wiring INFINITI FX35 2004 Service Manual

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Revision: 2004 November 2004 FX35/FX45Wiring Diagram .................................................... 839
Diagnostic Procedure ........................................... 840
Component Inspection ......................................... 841
Removal and Installation ...................................... 841
DTC P0117, P0118 ECT SENSOR ......................... 842
Component Description ........................................ 842
On Board Diagnosis Logic ................................... 842
DTC Confirmation Procedure ............................... 843
Wiring Diagram .................................................... 844
Diagnostic Procedure ........................................... 845
Component Inspection ......................................... 846
Removal and Installation ...................................... 847
DTC P0122, P0123 TP SENSOR ........................... 848
Component Description ........................................ 848
CONSULT-II Reference Value in Data Monitor Mode
. 848
On Board Diagnosis Logic ................................... 848
DTC Confirmation Procedure ............................... 849
Wiring Diagram .................................................... 850
Diagnostic Procedure ........................................... 851
Component Inspection ......................................... 854
Removal and Installation ...................................... 854
DTC P0125 ECT SENSOR ..................................... 855
Component Description ........................................ 855
On Board Diagnosis Logic ................................... 855
DTC Confirmation Procedure ............................... 856
Diagnostic Procedure ........................................... 856
Component Inspection ......................................... 857
Removal and Installation ...................................... 857
DTC P0127 IAT SENSOR ....................................... 858
Component Description ........................................ 858
On Board Diagnosis Logic ................................... 858
DTC Confirmation Procedure ............................... 858
Diagnostic Procedure ........................................... 859
Component Inspection ......................................... 860
Removal and Installation ...................................... 860
DTC P0128 THERMOSTAT FUNCTION ................ 861
On Board Diagnosis Logic ................................... 861
DTC Confirmation Procedure ............................... 861
Diagnostic Procedure ........................................... 861
Component Inspection ......................................... 862
Removal and Installation ...................................... 862
DTC P0132, P0152 HO2S1 .................................... 863
Component Description ........................................ 863
CONSULT-II Reference Value in Data Monitor Mode
. 863
On Board Diagnosis Logic ................................... 863
DTC Confirmation Procedure ............................... 864
Wiring Diagram .................................................... 865
Diagnostic Procedure ........................................... 868
Component Inspection ......................................... 870
Removal and Installation ...................................... 871
DTC P0133, P0153 HO2S1 .................................... 872
Component Description ........................................ 872
CONSULT-II Reference Value in Data Monitor Mode
. 872
On Board Diagnosis Logic ................................... 872
DTC Confirmation Procedure ............................... 873
Overall Function Check ........................................ 874Wiring Diagram .....................................................875
Diagnostic Procedure ...........................................878
Component Inspection ..........................................882
Removal and Installation ......................................883
DTC P0134, P0154 HO2S1 .....................................884
Component Description ........................................884
CONSULT-II Reference Value in Data Monitor Mode
.884
On Board Diagnosis Logic ....................................884
DTC Confirmation Procedure ...............................885
Overall Function Check ........................................886
Wiring Diagram .....................................................887
Diagnostic Procedure ...........................................890
Component Inspection ..........................................892
Removal and Installation ......................................893
DTC P0138, P0158 HO2S2 .....................................894
Component Description ........................................894
CONSULT-II Reference Value in Data Monitor Mode
.894
On Board Diagnosis Logic ....................................894
DTC Confirmation Procedure ...............................895
Wiring Diagram .....................................................896
Diagnostic Procedure ...........................................899
Component Inspection ..........................................901
Removal and Installation ......................................902
DTC P0139, P0159 HO2S2 .....................................903
Component Description ........................................903
CONSULT-II Reference Value in Data Monitor Mode
.903
On Board Diagnosis Logic ....................................903
DTC Confirmation Procedure ...............................904
Overall Function Check ........................................904
Wiring Diagram .....................................................906
Diagnostic Procedure ...........................................909
Component Inspection ..........................................912
Removal and Installation ......................................913
DTC P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION ..............................................................914
On Board Diagnosis Logic ....................................914
DTC Confirmation Procedure ...............................914
Wiring Diagram .....................................................916
Diagnostic Procedure ...........................................918
DTC P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION ..............................................................923
On Board Diagnosis Logic ....................................923
DTC Confirmation Procedure ...............................923
Wiring Diagram .....................................................925
Diagnostic Procedure ...........................................927
DTC P0181 FTT SENSOR ......................................931
Component Description ........................................931
On Board Diagnosis Logic ....................................931
DTC Confirmation Procedure ...............................931
Wiring Diagram .....................................................933
Diagnostic Procedure ...........................................934
Component Inspection ..........................................936
Removal and Installation ......................................936
DTC P0182, P0183 FTT SENSOR ..........................937
Component Description ........................................937
On Board Diagnosis Logic ....................................937

