x63 BMW 318is 1998 E36 Electrical Troubleshooting Manual




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ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
K6304
SECONDARY AIR
PUMP RELAY
G6430
B+ JUMP START
JUNCTION POINT
,&.,. #
1 RT/WS/GE
GROUND
DISTRIBUTION
0670.4 2 X6263
1 X6263
2 X6163
1 X6163
.5 RT/WS
.5 RT/WS
.5 GE/RT
66
Y6263
FUEL CHANGE-
OVER VALVEY6163
SECONDARY AIR
PUMP VALVE
.5 BR/WS82
465 X6304
X6304
POWER
DISTRIBUTION
0670.2
X6821
(PARTIAL)
.5 RT/WSPOWER
DISTRIBUTION
0670.2
.5 BR/WS
.5 BR/WSX6891
4 RT/GE
2 X6133
1 X6133
A6000
ENGINE CONTROL
MODULE (DME) X6000
644 BRY6133
AIR PUMP
1210.20-00
3 X10015
4 X10015
P90
FRONT POWER
DISTRIBUTION BOX
2 X13170
1 X13170
Y199
CARBON
CANISTER VALVE
65
.5 GN/BL
2 X6031
.5 GN/BL
28 X14
.5 GN/BL
9 X6031
.5 RT/WS
FUSE DETAILS
0670.3
F25A
X6431

54 1.5 RT/WS
K6300
ENGINE CONTROL
MODULE RELAY
4 RT/WSX6300287ENGINE CONTROL
SYSTEM (DME M5.2,
4–CYLINDER M44)
1210.20X6821
X8500





POWER
ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R) $%%


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A8500
TRANSMISSION
CONTROL MODULE
(EGS)
2 14
.5 TR
.5 SW

6
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
W8516
SHIELD UP TO 10mm
BEFORE ELECTRONIC
TRANSMISSION
OUTPUT SHAFT SPEED
SENSOR (EGS)W8516
SHIELD UP TO 10mm
BEFORE ELECTRONIC
TRANSMISSION
OUTPUT SHAFT
SPEED SENSOR (EGS)X8500
22 42
14
12 16
X8500
21 4 14 151 X8516
2 X8516
.5 GE
X8505
.5 VI.5 SW
X8505
Y8505
TRANSMISSION VALVE UNIT
1) SOLENOID VALVE 1
2) SOLENOID VALVE 2
3) HYDRAULIC PRESSURE
REGULATOR
4) BAND SOLENOID
5) TORQUE CONVERTER
CLUTCH SOLENOID
VA LV E
6) SPEED SENSOR
7) OIL TEMPERATURE
SENSOR

9
33 .5 GN

11
30 .5 OR
2
52
.5 VI
3

6
5 .5 GR
53
4 .5 RT
5

1
32
.5 BL
55 1.5 RT/WS
X8073
318is
.5 VI
.75 BR
15
5V (15)
2460.2-04

31
7
3131313131313131

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ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)
K6300
ENGINE CONTROL
MODULE RELAY
425V (15)
.5 GE22
.5 TR53A8500
TRANSMISSION
CONTROL MODULE
(EGS)
X63002
1.5 RT/WS
ENGINE CONTROL
SYSTEM MS41.1
(6–CYLINDER M52)
1210.17
X6821
87a
4 RT/WS

12V (15)
54
X850019
4 X69
.5 WS/GN/GE
31
W8516
SHIELD UP TO
10mm BEFORE
ELECTRONIC
TRANSMISSION
OUTPUT SHAFT
SPEED SENSOR
(EGS)
A52
SLIP CONTROL
MODULE
(ABS/ASC)6 X1171
.5 WS/GN/GEWITH ASC
8283
.5 BL
.75 RT
323i, 328i
85
85
X600086
86
.35 SW .35 GEA6000
ENGINE CONTROL
MODULE (DME)
CAN LOW CAN HIGH
X227
57 .35 GE/BRA8
CRUISE CONTROL
MODULE
(TEMPOMAT)
X6914
.5 GE/BR
X8500
CAN LOW CAN HIGH

