catalytic converter BMW M3 1998 E36 Electrical Troubleshooting Manual



%%&
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
157EA/C-ON-signalAir 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 SENSORS
 $%%



%%&


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
1210.20-001210.20-00
X600078
2
20
1210.20-00
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
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 (318is) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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
E10 . . REAR DEFOGGER/ANTENNA . . . . . . . . . . . in rear window
E11 . . . LEFT HIGH BEAM LIGHT . . . . . . . . . . . . . . . . near LH headlight assembly

E12 . .
RIGHT HIGH BEAM LIGHT . . . . . . . . . . . . . .
near RH headlight assembly



E13 . . LEFT LOW BEAM LIGHT . . . . . . . . . . . . . . . . near LH headlight assembly
E14 . . RIGHT LOW BEAM LIGHT . . . . . . . . . . . . . . . near RH headlight assembly




COMPONENT LOCATION CHART
;






 $%%%%&
COMP.8500.0 7100.0LOCATION DESCRIPTION
X18723 GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . below LH side of dash

X18741
(4 PINS, –––) . . . . . . . . . . . . . . . . . . . . . . . . . . .
center of dash MICROPHONE



X18797 (1 PIN, NATURAL) . . . . . . . . . . . . . . . . . . . . . . in RH rear side of luggage compartment
X18798 (1 PIN, NATURAL) . . . . . . . . . . . . . . . . . . . . . . in RH rear side of luggage compartment
X18994 (3 PINS, YELLOW) . . . . . . . . . . . . . . . . . . . . . . rear LH side of engine compartment below . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1
X19527 (16 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08-3
X19561
(6 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . .
on RH side of transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


05-3
X62001 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . under center of car (318is) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-1 07-2
X62002 (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . under center of car (318is) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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, NATURAL) . . . . . . . . . . . . . . . . . . . . . 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

S198
JET HEATER
THERMOSWITCH




COMPONENT LOCATION VIEWS $%%





%%&

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

X62001
X1148
318tds

X62002



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