EC-10Revision: 2004 November 2004 FX35/FX45DTC Confirmation Procedure ...............................937
Wiring Diagram .....................................................938
Diagnostic Procedure ...........................................939
Component Inspection ..........................................941
Removal and Installation ......................................941
DTC P0222, P0223 TP SENSOR ............................942
Component Description ........................................942
CONSULT-II Reference Value in Data Monitor Mode
.942
On Board Diagnosis Logic ....................................942
DTC Confirmation Procedure ...............................943
Wiring Diagram .....................................................944
Diagnostic Procedure ...........................................945
Component Inspection ..........................................948
Removal and Installation ......................................948
DTC P0300 - P0308 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 8 CYLINDER MISFIRE .....................949
On Board Diagnosis Logic ....................................949
DTC Confirmation Procedure ...............................949
Diagnostic Procedure ...........................................950
DTC P0327, P0328, P0332, P0333 KS ...................955
Component Description ........................................955
On Board Diagnosis Logic ....................................955
DTC Confirmation Procedure ...............................955
Wiring Diagram .....................................................956
Diagnostic Procedure ...........................................957
Component Inspection ..........................................959
Removal and Installation ......................................959
DTC P0335 CKP SENSOR (POS) ..........................960
Component Description ........................................960
CONSULT-II Reference Value in Data Monitor Mode
.960
On Board Diagnosis Logic ....................................960
DTC Confirmation Procedure ...............................960
Wiring Diagram .....................................................961
Diagnostic Procedure ...........................................962
Component Inspection ..........................................964
Removal and Installation ......................................965
DTC P0340 CAMSHAFT POSITION (CMP) SEN-
SOR (PHASE) .........................................................966
Component Description ........................................966
On Board Diagnosis Logic ....................................966
DTC Confirmation Procedure ...............................966
Wiring Diagram .....................................................967
Diagnostic Procedure ...........................................968
Component Inspection ..........................................970
Removal and Installation ......................................970
DTC P0420, P0430 THREE WAY CATALYST FUNC-
TION ........................................................................971
On Board Diagnosis Logic ....................................971
DTC Confirmation Procedure ...............................971
Overall Function Check ........................................972
Diagnostic Procedure ...........................................973
DTC P0441 EVAP CONTROL SYSTEM .................976
System Description ...............................................976
On Board Diagnosis Logic ....................................976
DTC Confirmation Procedure ...............................976
Overall Function Check ........................................977
Diagnostic Procedure ...........................................978DTC P0442 EVAP CONTROL SYSTEM .................981
On Board Diagnosis Logic ....................................981
DTC Confirmation Procedure ................................982
Diagnostic Procedure ............................................983
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ......................990
Description ............................................................990
CONSULT-II Reference Value in Data Monitor Mode
.990
On Board Diagnosis Logic ....................................991
DTC Confirmation Procedure ................................991
Wiring Diagram .....................................................992
Diagnostic Procedure ............................................994
Component Inspection ..........................................995
Removal and Installation .......................................996
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE ......................................................................997
Component Description ........................................997
CONSULT-II Reference Value in Data Monitor Mode
.997
On Board Diagnosis Logic ....................................997
DTC Confirmation Procedure ................................998
Wiring Diagram .....................................................999
Diagnostic Procedure ...........................................1000
Component Inspection .........................................1002
DTC P0451 EVAP CONTROL SYSTEM PRESSURE
SENSOR .................................................................1004
Component Description .......................................1004
CONSULT-II Reference Value in Data Monitor Mode
1004
On Board Diagnosis Logic ...................................1004
DTC Confirmation Procedure ...............................1005
Diagnostic Procedure ...........................................1005
Component Inspection .........................................1006
DTC P0452 EVAP CONTROL SYSTEM PRESSURE
SENSOR .................................................................1007
Component Description .......................................1007
CONSULT-II Reference Value in Data Monitor Mode
1007
On Board Diagnosis Logic ...................................1007
DTC Confirmation Procedure ...............................1008
Wiring Diagram ....................................................1009
Diagnostic Procedure ...........................................1010
Component Inspection .........................................1013
DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR .................................................................1014
Component Description .......................................1014
CONSULT-II Reference Value in Data Monitor Mode
1014
On Board Diagnosis Logic ...................................1014
DTC Confirmation Procedure ...............................1015
Wiring Diagram ....................................................1016
Diagnostic Procedure ...........................................1017
Component Inspection .........................................1021
DTC P0455 EVAP CONTROL SYSTEM ................1022
On Board Diagnosis Logic ...................................1022
DTC Confirmation Procedure ...............................1023
Diagnostic Procedure ...........................................1024

