engine BMW Z3M COUPE 2001 E36 Electrical Troubleshooting Manual






Pin Assignments (Z3 Versions)




E = Input, A = Output, M = GroundPin ConnectionDescription/Function Signal Type
9
Not used
10Not used
11Not used
12Not used
13MT_LHV2Oxygen sensor heating groundOxygen sensor 2 (in front of
catalytic converter)
14EA_LSV1Sensor signalOxygen sensor 1 (in front of
catalytic converter)
15EA_LSV2Sensor signalOxygen sensor 2 (in front of
catalytic converter)
16EA_LSH1Sensor signalOxygen sensor 1 (behind catalytic
converter)
17Not used
18EA_LSH2Sensor signalOxygen sensor 2 (behind catalytic
converter)
19MT_LHH2Oxygen sensor heating groundOxygen sensor 2 (behind catalytic
converter)
20MM_LSV1Signal groundOxygen sensor 1 (in front of
catalytic converter)
21MM_LSV2Signal groundOxygen sensor 2 (in front of
catalytic converter)
22MM_LSH1Signal groundOxygen sensor 1 (behind catalytic
converter)
23AS_HRActivate relayEngine control module relay
24MM_LSH2Signal groundOxygen sensor 2 (behind catalytic
converter)
X60003
Pin Type Signal Description/Function Connection
1
EA_HFMSignal air mass meterHot film air mass meter
2EP_NWGA1Signal camshaft positionCamshaft position sensor 2 (outlet)
3Not used
4Not used






Pin Assignments (Z3 Versions)




E = Input, A = Output, M = GroundPin ConnectionDescription/Function Signal Type
5
EP_NWGE1Signal camshaft positionCamshaft position sensor 1 (inlet)
6Not used
7AU_DKGVoltage supplyElectrical gas actuator
8EP_KWGSignal crankshaft positionCrankshaft position sensor
9Not used
10EA_DKG2Throttle position signal 2Electrical gas actuator
11Not used
12Not used
13Not used
14Not used
15MM_NWGA1GroundCamshaft position sensor 2 (outlet)
16Not used
17MM_HFMGroundHot film air massmeter
18MM_NWGE1GroundCrankshaft position sensor 1 (inlet)
19EA_DKG1Throttle position signal 1Electrical gas actuator
20MM_DKGGroundElectrical gas actuator
21MM_KWGGroundCrankshaft position sensor
22EA_TANSTemperature signalIntake air temperature sensor
23MM_TANSGroundIntake air temperature sensor
24EA_TMOTTemperature signalEngine coolant temperature sensor
25MM_TMOTGroundEngine coolant temperature sensor
26Not used
27EA_TOELTemperature signalOil temperature sensor
28MM_TOELGroundOil temperature sensor
29EA_KS1ACyl. 1-3 knock sensorDouble knock sensor
30EA_KS1BCyl. 1-3 knock sensorDouble knock sensor
31EA_KS2ACyl. 4-6 knock sensorDouble knock sensor
32EA_KS2BCyl. 4-6 knock sensorDouble knock sensor
33AP_EVZ1Activate valveCyl. 1 fuel injection valve
34AP_EVZ2Activate valveCyl. 2 fuel injection valve
35AP_EVZ3Activate valveCyl. 3 fuel injection valve
36AP_EVZ4Activate valveCyl. 4 fuel injection valve



ENGINE CONTROL SYSTEM MS43 (6–CYLINDER M54)











2
1.5 RT
2.5 RT/WS/GE
4 RT/WS
23 7 X600017 X70001
4
G6400
B+ JUNCTION
POINT E–BOX
A6000
ENGINE CONTROL
MODULE (DME) 8530
87
A7000
TRANSMISSION
CONTROL MODULE
(EGS)
1 RTX64101
21
POWER
DISTRIBUTION
0670.2
F20130AF20230A5F20320A
P98
FUSE HOLDER IN
E–BOX
15
4
4 RT/WS
6X86802
8 X60001
15 15
2.5 RT/WS/GE 1.5 RT/WS
FUSE DETAILS
0670.3 X60002
.5 BR/WS
X6300
6
4 RT
X6300
5K6300
ENGINE CONTROL
MODULE RELAY
X641022
1
X8680
4 RT/WS
F20430A
15
8
1 RT/WS/GE
4 RT/WS/GE X64101
87
X6960
Z3 VERSIONS

