Page 127 of 382
ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)
A8500
TRANSMISSION
CONTROL MODULE
(EGS)
20 13
.35 GE/BL
37
.35 GE/BRX8565
1
8 X6031
5 X8503
.35 GE/WS
A
X85032S8503
PROGRAM SWITCH
0) OFF
1) AUTOMATIC
2) MANUAL
GROUND
DISTRIBUTION
0670.4
X1001712P90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3
4527
X8564
E
.35 GE/WS.35 GE/WS .35 GE/BLM
M .5 GE/BR .5 GE/WS
26 X85001RT
F2610A
31
15
15
0
2 1
X8500
X641012G6400
B+ JUNCTION
POINT E–BOX
POWER
DISTRIBUTION
0670.2
Page 128 of 382
ELECTRONIC TRANSMISSION CONTROL (EGS A4S 270R)
P90
FRONT POWER
DISTRIBUTION BOX
L4 L3 L2 L1
A8500
TRANSMISSION
CONTROL MODULE
(EGS) 9 37 8 36 X8500
86 74
.35 BR/
WS.35 BL/
WS.35 BR/
SW.35 BL/
SW
X5113S3
AUTOMATIC
TRANSMISSION
RANGE SWITCH
0) OFF (LOW)
1) ON (HIGH)
2) CLOSED IN RE-
VERSE
2 X5115
L4 L3 L2 L1
R
E16
LEFT REAR LIGHT
ASSEMBLY
5 X319
6
4 13 X603133 X1805A837
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS III)
.5 BR/WS .5 BL/WS .5 BR/SW .5 BL/SW.5 BR/SWFUSE DETAILS
0670.3
L1 L2 L3 L4
P
R
N
D
3
2
11 101
1 000
1 110
0 001
0 011
1 011
0 010
H27
LEFT BACK UP
LIGHT
16X1001712
X1169
1 BL/GEFUSE DETAILS
0670.3
1 BL/GE
L2
.5 BR/SW
F285AF2610A
1 00101012 0
31313131
X191
2 X18994
.35 BR/SW
NOT USED
3 X6021
.75 BL/GE
NOT USED
Page 130 of 382

Pin Assignments
E = Input, A = Output, M = Ground
X74
Pin Type Description/Function Connection
1
APyrotechnical belt tensioner (+)Driver’s side pyrotechnical belt tensioner
2APyrotechnical belt tensioner (–)Driver’s side pyrotechnical belt tensioner
3APyrotechnical belt tensioner (+)Passenger’s side pyrotechnical belt
tensioner
4APyrotechnical belt tensioner (–)Passenger’s side pyrotechnical belt
tensioner
5EPower supplyFront power distribution box, fuse 41
6MGroundGround point
7AAir bag warning indicatorInstrument cluster
8EBelt switchPassenger’s seat belt switch
9E/ATxD diagnostic data lineData link connector
10AAir bag (+)Driver’s air bag gas generator
11AAir bag (–)Driver’s air bag gas generator
12EBelt switchDriver’s seat belt switch
13AAir bag (+)Passenger’s air bag gas generator
14AAir bag (–)Passenger’s air bag gas generator
15ESeat occupancy detectorSeat occupancy detector
16AGas generatorGas generator, left side air bag
17AGas generatorGas generator, left side air bag
18AGas generatorGas generator, right side air bag
19AGas generatorGas generator, right side air bag
20EImpact sensorDriver’s side impact sensor
21EImpact sensorPassenger’s side impact sensor
22Not used
23Not used
24Not used
25Not used
26AAir bag II (+)Driver’s air bag gas generator
27AAir bag II (–)Driver’s air bag gas generator
28Not used
29Not used
Page 132 of 382

SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
X1614
FUSE DETAILS
0670.3
A2w
INSTRUMENT
CLUSTER
10) AIR BAG X16
23
.5 GE/SW.5 GE/BR
1 X7832
G5
DRIVER’S AIR BAG
GAS GENERATOR
C101
CONTACT RING
14
34
.35 BR/SW
6
GROUND
DISTRIBUTION
0670.4
5
FUSE DETAILS
0670.3 22P90
FRONT POWER
DISTRIBUTION BOX
10 11
F275A
7
.5 BR/VI
CA
X10018
F4115A
10
1 X9997
2
R
ABF+ ABF– 31THE DRIVER’S AND
PASSENGER’S
AND THE SIDE AIR
BAG GENERA-
TORS AND THE
PYROTECHNICAL
BELT TENSIONERS
AND THE BATTERY
SAFETY TERMINAL
ARE FITTED WITH
SHORTING
BRIDGES.THE BRIDGES SHORT
THE GENERATOR
LEADS TOGETHER TO
PREVENT UNINTEN-
TIONAL TRIGGERING
OF THE IGNITER
WHEN WORKING ON
THE AIR BAG SYSTEM.
X10017
X132537A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
X74
AWL
G6
PASSENGER’S AIR
BAG GAS
GENERATOR
33 40
3 X7824 .5 WS/SW
.5 WS/BR.5 BL.5 BR
1 X17702
G19
BATTERY SAFETY
TERMINAL
49 50
1 X104672 .5 BL.5 BR
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
X74
.5 GR/SW.5 GR/BR
34
26 27
34
ABF2+ ABF2–
13 14
12 .5 BL/SW
.5 BL/BR
G1
BATTERY
ABBF2+ ABBF2–ABBF+ ABBF–BPT+ BPT–
POWER
DISTRIBUTION
0670.2
50 RT
Z3 ROADSTER
LATE PRODUCTION7.5A
50 RT
Page 134 of 382
X2798X275778
56X2755X279
4
12
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
2
FUSE DETAILS
0670.3 14
X10017
F275A
X1714
.5 BL/VI/GE
1
GROUND
DISTRIBUTION
0670.4
X778
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
A2w
INSTRUMENT
CLUSTER
4
FUSE DETAILS
0670.3 22P90
FRONT POWER
DISTRIBUTION BOX
X10018
F4115A
X7783
S58
DRIVER’S SEAT
BELT SWITCH
3
GROUND
DISTRIBUTION
0670.4
X18518
X185181
S59
PASSENGER’S
SEAT BELT SWITCH
X748
.5 BR/GN/WS .5 BL/WS/GE 23 X16
7.5AZ3 ROADSTER
LATE PRODUCTION
Z3 ROADSTER
LATE PRODUCTION
Page 135 of 382
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
FUSE DETAILS
0670.3 24
P90
FRONT POWER
DISTRIBUTION BOXF425A
15 .5 WS/RT
3
A113
SEAT OCCUPANCY
DETECTOR
SBEX10218
2
1X10218
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
GROUND
DISTRIBUTION
0670.4
X10018
X74
12
X91009
I1008
SEAT MAT
FUSE DETAILS
0670.3 22
F417.5A
Z3 ROADSTER
LATE PRODUCTIONM VERSIONS AND
Z3 VERSIONS EAR-
LY PRODUCTION
Page 136 of 382

10/993450.1a2000
3
3450.1-013450.1-02
3450.1-00
Y1
ABS HYDRAULIC
UNITP90
FRONT POWER
DISTRIBUTION
BOX
K94
ENGINE CONTROL
RELAY (ABS/ASC)
A52
SLIP CONTROL
MODULE
(ABS/ASC)
48 X1175
TXD 46
2619302
S30
BRAKE LIGHT
SWITCH F49
50AF4615A
55
3450.1-03
53
M93
AUXILIARY
THROTTLE
POSITION MOTOR 3450.1-022339 43
R31
AUXILIARY
THROTTLE
POSITION
SENSOR 3450.1-02 67
10 36
B2
LEFT FRONT SPEED
SENSOR – ABS 3450.1-0412 13
B4
LEFT REAR
SPEED SENSOR –
ABS 3450.1-0414 15
B1
RIGHT FRONT SPEED
SENSOR – ABS 3450.1-0411 38
B3
RIGHT REAR SPEED
SENSOR – ABS 3450.1-0488778118
A6000
ENGINE CONTROL
MODULE (DME) 3450.1-08
76
3354275225634493151
F1030AF135A
S6
ASC SWITCH 3450.1-03
44
LIGHT SWITCH
DETAILS
6300.0
3450.1-03
58g
X1175
2035
3450.1-06
29 X117528
S31
PARK BRAKE
SWITCH 3450.1-02
P95
AUXILIARY FUSE
BOX
F3830A
P90
FRONT POWER
DISTRIBUTION
BOX
3450.1-02
A2w
INSTRUMENT
CLUSTER
M VERSIONS
37
ABS
7124
G6509
GENERATOR
F275A
K95
VALVE RELAY
(ABS/ASC) 3450.1-00
3450.1-00
1230.0 D +
3450.1 SLIP CONTROL (ABS/ASC)
Page 138 of 382

Pin Assignments
E = Input, A = Output, M = Ground
X1175
Pin Type Description/Function Connection
51
EVoltage supplyFuse 13
52ALeft front inlet valveABS hydraulic unit
53AVoltage supplyValve – Engine control relay
54Not used
55Not used
56ARight rear inlet valveABS hydraulic unit
57AActivate relayEngine control relay
58Not used
59Not used
60MSensor groundABS speed sensor, left front
61ESpeed signalABS speed sensor, right rear
62MSensor groundABS speed sensor, left rear
63ESpeed signalABS speed sensor, left rear
64MSensor groundABS speed sensor, right front
65ESpeed signalABS speed sensor, right front
66Not used
67Not used
68EEngine signal 1Engine control module (DME)
69ERelay activation feedbackEngine control relay
70ESpeed signalEngine control module (DME)
71Not used
72Not used
73AADS step motor (+)ADS step motor
74ECharge indicatorGenerator
75ALeft rear outlet valveABS hydraulic unit
76AShut-off valve (ASC)ABS hydraulic unit
77ARight front outlet valveABS hydraulic unit
78MGroundGround point
79MGroundGround point
80AABS lamp controlInstrument cluster