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Revision: 2004 November 2004 FX35/FX45DTC P0456 EVAP CONTROL SYSTEM ...............1030
On Board Diagnosis Logic ..................................1030
DTC Confirmation Procedure ..............................1031
Overall Function Check .......................................1032
Diagnostic Procedure ..........................................1033
DTC P0460 FUEL LEVEL SENSOR .....................1040
Component Description .......................................1040
On Board Diagnosis Logic ..................................1040
DTC Confirmation Procedure ..............................1040
Diagnostic Procedure ..........................................1041
Removal and Installation .....................................1041
DTC P0461 FUEL LEVEL SENSOR .....................1042
Component Description .......................................1042
On Board Diagnosis Logic ..................................1042
Overall Function Check .......................................1042
Diagnostic Procedure ..........................................1043
Removal and Installation .....................................1043
DTC P0462, P0463 FUEL LEVEL SENSOR CIR-
CUIT .......................................................................1044
Component Description .......................................1044
On Board Diagnosis Logic ..................................1044
DTC Confirmation Procedure ..............................1044
Diagnostic Procedure ..........................................1045
Removal and Installation .....................................1045
DTC P0500 VSS ....................................................1046
Description ..........................................................1046
On Board Diagnosis Logic ..................................1046
DTC Confirmation Procedure ..............................1046
Overall Function Check .......................................1047
Diagnostic Procedure ..........................................1047
DTC P0506 ISC SYSTEM ......................................1048
Description ..........................................................1048
On Board Diagnosis Logic ..................................1048
DTC Confirmation Procedure ..............................1048
Diagnostic Procedure ..........................................1049
DTC P0507 ISC SYSTEM ......................................1050
Description ..........................................................1050
On Board Diagnosis Logic ..................................1050
DTC Confirmation Procedure ..............................1050
Diagnostic Procedure ..........................................1051
DTC P0550 PSP SENSOR ....................................1052
Component Description .......................................1052
CONSULT-II Reference Value in Data Monitor Mode
1052
On Board Diagnosis Logic ..................................1052
DTC Confirmation Procedure ..............................1052
Wiring Diagram ...................................................1053
Diagnostic Procedure ..........................................1054
Component Inspection ........................................1056
Removal and Installation .....................................1056
DTC P0605 ECM ...................................................1057
Component Description .......................................1057
On Board Diagnosis Logic ..................................1057
DTC Confirmation Procedure ..............................1057
Diagnostic Procedure ..........................................1058
DTC P1065 ECM POWER SUPPLY ......................1060
Component Description .......................................1060
On Board Diagnosis Logic ..................................1060
DTC Confirmation Procedure ..............................1060Wiring Diagram ....................................................1061
Diagnostic Procedure ..........................................1062
DTC P1102 MAF SENSOR ....................................1064
Component Description .......................................1064
CONSULT-II Reference Value in Data Monitor Mode
1064
On Board Diagnosis Logic ...................................1064
DTC Confirmation Procedure ..............................1065
Wiring Diagram ....................................................1066
Diagnostic Procedure ..........................................1067
Component Inspection .........................................1069
Removal and Installation .....................................1069
DTC P1111, P1136 IVT CONTROL SOLENOID
VALVE ....................................................................1070
Component Description .......................................1070
CONSULT-II Reference Value in Data Monitor Mode
1070
On Board Diagnosis Logic ...................................1070
DTC Confirmation Procedure ..............................1070
Wiring Diagram ....................................................1071
Diagnostic Procedure ..........................................1074
Component Inspection .........................................1076
Removal and Installation .....................................1076
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................1077
Component Description .......................................1077
On Board Diagnosis Logic ...................................1077
DTC Confirmation Procedure ..............................1077
Diagnostic Procedure ..........................................1078
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION .............................................................1079
Description ...........................................................1079
On Board Diagnosis Logic ...................................1079
DTC Confirmation Procedure ..............................1079
Wiring Diagram ....................................................1080
Diagnostic Procedure ..........................................1081
Component Inspection .........................................1084
Removal and Installation .....................................1084
DTC P1124, P1126 THROTTLE CONTROL MOTOR
RELAY ....................................................................1085
Component Description .......................................1085
CONSULT-II Reference Value in Data Monitor Mode
1085
On Board Diagnosis Logic ...................................1085
DTC Confirmation Procedure ..............................1085
Wiring Diagram ....................................................1087
Diagnostic Procedure ..........................................1088
DTC P1128 THROTTLE CONTROL MOTOR ........1090
Component Description .......................................1090
On Board Diagnosis Logic ...................................1090
DTC Confirmation Procedure ..............................1090
Wiring Diagram ....................................................1091
Diagnostic Procedure ..........................................1092
Component Inspection .........................................1093
Removal and Installation .....................................1094
DTC P1140, P1145 IVT CONTROL POSITION SEN-
SOR ........................................................................1095
Component Description .......................................1095
CONSULT-II Reference Value in Data Monitor Mode