1 RT/WS
1.5 SW/RT1.5 SW/WS1.5 SW/GE1.5 SW/BL1.5 SW/GN1.5 SW/VI
X6456
32











1 3 X6151
X61521
1 RT/WS1 RT/WS
3
3 X6152
2 1 9 8 7 X60005
T6151
CYL. 1 IGNITION
COIL
T6152
CYL. 2 IGNITION
COIL
A6000
ENGINE CONTROL
MODULE (DME) 1 RT/WS 1 RT/WS
X6151
2
2
X6153
X61532 1X61541 3 X61542T6154
CYL. 4 IGNITION
COIL
3 X6155
X61552 1
X61561 3 X6156
T6156
CYL. 6 IGNITION
COIL
T6153
CYL. 3 IGNITION
COILT6155
CYL. 5 IGNITION
COIL
1 BR1 BR
1 BR1 BR 1 BR
1 BR
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
313131313131
1 X6054
2.5 RT/WS 2.5 RT/WS/GE
240
2W
X6456X6456
R8554
RESISTOR240
2W240
2WR8554
RESISTORR8554
RESISTOR
X6969
1 RT/WS



ENGINE CONTROL SYSTEM MS43 (6–CYLINDER M54)
2











A6000
ENGINE CONTROL
MODULE (DME)
Y6106
CYL. 6 FUEL
INJECTION VALVE
–+ Y6101
CYL. 1 FUEL
INJECTION VALVE
–+Y6102
CYL. 2 FUEL
INJECTION VALVE
–+
Y6103
CYL. 3 FUEL
INJECTION VALVE
–+
Y6104
CYL. 4 FUEL
INJECTION
VA LV E –+
Y6105
CYL. 5 FUEL
INJECTION VALVE
–+
3334353638 X60003
1 X61011 X61031
X6105
1 X61061 X61041 X6102
2 X61022 X61042 X6106
2
X61052 X6103X6101
.75 BR/WS .75 BR/RT .75 BR/GE .75 BR/BL .75 BR/GN .75 BR/VI
37
313131313131
10
FUSE DETAILS
0670.3
F20530A
X8680
P98
FUSE HOLDER IN
E–BOX
.5 RT/GE .5 RT/GE .5 RT/GE .5 RT/GE .5 RT/GE .5 RT/GE
4
8530
87
X6327
6X6327
2K6327
INJECTION VALVES
RELAY
X6454
GROUND
DISTRIBUTION
0670.4
1X60001
A6000
ENGINE CONTROL
MODULE (DME)
86 8 5 GN
X60537
2.5 RT/GE
2.5 RT/GE
X6970
Z3 VERSIONS

46
4
FUSE DETAILS
0670.3
F20230A
X8680
P98
FUSE HOLDER IN
E–BOX
47











32 X6130
X62752
1 RT/WS/GE
1
40
41 42 52 49 X60003Y6130
IDLE SPEED
CONTROL VALVE
Y6275z
VARIABLE CAM-
SHAFT CONTROL
VALVE 1 (INLET)
A6000
ENGINE CONTROL
MODULE (DME) X6130X6276
2
X6120
2 1 X6120
Y6120
EVAPORATIVE
EMISSION VALVE2 X61631
X6167
12 X6167
Y6167
VALVE, INDIVIDUAL
CONTROL INTAKE
SYSTEM
Y6276
VARIABLE CAM-
SHAFT CONTROL
VALVE 2 (OUTLET)
.5 WS/GN
313131313131


ENGINE CONTROL SYSTEM MS43 (6–CYLINDER M54)
1
.5 WS/GE.5 GN/BLX6275
1 .5 RT/WS/GE
.5 GN/VIX6276
.5 RT/WS
.5 BR .5 RT/WS/GE .5 RT/WS/GE .5 RT/WS/GE
X6163
.5 BR/WS .5 BR/BLY6163
SECONDARY AIR
PUMP VALVE
Z3 VERSIONS

POWER
DISTRIBUTION
0670.2G7512
B+ JUNCTION
POINT


ENGINE CONTROL SYSTEM MS43 (6–CYLINDER M54)










