1999 BMW 323i catalytic converter




Pin Assignments





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, remaning output stages (except for
ingnition 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 change over valve




Pin Assignments





E = Input, A = Output, M = GroundPin ConnectionDescription/Function Type
147
Not used
148EProgramming voltageData link connector
149AActivate valveEvaporation emission valve
150Not used
151AActivate relayFuel pump relay
152ASecondary air pump valve controlSecondary air pump valve
153ACarbon canister valve controlCarbon canister valve
154AFuel changeover valveFuel changeover valve
155Not used
156ESignal above 80°CDouble temperature switch
157ESignal A/C onAir conditioning operating unit
158ECyl 1-2 knock sensorKnock sensor
159MGround for sensorsTemperature-/knock-/throttle
position-sensors
160EFuel tank pressureFuel tank pressure sensor
161Not used
162ETemperature signalEngine coolant temperature sensor
163Not used
164Not used
165EOxygen sensor signalOxygen sensor (behind catalytic converter)
166ECrankshaft position/RPMCrankshaft position/RPM sensor
167ESpeed signal right rearABS/ASC control module
168ACrankshaft RPM speed signal TDInstrument cluster
169Not used
170Not used
171EVehicle speed signalInstrument cluster
172Not used
173E/ACAN-LOWEGS/ASC control module
174E/ACAN-HIGHEGS/ASC control module
175ARxD diagnosis data lineData link connector
176E/ATxD diagnosis data lineData link connector

.5 GN
B62002
OXYGEN SENSOR
(BEHIND
CATALYTIC
CONVERTER)
X6200232
.5 GE
X62002
1 4
.5 BR .5 SW
.5 GN





FUEL PUMP, HEATED OXYGEN SENSOR, CRANKSHAFT SENSOR







ENGINE CONTROL SYSTEM (DME M5.2, 4–CYLINDER M44)
P90
FRONT POWER
DISTRIBUTION BOX
2.5 GN/VI
X6381
GROUND
DISTRIBUTION
0670.4X10016
15
X10016
16X20
13 2.5 GN/VI
M2
FUEL PUMP 6 X6301
8
X6301
4
K6301w
FUEL PUMP RELAY
X600063
A6000
ENGINE CONTROL
MODULE (DME) .5 BR/GN .5 RT/WS
30
8786
85
2.5 RT
X6382
1210.20-00
X600078
2
20
3046
19
21
X6203321
A6000
ENGINE CONTROL
MODULE (DME)
W6203
CRANKSHAFT
POSITION/RPM
SENSOR SHIELD
X620932
X6454
B6209
HALL EFFECT CAM-
SHAFT SENSOR
X62091
1210.20-00
B62001
OXYGEN
SENSOR (IN
FRONT OF
CATALYTIC
CONVERTER)
X6200132
.5 GE.35 RT/WS
X62001
4 1
.5 BR .5 SW
.35 SW .35 GE
W6203
CRANKSHAFT
POSITION/RPM
SENSOR SHIELD
B6203
CRANKSHAFT
POSITION/RPM
SENSOR
GROUND
DISTRIBUTION
0670.4GROUND
DISTRIBUTION
0670.4
155V (15)
3131313131
F1815A
1
31
1210.20-00
77
15
31
.5 GE

X8008
.75 SW
.35 SW .35 GE
FUSE DETAILS
0670.3
X13006




COMPONENT LOCATION CHART







COMP.8500.0 7100.0LOCATION DESCRIPTION
B6238 OIL TEMPERATURE SENSOR . . . . . . . . . . . LH side of engine

B6240
KNOCK SENSOR . . . . . . . . . . . . . . . . . . . . . . .
top front of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11-2



B6256

DUAL TEMPERATURE SENSOR
(COOLANT TEMPERATURE) . . . . . . . . . .
RH front of engine below intake manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11-1

B9508

PRESSURE SWITCH . . . . . . . . . . . . . . . . . . . .

front RH side of engine compartment near RH headlight assembly . . . . . . . . . . . . . .