EC-12Revision: 2004 November 2004 FX35/FX451095
On Board Diagnosis Logic ...................................1095
DTC Confirmation Procedure ..............................1095
Wiring Diagram ....................................................1096
Diagnostic Procedure ..........................................1099
Component Inspection .........................................11 0 2
Removal and Installation .....................................11 0 2
DTC P1143, P1163 HO2S1 ....................................110 3
Component Description .......................................11 0 3
CONSULT-II Reference Value in Data Monitor Mode
11 0 3
On Board Diagnosis Logic ...................................11 0 3
DTC Confirmation Procedure ..............................11 0 4
Overall Function Check .......................................11 0 5
Diagnostic Procedure ..........................................11 0 5
Component Inspection .........................................11 0 7
Removal and Installation .....................................11 0 8
DTC P1144, P1164 HO2S1 ....................................110 9
Component Description .......................................11 0 9
CONSULT-II Reference Value in Data Monitor Mode
11 0 9
On Board Diagnosis Logic ...................................11 0 9
DTC Confirmation Procedure ..............................111 0
Overall Function Check .......................................1111
Diagnostic Procedure ..........................................1111
Component Inspection .........................................111 3
Removal and Installation .....................................111 5
DTC P1146, P1166 HO2S2 ....................................111 6
Component Description .......................................111 6
CONSULT-II Reference Value in Data Monitor Mode
111 6
On Board Diagnosis Logic ...................................111 6
DTC Confirmation Procedure ..............................111 7
Overall Function Check .......................................111 7
Wiring Diagram ....................................................111 9
Diagnostic Procedure ..........................................11 2 2
Component Inspection .........................................11 2 5
Removal and Installation .....................................11 2 6
DTC P1147, P1167 HO2S2 ....................................112 7
Component Description .......................................11 2 7
CONSULT-II Reference Value in Data Monitor Mode
11 2 7
On Board Diagnosis Logic ...................................11 2 7
DTC Confirmation Procedure ..............................11 2 8
Overall Function Check .......................................11 2 8
Wiring Diagram ....................................................11 3 0
Diagnostic Procedure ..........................................11 3 3
Component Inspection .........................................11 3 6
Removal and Installation .....................................11 3 7
DTC P1148, P1168 CLOSED LOOP CONTROL ...113 8
On Board Diagnosis Logic ...................................11 3 8
DTC Confirmation Procedure ..............................11 3 8
Overall Function Check .......................................11 3 9
Diagnostic Procedure ..........................................11 3 9
DTC P1211 TCS CONTROL UNIT .........................114 0
Description ...........................................................11 4 0
On Board Diagnosis Logic ...................................11 4 0
DTC Confirmation Procedure ..............................11 4 0