32 X6304
K6304
SECONDARY AIR
PUMP RELAY
X61331X6133
2
Y6133
AIR PUMP
X6455
GROUND
DISTRIBUTION
0670.4
X63045
GROUND
DISTRIBUTION
0670.4
26
4 RT/GE
30
A6000
ENGINE CONTROL
MODULE (DME)
4
3 X60004
X24998
M119
LEAKAGE DIAGNO-
SIS PUMP
.75 BR/BL
1
20
.5 SW/GN
8
8
FUSE DETAILS
0670.3
F20430A
X8680
P98
FUSE HOLDER IN
E–BOX
.5 BR/WS
28
X783
24
2
.35 RT/GE
14X78
FUSE DETAILS
0670.3
F135A
P90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3
F4615A
1.5 BL/RTX1714
X1714
X181BRAKE LIGHTS
6325.06
X1001632X10018
S30
BRAKE LIGHT
SWITCH
1) BRAKE PEDAL
RELEASED
2) BRAKE PEDAL
DEPRESSED
3) BRAKE PEDAL
DEPRESSED
(TEST)
4) BRAKE PEDAL
RELEASED
(NORMAL) 21 34
.5 BL/RT
.35 BR/BL/GE
31
F10750A
X1982
X60538
.5 BR/WS
Z3 VERSIONS



ENGINE CONTROL SYSTEM MS43 (6–CYLINDER M54)










1 X62072
117.5 SW
.5 GE
B6207
HOT FILM AIR
MASS METER
A6000
ENGINE CONTROL
MODULE (DME)
.5 GE+–
3X6207
.5 RT/WS
45X60003
.5 GR/BR
6FUSE DETAILS
0670.3
F20320A
X8680
P98
FUSE HOLDER IN
E–BOX
21
.5 BR
8
12X6203
.5 RT/WS .5 RT/WS .5 RT/WS .5 RT/WS
3X6203
B6203
CRANKSHAFT
POSITION/RPM
SENSOR
.5 GE
18.5 BR
5
32X6214
1X6214
B6214
CAMSHAFT
POSITION SENSOR
1 (INLET)
.5 GE
15.5 BR
2
32X6224
1X6224
B6224
CAMSHAFT
POSITION SENSOR
2 (OUTLET)
1X6279
2X6279
B6279
THERMOSTAT,
CHARACTERISTIC
MAP COOLING
Z3 VERSIONS



ENGINE CONTROL SYSTEM MS43 (6–CYLINDER M54)











X65001
GROUND
DISTRIBUTION
0670.4
4 X6500
2 6 8 X6301
10X6301
4
2.5 GN/VI .35 SW/VI
M2
FUEL PUMP
A6000
ENGINE CONTROL
MODULE (DME)
K6301w
FUEL PUMP RELAY 

 


X60002
X13032
7221624 19 18
234 1
X62102
X62102
B62102
OXYGEN SENSOR
I (BEHIND
CATALYTIC
CONVERTER)
3 24 1
X62202
X62202
B62202
OXYGEN SENSOR
II (BEHIND
CATALYTIC
CONVERTER) .5 RT/WS
.5 SW .5 GE .5 SW.5 GE .5 BR
16
X100166
P90
FRONT POWER
DISTRIBUTION BOX
FUSE DETAILS
0670.3FUSE DETAILS
0670.3
F135AF1815A
.5 RT/WS
.5 BR
1201421 13 15
234 1
X62101
X62101
B62101
OXYGEN SENSOR
I (IN FRONT OF
CATALYTIC
CONVERTER)
3 24 1
X62201
X62201
B62201
OXYGEN SENSOR
II (IN FRONT OF
CATALYTIC
CONVERTER) .5 RT/WS
.5 SW .5 GE .5 SW.5 GE .5 BR
.5 BR
.5 RT/WS
X60004
X86808P98
FUSE HOLDER IN
E–BOX
FUSE DETAILS
0670.3
F20430A
Z3 VERSIONS

20











10
23 25 28 X60003
A6000
ENGINE CONTROL
MODULE (DME) X6205
21 X6205
B6205
INTAKE AIR
TEMPERATURE
SENSOR1 X6236
2 X623821 X6238
B6238
OIL TEMPERATURE
SENSOR
.5 BR/GR


ENGINE CONTROL SYSTEM MS43 (6–CYLINDER M54)
.5 BR/BL.5 GR/BR.5 GR .5 BR/RT .5 RT/BL
X6236
B6236
ENGINE COOLANT
TEMPERATURE
SENSOR
A6000
ENGINE CONTROL
MODULE (DME)
7
.5 BR/WS
19
.5 BR/VI
X63901246
53
.75 BR/SW .75 GR/WS27 44 4322 24
Y6390
ELECTRIC
THROTTLE
ACTUATOR
X60003
.5 GR/BR .5 GR/BR
X6390
Z3 VERSIONS