fuel INFINITI FX35 2005 Service Manual

INJECTOR CIRCUIT EC-1357
[VK45DE]
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Revision: 2005 July 2005 FX
Component InspectionABS00E5U
INJECTOR
1. Disconnect injector harness connector.
2. Check resistance between terminals as shown in the figure.
Removal and InstallationABS007X0
INJECTOR
Refer to EM-192, "FUEL INJECTOR AND FUEL TUBE" .
Resistance: 13.5 - 17.5
Ω [at 10 - 60 °C (50 - 140 °F)]
PBIB1727E

EC-1358
[VK45DE]
FUEL PUMP CIRCUIT
Revision: 2005 July 2005 FX
FUEL PUMP CIRCUITPFP:17042
DescriptionABS007X1
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine
startability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows
that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when
the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
COMPONENT DESCRIPTION
A turbine type design fuel pump is used in the fuel tank.
CONSULT-II Reference Value in Data Monitor ModeABS007X2
Specification data are reference values.
Sensor Input signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump control Fuel pump relay
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Sto ps.
PBIB1508E
MONITOR ITEM CONDITION SPECIFICATION
FUEL PUMP RLY

For 1 seconds after turning ignition switch: ON

Engine running or cranking ON

Except above OFF

FUEL PUMP CIRCUIT EC-1359
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Revision: 2005 July 2005 FX
Wiring DiagramABS007X3
TBWM0729E

EC-1360
[VK45DE]
FUEL PUMP CIRCUIT
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureABS007X4
1. CHECK OVERALL FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers. Fuel pressure pulsation should be felt on the fuel feed hose
for 1 second after ignition switch is turned ON.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check voltage between ECM terminal 113 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
11 3 G Y / R F u e l p u m p r e l a y [Ignition switch: ON]

For 1 second after turning ignition switch ON
[Engine is running] 0 - 1.5V
[Ignition switch: ON]

More than 1 second after turning ignition
switch ON BATTERY VOLTAGE
(11 - 14V)
PBIB1491E
Voltage: Battery voltage
PBIB1187E

FUEL PUMP CIRCUIT EC-1361
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Revision: 2005 July 2005 FX
3. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E8.
3. Turn ignition switch ON.
4. Check voltage between IPDM E/R terminal 40 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 11.
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E211, M41

Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect “fuel level sensor unit and fuel pump” harness con- nector.
4. Turn ignition switch ON.
5. Check voltage between “fuel level sensor unit and fuel pump” terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6. Voltage: Battery voltage
PBIB1926E
PBIB1507E
Voltage: Battery voltage should exist for 1 sec-
ond after ignition switch is turned ON.
PBIB0795E

EC-1362
[VK45DE]
FUEL PUMP CIRCUIT
Revision: 2005 July 2005 FX
6. CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >> Replace fuse.
7. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1. Disconnect IPDM E/R harness connector E8.
2. Check harness continuity between IPDM E/R terminal 39 and “fuel level sensor unit and fuel pump” termi- nal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E206, B6

Harness for open or short between IPDM E/R and “fuel level sensor unit and fuel pump”
>> Repair harness or connectors.
9. CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 3 and ground. Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair open circuit or short to power in harness or connectors.
10. CHECK FUEL PUMP
Refer to EC-1363, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace fuel pump.
11 . CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair or replace harness or connectors. Continuity should exist.
Continuity should exist.

FUEL PUMP CIRCUIT EC-1363
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Revision: 2005 July 2005 FX
Component InspectionABS007X5
FUEL PUMP
1. Disconnect “fuel level sensor unit and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump” terminals 1 and 3.
Removal and InstallationABS007X6
FUEL PUMP
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
Resistance: 0.2 - 5.0
Ω [at 25 °C (77 °F)]
SEC918C

SERVICE DATA AND SPECIFICATIONS (SDS) EC-1395
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Revision: 2005 July 2005 FX
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureABS007Y4
Idle Speed and Ignition TimingABS007Y5
*: Under the following conditions:

Air conditioner switch: OFF

Electric load: OFF (Lights, heater fan & rear window defogger)