Diagnostic Procedure ..........................................11 4 0DTC P1212 TCS COMMUNICATION LINE ............11 41
Description ...........................................................11 4 1
On Board Diagnosis Logic ...................................11 4 1
DTC Confirmation Procedure ...............................11 4 1
Diagnostic Procedure ...........................................11 4 1
DTC P1217 ENGINE OVER TEMPERATURE .......11 42
Description ...........................................................11 4 2
CONSULT-II Reference Value in Data Monitor Mode
11 4 3
On Board Diagnosis Logic ...................................11 4 3
Overall Function Check ........................................11 4 3
Wiring Diagram ....................................................11 4 5
Diagnostic Procedure ...........................................11 4 7
Main 12 Causes of Overheating ..........................11 5 0
Component Inspection .........................................11 5 1
DTC P1225 TP SENSOR .......................................11 52
Component Description .......................................11 5 2
On Board Diagnosis Logic ...................................11 5 2
DTC Confirmation Procedure ...............................11 5 2
Diagnostic Procedure ...........................................11 5 3
Removal and Installation ......................................11 5 3
DTC P1226 TP SENSOR .......................................11 54
Component Description .......................................11 5 4
On Board Diagnosis Logic ...................................11 5 4
DTC Confirmation Procedure ...............................11 5 4
Diagnostic Procedure ...........................................11 5 5
Removal and Installation ......................................11 5 5
DTC P1229 SENSOR POWER SUPPLY ...............11 56
On Board Diagnosis Logic ...................................11 5 6
DTC Confirmation Procedure ...............................11 5 6
Wiring Diagram ....................................................11 5 7
Diagnostic Procedure ...........................................11 5 8
DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ..............................11 60
Description ...........................................................11 6 0
CONSULT-II Reference Value in Data Monitor Mode
11 6 0
On Board Diagnosis Logic ...................................11 6 1
DTC Confirmation Procedure ...............................11 6 1
Wiring Diagram ....................................................11 6 2
Diagnostic Procedure ...........................................11 6 4
Component Inspection .........................................11 6 7
Removal and Installation ......................................11 6 7
DTC P1446 EVAP CANISTER VENT CONTROL
VALVE .....................................................................11 68
Component Description .......................................11 6 8
CONSULT-II Reference Value in Data Monitor Mode
11 6 8
On Board Diagnosis Logic ...................................11 6 8
DTC Confirmation Procedure ...............................11 6 9
Wiring Diagram ....................................................11 7 0
Diagnostic Procedure ...........................................11 7 1
Component Inspection .........................................11 7 2
DTC P1564 ICC STEERING SWITCH ...................11 74
Component Description .......................................11 7 4
CONSULT-II Reference Value in Data Monitor Mode
11 7 4
On Board Diagnosis Logic ...................................11 7 4
DTC Confirmation Procedure ...............................11 7 4

