2


S8503
PROGRAM SWITCH
X8503
X1014
1
X10064
4 BR2.5 BR
0670.4-16
 

S6
ASC SWITCH
X5214
A51
WIPER/WASHER
MODULE
X285
7
S5
WIPER/WASHER
SWITCH
X2951
.75 BR

X5401





!

.5 BRX371
1S21w
ENGINE HOOD
SWITCH
.5 BRX516
3
S37
GLOVE BOX LIGHT
SWITCHS18
HAZARD SWITCH
1E82
TRANSMISSION
POSITION
INDICATOR LIGHT
X1193
.5 BR
X218
0670.4-144 BR 2.5 BR
4 BR .5 BR
0670.4-15




GROUND DISTRIBUTION
GROUND X10012 

X10012
.75 BR
X133052 CENTER CONSOLE
TELEPHONE CONNECTOR

GROUND DISTRIBUTION
GROUND X13006





!



1.5 BR
0670.4-18
H5
RIGHT REAR TURN
LIGHTH28
RIGHT BACK UP
LIGHTH30
RIGHT TAIL LIGHTH31
RIGHT BRAKE
LIGHTH39
RIGHT TAIL LIGHT
8 X318
E47
RIGHT LUGGAGE
COMPARTMENT
LIGHT ASSEMBLY
1.5 BR
0670.4-18 H6
LEFT REAR TURN
LIGHTH24
LEFT BRAKE LIGHTH25
LEFT TAIL LIGHTH27
LEFT BACK UP
LIGHTH37
LEFT TAIL LIGHT
5 X319
E46
LEFT LUGGAGE
COMPARTMENT
LIGHT ASSEMBLY
 

GROUND DISTRIBUTION
X7091 X710
1
.75 BR .75 BR
X6381
GROUND X13006





!

X7131B17
RIGHT REAR
BRAKE PAD
SENSOR
2.5 BRM2
FUEL PUMP
X3521S14
DRIVER’S DOOR
JAMB SWITCH
.5 BRX733
1E57
DRIVER’S SEAT
HEATER
.5 BRX732
1
4 BR E56
DRIVER’S SEAT-
BACK HEATERE44
RIGHT LICENSE
PLATE LIGHT
E43
LEFT LICENSE
PLATE LIGHT
X13007
.5 BR





0670.4-17
1 BR
X4002
1.5 BR 1.5 BR .5 BR
X18441N8
ANTENNA
AMPLIFIER AM/FM
2.5 BR
X13006
 

X7112S61y
LUGGAGE
COMPARTMENT
LIGHT SWITCH
.75 BR
X12923S302
CENTRAL LOCKING
SWITCH
.35 BR
.5 BRX1892
1N22
CD CHANGER
X3801E9
REAR DEFOGGER I
2.5 BR
X102711E32z
REAR CENTER
INTERIOR LIGHT
.5 BR TELEPHONE CONNECTOR
LUGGAGE COMPARTMENT
X4131H34
HIGH LEVEL STOP
LIGHT
.5 BR
X6036S51
DRIVER’S SEAT,
SEAT CONTROL
SWITCH
2.5 BR
2.5 BRX840
X2751
2.5 BR



 !
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

ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)
9
31313131



GEAR SELECTOR SWITCH




!


P90
FRONT POWER
DISTRIBUTION BOX F28
5AF2610A
L4L3L2 L1A8500
TRANSMISSION
CONTROL MODULE
(EGS) 9 37 8 36 X8500
86 74
.5 BR/WS.5 BL/WS.5 BR/SW .5 BL/SW
X5113S3
AUTOMATIC
TRANSMISSION
RANGE SWITCH
0) OFF (LOW)
1) ON (HIGH)
2) CLOSED IN
REVERSE
2 X5115
L4 L3 L2 L1
R
E46
LEFT LUGGAGE
COMPARTMENT
LIGHT ASSEMBLY
7
X319
5
X191
21 20 19 X6918
A8
CRUISE CONTROL
MODULE
(TEMPOMAT)X22
.35 BR/SW.5 BR/SW1 BL/GE .5 BR/WS .5 BL/WS .5 BR/SW .5 BL/SW.5 BR/SW
L1 L2 L3 L4
P
R
N
D
3
2
11101
1000
1110
0001
0011
1011
0010
4 X13
GROUND
DISTRIBUTION
0670.4
H27
LEFT BACK UP
LIGHT X319
1 BL/GE
X428BACK UP LIGHTS
6322.0 FUSE DETAILS
0670.3
01
X13006
01010102
16X1001712EGS A4S 270R
E82
TRANSMISSION
POSITION INDICA-
TOR LIGHT 2
X1193
1 1 GR/RT
X1193
GROUND
DISTRIBUTION
0670.4
X10012
LIGHT SWITCH
DETAILS
6300.0 58g
X1019
.5 GR/RT
1 BL/GE
FUSE DETAILS
0670.3
1 BL/GE
A836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II) X1659
5





 

.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