ground BMW M3 1999 E36 Electrical Troubleshooting Manual




Pin Assignments


E = Input, A = Output, M = Ground
X74
Pin Type Description/Function Connection
1
APyrotechnical belt tensionerDriver’s side pyrotechnical belt tensioner
2APyrotechnical belt tensionerDriver’s side pyrotechnical belt tensioner
3APyrotechnical belt tensionerPassenger’s side pyrotechnical belt
tensioner
4APyrotechnical belt tensionerPassenger’s side pyrotechnical belt
tensioner
5EPower supplyFront power distribution box, fuse 42
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
26Not used
27Not used
28Not used
29Not used



Pin Assignments


E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
30
Not used
31Not used
32Not used
33Not used
34ACrash signalBody electronics control module (ZKE IV)
35Not used
36Not used
37Not used
38Not used
39Not used
40Not used
41Not used
42Not used
43Not used
44Not used
45Not used
46Not used
47Not used
48Not used
49Not used
50Not used

SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)




A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
FUSE DETAILS
0670.3
.35 WS/BL
P90
FRONT POWER
DISTRIBUTION BOX
X1001824
20
G14
LEFT SIDE AIR BAG
GAS GENERATOR
16 17
.5 BL .5 BR
1
2 X1885B78
DRIVER’S SIDE IM-
PACT SENSOR
F427.5A
.5 GE
33
B79
PASSENGER’S
SIDE IMPACT
SENSOR
1
7
.35 VI/GN
X1885
GROUND
DISTRIBUTION
0670.4.5 GE
25 26
.5 BR
12
.5 BR
12
G15
RIGHT SIDE AIR
BAG GAS
GENERATOR
1819
.5 GE .5 BR
25 26
.5 BR
12
.5 BR
12
.5 BL
.5 BLX257
X11335
X1883
X256
X11336
X1884
6 X74
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
X13253
.35 BR/SW
34 X74.35 VI/GN
2 X1886
X1886GROUND
DISTRIBUTION
0670.4
X7421 .35 WS/GE
X13009
THE DRIVER’S AND
PASSENGER’S AND
SIDE AIR BAG GEN-
ERATORS ARE
FITTED WITH
SHORTING
BRIDGES.THE BRIDGES
SHORT THE
GENERATOR
LEADS TOGETHER
TO PREVENT
UNINTENTIONAL
TRIGGERING OF
THE IGNITER
WHEN WORKING
ON THE AIR BAG
SYSTEM.
X13009
X1441
GROUND
DISTRIBUTION
0670.4


SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)





F427.5A
8
A2w
INSTRUMENT
CLUSTER
P90
FRONT POWER
DISTRIBUTION BOXF275A
14
.35 VI/GN14 X17
X10017
FUSE DETAILS
0670.3
23 X16
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
.5 BL/RT/WS.5 BL/VI/GE
X1315
24X10018
FUSE DETAILS
0670.3
43 X18518
1 X18518
S59
PASSENGER’S
SEAT BELT SWITCH
3
12X74
.5 BL/GN/GE
4X7782
S58
DRIVER’S SEAT
BELT SWITCH
1X778
GROUND
DISTRIBUTION
0670.4
X13009
.35 VI/GN
GROUND
DISTRIBUTION
0670.4
.5 BL/VI/GE







X102181
3
12
15 X74
2 X10218
X13009
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULEGROUND
DISTRIBUTION
0670.4
A113
SEAT OCCUPANCY
DETECTOR
I1008
SEAT MAT X91009
FUSE DETAILS
0670.3
24 X10018
.5 WS/RT
F427.5AP90
FRONT POWER
DISTRIBUTION BOX

SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)






Pin Assignments

323i, 328i, M3





E = Input, A = Output, M = Ground
X1171
Pin Type Description/Function Connection
1
MGroundGround
2EBattery voltageABS relay
3MGroundGround
4EIgnition cut-off signalDME module
5AEML signalDME module
6ATransmission influenceTransmission control module
7E/ATxD signalDiagnostic link
8ARxD signalDiagnostic link
9Not used
10ASensor groundABS speed sensor rear right
11ASensor groundABS speed sensor front right
12Not used
13AABS power protection relayABS power protection relay
14EPedal travel sensorPedal travel sensor
15ARight rear speed signalDME module
16EPlus supplyABS relay
17ASolenoid valve signal left rear inletABS hydraulic unit
18ASolenoid valve signal left rear outletABS hydraulic unit
19MGroundGround
20AADS step motor (–)ADS step motor
21AADS step motor (+)ADS step motor
22ASolenoid valve signal right front inletABS hydraulic unit
23EASC throttle flap potentiometer (–)ASC throttle flap motor potentiometer
24Not used
25EIdle speed signalDME module
26AThrottle flap positionDME module
27EASC switch signalASC witch
28Not used
29ASensor groundABS speed sensor rear left
30ASensor groundABS speed sensor front left