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Revision: 2004 November 2004 FX35/FX45Wiring Diagram ...................................................1176
Diagnostic Procedure ..........................................1177
Component Inspection ........................................1180
DTC P1564 ASCD STEERING SWITCH ...............1181
Component Description .......................................1181
CONSULT-II Reference Value in Data Monitor Mode
1181
On Board Diagnosis Logic ..................................1181
DTC Confirmation Procedure ..............................1182
Wiring Diagram ...................................................1183
Diagnostic Procedure ..........................................1184
Component Inspection ........................................1187
DTC P1568 ICC FUNCTION ..................................1188
On Board Diagnosis Logic ..................................1188
DTC Confirmation Procedure ..............................1188
Diagnostic Procedure ..........................................1188
DTC P1572 ICC BRAKE SWITCH ........................1189
Component Description .......................................1189
CONSULT-II Reference Value in Data Monitor Mode
1189
On Board Diagnosis Logic ..................................1189
DTC Confirmation Procedure ..............................1190
Wiring Diagram ...................................................1191
Diagnostic Procedure ..........................................1192
Component Inspection ........................................1197
DTC P1572 ASCD BRAKE SWITCH ....................1199
Component Description .......................................1199
CONSULT-II Reference Value in Data Monitor Mode
1199
On Board Diagnosis Logic ..................................1199
DTC Confirmation Procedure ..............................1200
Wiring Diagram ...................................................1201
Diagnostic Procedure ..........................................1202
Component Inspection ........................................1206
DTC P1574 ICC VEHICLE SPEED SENSOR .......1207
Component Description .......................................1207
On Board Diagnosis Logic ..................................1207
DTC Confirmation Procedure ..............................1207
Diagnostic Procedure ..........................................1208
DTC P1574 ASCD VEHICLE SPEED SENSOR ...1209
Component Description .......................................1209
On Board Diagnosis Logic ..................................1209
DTC Confirmation Procedure ..............................1209
Diagnostic Procedure ..........................................1210
DTC P1706 PNP SWITCH .....................................1211
Component Description .......................................1211
CONSULT-II Reference Value in Data Monitor Mode
1211
On Board Diagnosis Logic ..................................1211
DTC Confirmation Procedure ..............................1211
Overall Function Check .......................................1212
Wiring Diagram ...................................................1213
Diagnostic Procedure ..........................................1214
DTC P1720 VEHICLE SPEED SENSOR (A/T OUT-
PUT) .......................................................................1216
Description ..........................................................1216
CONSULT-II Reference Value in Data Monitor Mode
1216
On Board Diagnosis Logic ..................................1216DTC Confirmation Procedure ..............................1216
Diagnostic Procedure ..........................................1217
DTC P1780 SHIFT CHANGE SIGNAL ..................1218
Description ...........................................................1218
On Board Diagnosis Logic ...................................1218
DTC Confirmation Procedure ..............................1218
Diagnostic Procedure ..........................................1218
DTC P1805 BRAKE SWITCH ................................1220
Description ...........................................................1220
CONSULT-II Reference Value in Data Monitor Mode
1220
On Board Diagnosis Logic ...................................1220
DTC Confirmation Procedure ..............................1220
Wiring Diagram ....................................................1221
Diagnostic Procedure ..........................................1222
Component Inspection .........................................1224
DTC P2122, P2123 APP SENSOR ........................1225
Component Description .......................................1225
CONSULT-II Reference Value in Data Monitor Mode
1225
On Board Diagnosis Logic ...................................1225
DTC Confirmation Procedure ..............................1226
Wiring Diagram ....................................................1227
Diagnostic Procedure ..........................................1228
Component Inspection .........................................1230
Removal and Installation .....................................1231
DTC P2127, P2128 APP SENSOR ........................1232
Component Description .......................................1232
CONSULT-II Reference Value in Data Monitor Mode
1232
On Board Diagnosis Logic ...................................1232
DTC Confirmation Procedure ..............................1233
Wiring Diagram ....................................................1234
Diagnostic Procedure ..........................................1235
Component Inspection .........................................1238
Removal and Installation .....................................1238
DTC P2135 TP SENSOR .......................................1239
Component Description .......................................1239
CONSULT-II Reference Value in Data Monitor Mode
1239
On Board Diagnosis Logic ...................................1239
DTC Confirmation Procedure ..............................1240
Wiring Diagram ....................................................1241
Diagnostic Procedure ..........................................1242
Component Inspection .........................................1245
Removal and Installation .....................................1245
DTC P2138 APP SENSOR ....................................1246
Component Description .......................................1246
CONSULT-II Reference Value in Data Monitor Mode
1246
On Board Diagnosis Logic ...................................1246
DTC Confirmation Procedure ..............................1247
Wiring Diagram ....................................................1248
Diagnostic Procedure ..........................................1249
Component Inspection .........................................1253
Removal and Installation .....................................1253
VARIABLE INDUCTION AIR CONTROL SYSTEM
(VIAS) .....................................................................1254
Description ...........................................................1254