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ELECTRONIC TRANSMISSION CONTROL (EGS A5S 310Z)
26 X7000
X6411
K6300
ENGINE CONTROL
MODULE RELAY
16
W8505
SHIELD UP TO
10mm BEFORE
ELECTRONIC
TRANSMISSION
OUTPUT SHAFT
SPEED SENSOR
(EGS)
5V (15)
.35 BL
425V (15)
.35 WS22
.5 SW/RT53
.75 VIA7000
TRANSMISSION
CONTROL MODULE
(EGS) 1 RT
X63002
1.5 RT/WS
ENGINE CONTROL
SYSTEM MS41.1
(6–CYLINDER M52)
1210.17X6821
87a
4 RT/WS

5V (15)
54
X700019
4 X69
.5 WS/GN/GE
G6430
B+ JUMP START
JUNCTION POINT
31
31
POWER
DISTRIBUTION
0670.2
6 RT
6 RT
W8521
AGS SPEED
SENSOR SHIELD
2460.4-01A52
SLIP CONTROL
MODULE
(ABS/ASC)6 X1171
.5 WS/GN/GE
82 83.5 BL
52
15 16
12
2
.5 VI
.5 VI.5 BR/VI
.5 BR/VI
Y19
SHIFT–LOCK X1178

5203.0 HEATED SEATS
X494
GROUND
DISTRIBUTION
0670.4 GROUND
DISTRIBUTION
0670.4 X13173GROUND
DISTRIBUTION
0670.4
1.5 RT/GE
4
X63
.5 RT/GE

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X100176
8730P90
FRONT POWER
DISTRIBUTION BOX F23
5A
LIGHT SWITCH
DETAILS
6300.0
X100158F4
15A
86 X63
FUSE DETAILS
0670.3
K9
UNLOADER RELAY,
TERMINAL 15
2 4
6 5 X651
2 3 1 X651
S53
DRIVER’S SEAT,
SEAT HEATER
SWITCH
0) OFF
1) MINIMUM
2) MAXIMUM
.5 RT/GE
X13129
86
85
2 2 X732
X733
1 X7331 X732.5 BR .5 BR
.5 WS/RT .5 WS/GN4 6
5X658
10 Test
9
8
7
6154
14
13
12
11
3
2 2 3 1 X658
S54
PASSENGER’S
SEAT, SEAT
HEATER SWITCH
0) OFF
1) MINIMUM
2) MAXIMUM
22 X741
X740
1 X7401 X741
E59
PASSENGER’S
SEATBACK HEATER E58
PASSENGER’S
SEAT HEATER
.5 BR .5 BR .5 WS/GE .5 WS/BL.5 RT/GE .5 RT/GE.5 GR/RT .5 GR/RT .5 GR/RT
X13004
01
0 2
X13006
01
0 2
10 Test
9
8
7
6154
14
13
12
11
3
2
58g
FOUR–DOOR
X173X494
121.5 RT/GE
X14
GROUND
DISTRIBUTION
0670.4
X495TWO–DOOR
GROUND
DISTRIBUTION
0670.4E56
DRIVER’S SEAT-
BACK HEATER E57
DRIVER’S SEAT
HEATER




COMPONENT LOCATION CHART
;






 $%%%%&
COMP.8500.0 7100.0LOCATION DESCRIPTION
X17 . . (26 PINS, BLUE) . . . . . . . . . . . . . . . . . . . . . . . . LH side of dash rear side of instrument cluster, A2w . . . . . . . . . . . . . . . . . . . . . . . . . . 28-3 00-2

X20 . .
(25 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . .
rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18-3
05-2
X22 . . (26 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . . . . . RH side of dash behind glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-2 00-2
X32 . . (12 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . LH footwell underside of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-3 04-5
X33 . . (12 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . LH footwell underside of steering column behind LH footwell trim . . . . . . . . . . . . . . . 27-3 04-5
X35 . . (12 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . below LH side of dash RH side of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-3 04-5
X35 . .
(12 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . .
below LH side of dash RH side of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28-1
04-5
X44 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . 03-6
X45 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . 03-6
X51 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . 03-6
X52 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . 03-6
X53 . .

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

Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . .



03-6
X54 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . 03-6
X56 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . 03-6
X58 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . 03-6
X63 . .
(9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . .
behind LH footwell speaker grille . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


03-6
X64 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . Power Distribution Box rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . 03-6
X65 . . (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-6
X69 . . (25 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-3 05-2
X70 . . (8 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . front LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-2 02-2
X72 . .

