2001 BMW Z3M COUPE Electrical Troubleshooting Manual







A2w
INSTRUMENT
CLUSTER
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
20
A113
SEAT OCCUPANCY
DETECTOR 3234.0-03
F417.5A
2112
F275AP90
FRONT POWER
DISTRIBUTION BOX
34X74
X74
159
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
8
G6
PASSENGER’S AIR
BAG GAS
GENERATOR
13 14
3234.0-00G5
DRIVER’S AIR BAG
GAS GENERATOR
C101
CONTACT RING
10 11
G14
LEFT SIDE AIR BAG
GAS GENERATOR
16 17
3234.0-01G15
RIGHT SIDE AIR
BAG GAS
GENERATOR
18 19
3234.0-01G12
DRIVER’S SIDE
PYROTECHNICAL
BELT TENSIONER
12
3234.0-01G13
PASSENGER’S
SIDE
PYROTECHNICAL
BELT TENSIONER
34
3234.0-01
B78
DRIVER’S SIDE IM-
PACT SENSORB79
PASSENGER’S
SIDE IMPACT
SENSORS59
PASSENGER’S
SEAT BELT SWITCHS58
DRIVER’S SEAT
BELT SWITCH
57
3234.0-01 3234.0-013234.0-023234.0-023234.0-03 3234.0-00
D100
DATA LINK
CONNECTOR 3234.0-00
3234.0-006
3234.0-000670.5
TXD
I1008
SEAT MAT 3234.0-03
33 4026 27
G19
BATTERY SAFETY
TERMINAL
49 50
3234.0-00
POWER
DISTRIBUTION
0670.2
G1
BATTERY
3234.0 SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)







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







Pin Assignments




E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
30
Not used
31Not used
32Not used
33AAir bag II (+)Passenger’s air bag gas generator
34ACrash signalBody electronics control module (ZKE IV)
35Not used
36Not used
37Not used
38Not used
39Not used
40AAir bag II (–)Passenger’s air bag gas generator
41Not used
42Not used
43Not used
44Not used
45Not used
46Not used
47Not used
48Not used
49ABattery safety terminal (+)Battery safety terminal
50ABattery safety terminal (–)Battery safety terminal



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
F417.5A
10
1 X9997
2
R
ABF+ ABF– 31THE DRIVER’S AND
PASSENGER’S AND
THE SIDE AIR BAG
GENERATORS 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
50 RT

.5 BL.5 GE


SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
SIDE AIR BAG










A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
.35 WS/BL
20
G14
LEFT SIDE AIR BAG
GAS GENERATOR
16 17
.5 BL .5 BR
1
B78
DRIVER’S SIDE IM-
PACT SENSOR
.5 GE
33
B79
PASSENGER’S
SIDE IMPACT
SENSOR
1X1885
GROUND
DISTRIBUTION
0670.4
25 26
.5 BR
12
G15
RIGHT SIDE AIR
BAG GAS
GENERATOR
1819
.5 GE .5 BR
25 26
.5 BR
12
.5 BLX257
X1883
X256
X1884
X1886
GROUND
DISTRIBUTION
0670.4
21 .35 WS/GE
X1441
THE DRIVER’S AND
PASSENGER’S AND
THE SIDE AIR BAG
GENERATORS AND
THE PYROTECHNICAL
BELT TENSIONERS
AND THE BATTERY
SAFETY TERMINAL
ARE FITTED WITH
SHORTING BRIDGES.
.5 RT
G12
DRIVER’S SIDE
PYROTECHNICAL
BELT TENSIONER
12
.5 GE/RT .5 GE/BR
910
.5 SW
1 2
X275
X10216
THE BRIDGES SHORT
THE GENERATOR
LEADS TOGETHER TO
PREVENT UNINTEN-
TIONAL TRIGGERING
OF THE IGNITER
WHEN WORKING ON
THE AIR BAG SYSTEM.
X1441
.5 RT
G13
PASSENGER’S
SIDE
PYROTECHNICAL
BELT TENSIONER
34
.5 BL/RT .5 BL/BR
910
.5 SW
21
X279
X10217
X74
DATA LINK
0670.5
X749
.5 WS/VI
LATE PRODUCTION

5
12


SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)











6
FUSE DETAILS
0670.3 14




X10017
F275A
X1714
.5 BL/VI/GE
8
GROUND
DISTRIBUTION
0670.4
X275
A12
SUPPLEMENTAL
RESTRAINT
SYSTEM CONTROL
MODULE
A2w
INSTRUMENT
CLUSTER
5
FUSE DETAILS
0670.3 22P90
FRONT POWER
DISTRIBUTION BOX
X10018
F417.5A
X2757
S58
DRIVER’S SEAT
BELT SWITCH




7
GROUND
DISTRIBUTION
0670.4
X279
X2798
S59
PASSENGER’S
SEAT BELT SWITCH
X748
.5 BR/GN/WS .5 BL/WS/GE 23 X16



SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)











FUSE DETAILS
0670.3 22
P90
FRONT POWER
DISTRIBUTION BOXF417.5A
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
18 X279
.5 WS/RT







F215A
3450.1-01P90
FRONT POWER
DISTRIBUTION BOX
A52
SLIP CONTROL
MODULE
(ABS/ASC)
13 X1170
8 X1170
TXD 7

F275A
A2w
INSTRUMENT
CLUSTER
S30
BRAKE LIGHT
SWITCH F10
30AF4615A
3450.1-00
3450.1-00
12
B2
LEFT FRONT SPEED
SENSOR – ABS 3450.1-025 6
B4
LEFT REAR SPEED
SENSOR – ABS 3450.1-0219 20
B1
RIGHT FRONT SPEED
SENSOR – ABS 3450.1-0223 22
B3
RIGHT REAR SPEED
SENSOR – ABS 3450.1-02211110
A6000
ENGINE CONTROL
MODULE (DME) 3450.1-01A2w
INSTRUMENT
CLUSTER 3450.1-01
9
F215A
S6
ASC SWITCH 3450.1-01
14
LIGHT SWITCH
DETAILS
6300.0
1643450.1-00
58g
X1170
24
F3830A
25
3450.1 SLIP CONTROL (ABS/ASC)