EC-14Revision: 2004 November 2004 FX35/FX45CONSULT-II Reference Value in Data Monitor Mode
1255
Wiring Diagram ....................................................1256
Diagnostic Procedure ..........................................1257
Component Inspection .........................................1260
Removal and Installation .....................................1261
IGNITION SIGNAL .................................................1262
Component Description .......................................1262
Wiring Diagram ....................................................1263
Diagnostic Procedure ..........................................1268
Component Inspection .........................................1272
Removal and Installation .....................................1273
INJECTOR CIRCUIT ..............................................1274
Component Description .......................................1274
CONSULT-II Reference Value in Data Monitor Mode
1274
Wiring Diagram ....................................................1275
Diagnostic Procedure ..........................................1276
Component Inspection .........................................1279
Removal and Installation .....................................1279
FUEL PUMP CIRCUIT ...........................................1280
Description ...........................................................1280
CONSULT-II Reference Value in Data Monitor Mode
1280
Wiring Diagram ....................................................1281
Diagnostic Procedure ..........................................1282
Component Inspection .........................................1285
Removal and Installation .....................................1286
REFRIGERANT PRESSURE SENSOR .................1287
Component Description .......................................1287
Wiring Diagram ....................................................1288
Diagnostic Procedure ..........................................1289
Removal and Installation .....................................1291
ELECTRICAL LOAD SIGNAL ...............................1292
Description ...........................................................1292
CONSULT-II Reference Value in Data Monitor Mode
1292
Diagnostic Procedure ..........................................1292
ICC BRAKE SWITCH .............................................1293
Component Description .......................................1293
CONSULT-II Reference Value in Data Monitor Mode
1293
Wiring Diagram ....................................................1294
Diagnostic Procedure ..........................................1295
Component Inspection .........................................1301
ASCD BRAKE SWITCH .........................................1302
Component Description .......................................1302
CONSULT-II Reference Value in Data Monitor Mode
1302Wiring Diagram ....................................................1303
Diagnostic Procedure ...........................................1304
Component Inspection .........................................1308
ASCD INDICATOR .................................................1309
Component Description .......................................1309
CONSULT-II Reference Value in Data Monitor Mode
1309
Wiring Diagram ....................................................1310
Diagnostic Procedure ...........................................1311
SNOW MODE SWITCH ..........................................1312
Description ...........................................................1312
CONSULT-II Reference Value in the Data Monitor
Mode ....................................................................1312
Wiring Diagram ....................................................1313
Diagnostic Procedure ...........................................1314
Component Inspection .........................................1317
MIL AND DATA LINK CONNECTOR .....................1318
Wiring Diagram ....................................................1318
EVAPORATIVE EMISSION SYSTEM ....................1320
Description ...........................................................1320
Component Inspection .........................................1323
Removal and Installation ......................................1324
How to Detect Fuel Vapor Leakage .....................1324
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ...................................................................1327
System Description ..............................................1327
Diagnostic Procedure ...........................................1328
Component Inspection .........................................1330
POSITIVE CRANKCASE VENTILATION ...............1332
Description ...........................................................1332
Component Inspection .........................................1332
AUTOMATIC SPEED CONTROL DEVICE (ASCD) 1334
System Description ..............................................1334
Component Description .......................................1335
SERVICE DATA AND SPECIFICATIONS (SDS) ...1336
Fuel Pressure .......................................................1336
Idle Speed and Ignition Timing .............................1336
Calculated Load Value .........................................1336
Mass Air Flow Sensor ..........................................1336
Intake Air Temperature Sensor ............................1336
Engine Coolant Temperature Sensor ...................1336
Heated Oxygen Sensor 1 Heater .........................1336
Heated Oxygen Sensor 2 Heater .........................1336
Crankshaft Position Sensor (POS) ......................1336
Camshaft Position Sensor (PHASE) ....................1336
Throttle Control Motor ..........................................1336
Injector .................................................................1337
Fuel Pump ............................................................1337