09-3




B62001

OXYGEN SENSOR (IN FRONT OF
CATALYTIC CONVERTER) . . . . . . . . . . . . .
on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37-1




B62002

OXYGEN SENSOR (BEHIND CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . . . . . .
on catalytic converter (318i) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37-2




B62101

OXYGEN SENSOR I (IN FRONT OF
CATALYTIC CONVERTER) . . . . . . . . . . . . .
on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38-2



B62102

OXYGEN SENSOR I (BEHIND CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . . . . . .
on catalytic converter





B62201

OXYGEN SENSOR II (IN FRONT OF
CATALYTIC CONVERTER) . . . . . . . . . . . . .
on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38-2



B62202

OXYGEN SENSOR II (BEHIND CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . . . . . .
on catalytic converter



C101 . CONTACT RING . . . . . . . . . . . . . . . . . . . . . . . . top of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-2
C900 . SUPPRESSION FILTER . . . . . . . . . . . . . . . . . in upper RH C–pillar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-2
D100 . DATA LINK CONNECTOR . . . . . . . . . . . . . . . . rear RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-1
D110 . OBD II CONNECTOR . . . . . . . . . . . . . . . . . . . . below LH side of dash

E7 . . . .
LEFT HEADLIGHT . . . . . . . . . . . . . . . . . . . . . .
front LH side of engine compartment



E8 . . . . RIGHT HEADLIGHT . . . . . . . . . . . . . . . . . . . . . front RH side of engine compartment
E9 . . . . REAR DEFOGGER I . . . . . . . . . . . . . . . . . . . . in rear window




COMPONENT LOCATION CHART







COMP.8500.0 7100.0LOCATION DESCRIPTION
X19561 (6 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . on RH side of transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-3

X19564
(2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . .
in RH side of luggage compartment behind trim panel



X62001 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . under center of car (318i) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-1 07-2
X62002 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . under center of car (318i) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-2 07-2
X62101 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . top center of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3 07-2
X62102 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . under center of car on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07-2
X62201
(4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . .
top center of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15-3
07-2
X62202 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . under center of car on catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07-2
X90260 (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . RH side of steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04-3 01-1
X91009 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . under passenger’s seat
Y1 . . . . ABS HYDRAULIC UNIT . . . . . . . . . . . . . . . . . . rear LH side of engine compartment back of LH side shock tower . . . . . . . . . . . . . . . 16-2

Y1w . .

ABS HYDRAULIC UNIT . . . . . . . . . . . . . . . . . .

LH side of engine compartment




Y2 . . . . AIR CONDITIONING COMPRESSOR . . . . . front of engine
Y4 . . . . WATER VALVE ASSEMBLY . . . . . . . . . . . . . . rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-2
Y5 . . . . DRIVER’S SIDE MIRROR . . . . . . . . . . . . . . . . in upper LH front door

Y6 . . . .
PASSENGER’S SIDE MIRROR . . . . . . . . . . .
in upper RH front door



Y19 . . SHIFT–LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . center console RH side of gearshift selector
Y85 . . LH ROLLOVER PROTECTION ACTUATOR behind rear seats (Convertible) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02-3
Y86 . . RH ROLLOVER PROTECTION ACTUATOR behind rear seats (Convertible) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02-3
Y198 . EXHAUST GAS FLAP VALVE . . . . . . . . . . . . in LH rear side of luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-2

Y199 .

CARBON CANISTER VALVE . . . . . . . . . . . . .

in spare–wheel well . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14-3


Y6101 CYL. 1 FUEL INJECTION VALVE . . . . . . . . . RH front of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3

S198
JET HEATER
THERMOSWITCH




COMPONENT LOCATION VIEWS







B62002
OXYGEN SENSOR
(BEHIND
CATALYTIC
CONVERTER)B62001
OXYGEN SENSOR
(IN FRONT OF
CATALYTIC
CONVERTER)

X62001
X1148X62002




B62201
OXYGEN SENSOR
II (IN FRONT OF
CATALYTIC
CONVERTER)




COMPONENT LOCATION VIEWS







E35
DRIVER’S MAKE–
UP MIRROR LIGHT
A836
ELECTRONIC
IMMOBILIZER
CONTROL MODULE
(EWS II) B62101
OXYGEN SENSOR I
(IN FRONT OF
CATALYTIC
CONVERTER)
X381X401
X1659


S77
DRIVER’S MAKE–
UP MIRROR
SWITCH