(6 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . .

footwell, driver’s side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27-3

06-2
X74 . . (50 PINS, YELLOW) . . . . . . . . . . . . . . . . . . . . . below rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-2 02-5




COMPONENT LOCATION CHART
;






 $%%%%&
COMP.8500.0 7100.0LOCATION DESCRIPTION
X603 . (12 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04-5

X604 .
(12 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . .
RH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


04-5
X605 . (12 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . below RH side of rear seat Convertible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02-3 03-4
X605 . (12 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . in LH side of luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04-1 03-4
X606 . (26 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . below RH side of rear seat Convertible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02-3 00-2
X606 . (26 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . in LH side of luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04-1 00-2
X607
(9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . .
below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
02-2
03-6
X623 . (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . in upper LH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
X624 . (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . in upper RH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-1 10-1
X625 . (6 PINS, WHITE) . . . . . . . . . . . . . . . . . . . . . . . . LH front door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-3 05-1
X638 . (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . below RH side of rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-2

X641 .

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

RH front door behind door panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



08-2
X643 . (4 PINS, YELLOW) . . . . . . . . . . . . . . . . . . . . . . in roof panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
X644 . (6 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . in lower LH rear door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-3
X645 . (6 PINS, BLUE) . . . . . . . . . . . . . . . . . . . . . . . . . in lower LH rear door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 06-2
X646 .
(6 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . .
in lower RH rear door behind trim panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


06-2
X647 . (6 PINS, BLUE) . . . . . . . . . . . . . . . . . . . . . . . . . in lower RH rear door behind trim panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08-4
X651 . (6 PINS, YELLOW) . . . . . . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-2 05-3
X652 . (6 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . driver’s seat left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-1
X658 . (6 PINS, YELLOW) . . . . . . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-1 05-3
X660 .

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

LH front door in door at key lock assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



05-4
X663 . (4 PINS, GRAY) . . . . . . . . . . . . . . . . . . . . . . . . . RH side of IHKA Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-3 10-1




COMPONENT LOCATION CHART
;






 $%%%%&
COMP.8500.0 7100.0LOCATION DESCRIPTION
X6240 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . LH side of engine near starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07-2

X6252
(3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . .
LH side of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13-3
07-3
X6252 (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . LH side of engine near oil level stick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1 10-2
X6256 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . front of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 07-2
X6256 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . front of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-2
X6275 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . top center of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2

X6300
(9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . .
rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


03-6
X6301 (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-6
X6304 (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-6
X6326 (9 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment in E–Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39-1 03-6

X6430
CABLE SOCKET B+ JUMP START
JUNCTION POINT . . . . . . . . . . . . . . . . . . . .
rear RH side of engine compartment





X6431
CABLE SOCKET B+ JUMP START
JUNCTION POINT . . . . . . . . . . . . . . . . . . . .
rear RH side of engine compartment





X6432
CABLE SOCKET B+ JUMP START
JUNCTION POINT . . . . . . . . . . . . . . . . . . . .
rear RH side of engine compartment





X6433
CABLE SOCKET B+ JUMP START
JUNCTION POINT . . . . . . . . . . . . . . . . . . . .
rear RH side of engine compartment





X6437
CABLE SOCKET B+ JUMP START
JUNCTION POINT . . . . . . . . . . . . . . . . . . . .
rear RH side of engine compartment




X6454 GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment back of RH side shock tower . . . . . . . . . . . . . . 06-2

X6456
GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
on cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
07-2

X6509 CABLE SOCKET ALTERNATOR B+ . . . . . . . front LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-2
X6510 CABLE SOCKET STARTER, TERMINAL 50 rear LH side of engine compartment below intake manifold




COMPONENT LOCATION VIEWS $%%





%%&

M2
FUEL PUMP
X6120X638X679


318isY6120
EVAPORATIVE
EMISSION VALVE

B21
ON–BOARD
COMPUTER
TEMPERATURE
SENSOR
X770




COMPONENT LOCATION VIEWS $%%





%%&

K6326
UNLOADER RELAY,
TERMINAL 15
X6326
X494
GROUND
X498
GROUND B78
DRIVER’S SIDE
IMPACT SENSOR
X1885G14
LEFT SIDE AIR BAG
GAS GENERATOR
X11335