PRECAUTIONS
EC-23
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2004 November 2004 FX35/FX45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
ABS00A2R
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
On Board Diagnostic (OBD) System of Engine and A/TABS006JZ
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-74, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,
etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PrecautionABS006K0

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect negative battery cable.
SEF289H

EC-26
[VQ35DE]
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45

Do not operate fuel pump when there is no fuel in lines.

Tighten fuel hose clamps to the specified torque.

Do not depress accelerator pedal when starting.

Immediately after starting, do not rev up engine unneces-
sarily.

Do not rev up engine just prior to shutdown.

When installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–Keep the antenna as far as possible from the electronic
control units.
–Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–Adjust the antenna and feeder line so that the standing-
wave radio can be kept smaller.
–Be sure to ground the radio to vehicle body.
Wiring Diagrams and Trouble DiagnosisABS006K1
When you read wiring diagrams, refer to the following:

GI-15, "How to Read Wiring Diagrams"

PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit
When you perform trouble diagnosis, refer to the following:

GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"

GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident"
PBIB1569E
SEF709Y
SEF708Y

EC-36
[VQ35DE]
ENGINE CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
NOTE:
This function is different from deceleration control listed under “Multiport Fuel Injection (MFI) System”, EC-32
.
CAN communicationABS006KB
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-6, "
CAN Communication Unit" , about CAN communication for detail.

EC-40
[VQ35DE]
BASIC SERVICE PROCEDURE
Revision: 2004 November 2004 FX35/FX45
INSPECTION PROCEDURE
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
–Harness connectors for improper connections
–Wiring harness for improper connections, pinches and cut
–Vacuum hoses for splits, kinks and improper connections
–Hoses and ducts for leaks
–Air cleaner clogging
–Gasket
3. Confirm that electrical or mechanical loads are not applied.
–Headlamp switch is OFF.
–Air conditioner switch is OFF.
–Rear window defogger switch is OFF.
–Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no-
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3.
SEF983U
SEF976U
SEF977U