Pin Assignments

323i, 328i, M3





E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
31
EPedal travel sensorPedal travel sensor
32EBrake signalBrake light switch
33EPlus supplyABS relay
34AABS lamp controlInstrument cluster
35EIgnition signalFuse 21
36ASeparator valveABS hydraulic unit
37ASolenoid valve signal right front outletABS hydraulic unit
38Not used
39ARight rear inlet valveABS hydraulic unit
40ASolenoid valve signal left front inletABS hydraulic unit
41ESpeed signalDME module
42EASC throttle flap potentiometer (+)ASC throttle flap potentiometer
43EASC throttle flap signalASC throttle flap potentiometer
44AASC lamp controlInstrument cluster
45ESpeed sensor signal rear rightSpeed sensor rear right
46ESpeed sensor signal rear leftSpeed sensor rear left
47ESpeed sensor signal front rightSpeed sensor front right
48ESpeed sensor signal front leftSpeed sensor front left
49EPump motor sensor signalABS hydraulic unit
50EShield pump motor sensorABS hydraulic unit
51EPlus supplyFront power distribution box
52AABS pump motor relayABS pump motor relay
53Not used
54ASolenoid valve signal left front outletABS hydraulic unit
55ARight rear outlet valveABS hydraulic unit




Pin Assignments

318i





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
70ESignal pump motorABS 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



Pin Assignments

318i





E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
86
ASignal ABSABS pump motor relay/Hydraulic unit
87ESpeed signalLeft front speed sensor ABS
88ESpeed signalRight front speed sensor ABS
89ESpeed signalLeft rear speed sensor ABS
90ESpeed signalRight rear speed sensor ABS
91E/ATxD diagnostic data linkData link connector
92ASpeed signal right rearDME module
93Not used
94ESignal ASCASC switch
95ESlip control system warning lampSlip control module (ASC)
96MGroundGround point
97ASignal ASCInstrument cluster
X11395
Pin Type Description/Function Connection
1
AADS step motor (+)ADS step motor
2MGroundGround point
3AADS step motor (–)ADS step motor
4EVoltage supplyFuse 38
5ASignal ABSABS hydraulic unit

X1161
2
X1165
X11393

SLIP CONTROL (ABS/ASC)






K125
ABS PUMP MOTOR
RELAY, TIMED
21


3450.1-01
.5 RT/BL/GE
32X10018
1 X78
.5 GR/SW/GE
X181
1.5 BL/RT
2X1001720X1001514X1001716X10018
11
2 X78
685X54
692
429 X54
48 X11393
23 X16
32
BRAKE LIGHTS
6325.0
X1164
.5 BR/SW
351333
X1171
2.5 RT/BL/GE
.5 GN/BL/GE
.75 BL/RT.5 GN/BL/GE
A52
SLIP CONTROL
MODULE
(ABS/ASC) S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
2.5 RT/BL/GE
X195
.5 GR/SW/GE
.5 BR/GR2.5 RT/GN/GE
.5 GR/SW/GE
X1166
K10
ABS RELAYA2w
INSTRUMENT
CLUSTERP90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3
GROUND
DISTRIBUTION
0670.4FUSE DETAILS
0670.3
2.5 RT/BL/GEGROUND
DISTRIBUTION
0670.4
F4615AF215AF1030AF275AF3830A
.5 BL/BR12 X17
X10100.5 BL/BR3450.1-01
V7
ASC DIODE
.5 RT/BL/GE 2.5 RT/BL/GE
21 X10099
1 X10098
.5 BL/BR
FUSE DETAILS
0670.3 FUSE DETAILS
0670.3 FUSE DETAILS
0670.3
2.5 RT/BL/GE
323i, 328i, M3
16
2.5 RT/BL/GE
S29
BRAKE LIGHT
SWITCH
1) NORMAL
STATE
2) BRAKE PEDAL
DEPRESSEDX116
X173
21GROUND
DISTRIBUTION
0670.4
31
WITH EGS