heating BMW 318is 1998 E36 Electrical Troubleshooting Manual



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Pin Assignments
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E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
60
EProgramming voltageData link connector
61MOxygen sensor heating groundOxygen sensor (behind catalytic converter)
62AActivate valveSecondary air pump value
63ECyl. 4-6 knock sensorKnock sensor
64MGroundCamshaft position sensor
65ECamshaft positionCamshaft position sensor
66Not used
67MOxygen sensor signal groundOxygen sensor (in front of catalytic
converter)
68AActivate valveEvaporative emission valve
69AActivate relayFuel pump relay
70MOxygen sensor signal groundOxygen sensor (in front of catalytic
converter)
71MOxygen sensor signal groundOxygen sensor (behind catalytic converter)
72MOxygen sensor signal groundOxygen sensor (behind catalytic converter)
73EActivate relayEngine control module relay
74AActivate A/C compressorCompressor control relay
75ESensor signalOxygen sensor (in front of catalytic
converter)
76ESensor signalOxygen sensor (in front of catalytic
converter)
77ESensor signalOxygen sensor (behind catalytic converter)
78ESensor signalOxygen sensor (behind catalytic converter)
79MOxygen sensor heating groundOxygen sensor (behind catalytic converter)
80AASC signal ZASlip control module (ABS/ASC)
81AASC signal ZWVSlip control module (ABS/ASC)
82AASC signal MSRSlip control module (ABS/ASC)
83ESensor signalCrankshaft position/RPM sensor
84Not used
85E/ACAN-LOWTransmission control module (EGS)
86E/ACAN-HIGHTransmission control module (EGS)
87EBattery voltage, terminal 87Engine control module relay
88E/ATxD diagnosis data linkData link connector




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Pin Assignments
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E = Input, A = Output, M = Ground
X6000
Pin Type Description/Function Connection
89
MOxygen sensor heating groundOxygen sensor (behind catalytic converter)
90AActivate valveIdle speed control valve
91AActivate valveCyl. 1 fuel injection valve
92AActivate valveCyl. 4 fuel injection valve
93Not used
94MGround, fuel injection valve output stagesGround point
95Not used
96A“Check engine” indicator controlInstrument cluster
97Not used
98EDrive-away protection signalElectronic immobilizer control module
(EWS II)
99EActivate A/CPressure switch
100Not used
101Not used
102Not used
103Not used
104EIntake air temperatureIntake air temperature sensor
105MGroundHot film air mass meter
106Not used
107EOxygen sensor signalOxygen sensor (in front of catalytic
converter)
108ECrankshaft position/RPMCrankshaft position/RPM sensor
109ECamshaft positionHall effect camshaft sensor
11 0ACyl. 3 ignition coil controlCyl. 3 ignition coil
111ACyl. 4 ignition coil controlCyl. 4 ignition coil
11 2Not used
11 3Not used
11 4EBattery voltageB+ jump start junction point
11 5AEngine control module relay controlEngine control module relay, terminal 85
11 6MGround for electronics and shielding of
sensorsGround point



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Pin Assignments
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E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
11 7
AIdle speed control valve controlIdle speed control valve
11 8MOxygen sensor heating groundOxygen sensor (in front of catalytic
converter)
11 9AActivate valveCyl. 3 fuel injection valve
120AActivate valveCyl. 2 fuel injection valve
121Not used
122MGround, remaining output stages (except
for ignition and fuel injection valves)Ground point
123Not used
124AA/C compressor cut-outCompressor control relay
125Not used
126Not used
127Not used
128ECyl. 3-4 knock sensorKnock sensor
129Not used
130ETI-measurement signal (fuel consumption)Instrument cluster
131Not used
132EThrottle positionThrottle position sensor
133ESignal inputHot film air mass meter
134MSensor groundOxygen sensors
135Not used
136Not used
137ACyl. 1 ignition coil controlCyl. 1 ignition coil
138ACyl. 2 ignition coil controlCyl. 2 ignition coil
139Not used
140Not used
141AComponent supply (+)Throttle position sensor
142EBattery voltage from engine control module
relayEngine control module relay, terminal 87
143MGround, ignitionGround point
144EIgnition switch, terminal 15Ignition switch, terminal 15
145AActivate auxiliary fanNormal speed relay
146AActivate valveIntake air resonance changeover valve

