diagram INFINITI FX35 2004 Service Manual

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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

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

ENGINE CONTROL SYSTEM
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Revision: 2004 November 2004 FX35/FX45
ENGINE CONTROL SYSTEMPFP:23710
System DiagramABS006K4
PBIB2294E

EC-30
[VQ35DE]
ENGINE CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
Vacuum Hose DrawingABS006K5
Refer to EC-29, "System Diagram" for Vacuum Control System.
PBIB2000E

EC-46
[VQ35DE]
BASIC SERVICE PROCEDURE
Revision: 2004 November 2004 FX35/FX45
22. CHECK HEATED OXYGEN SENSOR 1 (BANK 2) SIGNAL
Without CONSULT-II
1. Switch the monitored sensor from bank 1 to bank 2. Refer to EC-70, "
How to Switch Monitored Sensor
From Bank 1 to Bank 2 or Vice Versa" .
2. Running engine at 2,000 rpm under no-load (The engine is warmed up to normal operating temperature.),
check that the MIL comes on more than 5 times during 10 seconds.
OK or NG
OK >>INSPECTION END
NG (MIL does not come on)>>GO TO 24.
NG (MIL comes on less than 5 times)>>GO TO 31.
23. CHECK HEATED OXYGEN SENSOR 1 (BANK 1) HARNESS
1. Turn ignition switch OFF and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (bank 1) harness connector.
4. Check harness continuity between ECM terminal 35 and heated oxygen sensor 1 (bank 1) terminal 1.
Refer to Wiring Diagram, EC-207, "
BANK 1" .
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 25.
NG >> 1. Repair or replace harness between ECM and heated oxygen sensor 1 (bank 1).
2. GO TO 4.
24. CHECK HEATED OXYGEN SENSOR 1 (BANK 2) HARNESS
1. Turn ignition switch OFF and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (bank 2) harness connector.
4. Check harness continuity between ECM terminal 16 and heated oxygen sensor 1 (bank 2) terminal 1.
Refer to Wiring Diagram, EC-209, "
BANK 2" .
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 25.
NG >> 1. Repair or replace harness between ECM and heated oxygen sensor 1 (bank 2).
2. GO TO 4.
25. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Reconnect ECM harness connector.
2. Perform EC-49, "
Accelerator Pedal Released Position Learning" .
>> GO TO 26.
26. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-49, "
Throttle Valve Closed Position Learning" .
>> GO TO 27.
Continuity should exist.
Continuity should exist.

EC-98
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Circuit DiagramABS006KU
TBWH0101E

EC-136
[VQ35DE]
POWER SUPPLY AND GROUND CIRCUIT
Revision: 2004 November 2004 FX35/FX45
POWER SUPPLY AND GROUND CIRCUITPFP:24110
Wiring DiagramABS006L7
TBWM0217E

EC-138
[VQ35DE]
POWER SUPPLY AND GROUND CIRCUIT
Revision: 2004 November 2004 FX35/FX45
4. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground three screws on the body. Refer to EC-141, "
Ground Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace ground connections.
5. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 1, 115, 116 and body ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F102, M82

Harness for open or short between ECM and body ground
>> Repair open circuit or short to power in harness or connectors.
7. CHECK ECM POWER SUPPLY CIRCUIT-II
1. Reconnect ECM harness connector.
2. Turn ignition switch ON.
3. Check voltage between IPDM E/R connector E7 terminal 17 and
ground with CONSULT-II or tester.
OK or NG
OK >> Go to EC-585, "IGNITION SIGNAL" .
NG >> GO TO 8.
PBIB2195E
Continuity should exist.
Voltage: Battery voltage
PBIB1610E

POWER SUPPLY AND GROUND CIRCUIT
EC-139
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
8. CHECK ECM POWER SUPPLY CIRCUIT-III
1. Turn ignition switch ON and then OFF.
2. Check voltage between ECM terminals 119, 120 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 17.
NG (Battery voltage does not exist.)>>GO TO 9.
NG (Battery voltage exists for more than a few seconds.)>>GO TO
17.
9. CHECK ECM POWER SUPPLY CIRCUIT-IV
1. Turn ignition switch OFF, and wait at least 10 seconds.
2. Check voltage between ECM terminal 111 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 12.
10. CHECK ECM POWER SUPPLY CIRCUIT-V
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E7.
3. Check harness continuity between ECM terminals 119, 120 and IPDM E/R terminal 18.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 15.
NG >> GO TO 11.
11 . DETECT MALFUNCTIONING PART
Check the following.

Harness or connectors E211, M41

Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors. Voltage: After turning ignition switch OFF, battery
voltage will exist for a few seconds, then
drop approximately 0V.
PBIB1630E
Voltage: Battery voltage
PBIB1191E
Continuity should exist.