.75 BR/GEX13252

5120.0 ZKE DOOR LOCK HEATING (TSH) $%%



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21
21
P90
FRONT POWER
DISTRIBUTION BOX
11
X495X132542S47
DRIVER’S DOOR
LOCK SWITCH
0) OFF
3) CENTRAL
ARREST
.5 WS/GN
.5 RT/GN1.5 BL/GR1.5 SW1.5 WS
3 2 1 6 X660
10 X1325213 14
2 X751
2 X747
10 X25714 13
ZKE CENTRAL
LOCKING (ZV)
5126.0
4X6605
X747
1X10015
14X1001810
X257
8
X751
1 X257
19
2 X752
2 X352.5 BR/RT/GE.35 WS/GN
X449
X13006X495
M12
DRIVER’S DOOR
LOCK MOTOR
1) LOCK
2) UNLOCK
.5 WS/SW
.35 WS/SW
S48
DRIVER’S DOOR
HANDLE SWITCH
1) HANDLE DOWN
2) HANDLE
LIFTED 1 X752
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4 1 X352
S14
DRIVER’S DOOR
JAMB SWITCH
1) DOOR OPEN
2) DOOR CLOSEDFUSE DETAILS
0670.3
.5 WS/RT
.35 WS/RT
.35 WS/RTFUSE DETAILS
0670.3
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
.75 BR/GE
GROUND
DISTRIBUTION
0670.4
F3525A
.5 BR/RT/GEX475
ZKE CENTRAL
LOCKING (ZV)
5126.0
X13253
3
.5 BR/GR/GE .5 BR/RT/GE
.5 BR/GR/GE
X443ANTI–THEFT
SYSTEM (ALPINE)
6575.2
1 2
31
30
POWER WINDOWS
(FH)
5133.1
E48
DOOR LOCK
HEATER
1 2
F75A
0 3
3131
30
.5 BR/RT/GE







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Pin Assignments
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E = Input, A = Output, M = Ground
X13252
Pin Type Description/Function Connection
1
EPower lock signalDoor lock motors
2AVoltage supplyAll lock motors
3APower supplyDoor lock heating
4EAutomatic interior light signalInterior light
5Not used
6AVoltage supplyPower window motor, driver’s door
7AVoltage supplyPower window motor, passenger’s door
8EPower supplyFront power distribution box, fuse 14
9ELock signalLock motor & luggage compartment lid
relay
10EPower supplyFront power distribution box, fuse 35
11AVoltage supplyInterior lights, engine compartment light,
glove box light
12EPower supplyFront power distribution box, fuse 33
13EMotor signalPower window motor, driver’s door
14EMotor signalPower window motor, passenger’s door
15MGroundGround
X13253
Pin Type Description/Function Connection
1
EPosition signalDoor lock motor, driver’s door
2EPosition signalDoor lock motor, passenger’s door
3ELock signal, luggage compartment lidLuggage compartment lid lock motor,
luggage compartment lid relay
4EData signalAnti-theft system control module (Alpine)
5Not used
6Not used
7ECrash signalInertia switch
8ERevolution signalPower window motor, driver’s door
9ERevolution signalPower window motor, passenger’s door

CENTRAL BODY ELECTRONICS (ZKE IV) $%%




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P90
FRONT POWER
DISTRIBUTION BOX


15
F3525A
INTERIOR LIGHTS
6330.3
GROUND
DISTRIBUTION
0670.410X13252
A104
BODY
ELECTRONICS
CONTROL MODULE
(ZKE IV)
10 X10018
.5 BR/WS
4
.75 RT/SW11
1.5 VI/SW2
2.5 BL/GR1
2.5 SW9 X13252
2.5 WS
10
.5 GN/BL
ZKE CENTRAL
LOCKING (ZV)
5126.0FUSE DETAILS
0670.3
X495
POWER WINDOWS
(FH)
5133.1
14 X1325426
.75 VI/SWX1325315 X10182
.5 SW/GN
DRIVE–AW AY
PROTECTION
(EWS II)
6135.0
LICENSE PLATE/
LUGGAGE
COMPARTMENT
LIGHTS
6320.0LICENSE PLATE/
LUGGAGE
COMPARTMENT
LIGHTS
6320.0
4
.5 BL/RT/GE
3
.75 BR/GE
ZKE DOOR LOCK
HEATING (TSH)
5120.0X13253

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6410.5 HEATING CONTROL (HR)
P90
FRONT POWER
DISTRIBUTION BOX S2
IGNITION SWITCH
0) OFF
1) ACCESSORY
2) RUN
3) START
7 X33
1 X209
2.5 GN
2.5 GN
X203
.35 GN
8POWER
DISTRIBUTION
0670.2
6
30
87 85
4 X58
2
GROUND
DISTRIBUTION
0670.42.5 GN/BR
2
X100176

31
1 X85
X853
X353
3 .5 BR/OR.5 GE/BRY4
WATER VALVE
ASSEMBLY
1
X899A32y
THERMOSTAT .5 GN/GEFUSE DETAILS
0670.3
X58K4
BLOWER RELAY
X173
2.5 GN/BR
X1001620
FUSE DETAILS
0670.3
.5 GE4 X35
.5 GN/GE
2
10
315
F2030AF235A
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