Steering wheel: Kept in straight-ahead position
Calculated Load ValueABS007Y6
Mass Air Flow SensorABS007Y7
*: Engine is warmed up to normal operating temperature and running under no-load.
Intake Air Temperature SensorABS007Y8
Engine Coolant Temperature SensorABS007Y9
Fuel Tank Temperature SensorABS00E8W
Crankshaft Position Sensor (POS)ABS007YC
Refer to EC-1042, "Component Inspection" .
Camshaft Position Sensor (PHASE)ABS007YD
Refer to EC-1049, "Component Inspection" .
Heated Oxygen Sensor 1 HeaterABS007YA
Fuel pressure at idling kPa (kg/cm2 , psi) Approximately 350 (3.57, 51)
Target idle speed No-load* (in P or N position) 650
±50 rpm
Air conditioner: ON In P or N position 700 rpm or more
Ignition timing In P or N position 12 ° ± 5 ° BTDC
Condition Calculated load value% (Using CONSULT-II or GST)
At idle 14.0 - 33.0
At 2,500 rpm 12.0 - 25.0
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle 1.0 - 1.3V*
Mass air flow (Using CONSULT-II or GST) 2.0 - 6.0 g·m/sec at idle*
7.0 - 20.0 g·m/sec at 2,500 rpm*
Temperature °C ( °F) Resistance k Ω
25 (77) 1.94 - 2.06
Temperature °C ( °F) Resistance k Ω
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Temperature °C ( °F) Resistance k Ω
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
Resistance [at 25°C (77 °F)] 3.3 - 4.0 Ω

EC-1396
[VK45DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2005 July 2005 FX
Heated Oxygen sensor 2 HeaterABS007YB
Throttle Control MotorABS007YE
InjectorABS007YF
Fuel PumpABS007YG
Resistance [at 25°C (77 °F)] 5.0 - 7.0 Ω
Resistance [at 25°C (77 °F)] Approximately 1 - 15 Ω
Resistance [at 10 - 60°C (50 - 140 °F)] 13.5 - 17.5 Ω
Resistance [at 25°C (77 °F)] 0.2 - 5.0 Ω

EM-1
ENGINE MECHANICAL
B ENGINE
CONTENTS
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SECTION EM
A
EM
Revision: 2005 July 2005 FX
ENGINE MECHANICAL
VQ35DE
PRECAUTIONS .......................................................... 5
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect ..................................... ..... 5
OPERATION PROCEDURE ............................ ..... 5
Precautions for Drain Engine Coolant and Engine
Oil ........................................................................ ..... 5
Precautions for Disconnecting Fuel Piping ......... ..... 5
Precautions for Removal and Disassembly ........ ..... 5
Precautions for Inspection, Repair and Replace-
ment .................................................................... ..... 5
Precautions for Assembly and Installation .......... ..... 6
Precautions for Angle Tightening ........................ ..... 6
Precautions for Liquid Gasket ............................. ..... 6
REMOVAL OF LIQUID GASKET SEALING ..... ..... 6
LIQUID GASKET APPLICATION PROCEDURE ..... 6
PREPARATION ...................................................... ..... 8
Special Service Tools .......................................... ..... 8
Commercial Service Tools ................................... ... 10
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ... 13
NVH Troubleshooting — Engine Noise ............... ... 13
Use the Chart Below to Help You Find the Cause
of the Symptom. .................................................. ... 14
DRIVE BELTS ........................................................ ... 15
Checking Drive Belts ........................................... ... 15
Tension Adjustment ............................................. ... 15
ALTERNATOR AND POWER STEERING OIL
PUMP BELT ..................................................... ... 16
A/C COMPRESSOR BELT .............................. ... 16
Removal and Installation ..................................... ... 16
REMOVAL ........................................................ ... 16
INSTALLATION ................................................ ... 16
AIR CLEANER AND AIR DUCT ............................ ... 17
Components ........................................................ ... 17
Removal and Installation ..................................... ... 17
REMOVAL ........................................................ ... 17
INSPECTION AFTER REMOVAL .................... ... 17 INSTALLATION ................................................
... 18
Changing Air Cleaner Filter ................................. ... 18
INSPECTION ................................................... ... 18
REMOVAL ........................................................ ... 18
INSTALLATION ................................................ ... 18
INTAKE MANIFOLD COLLECTOR ....................... ... 19
Components ........................................................ ... 19
Removal and Installation ..................................... ... 19
REMOVAL ........................................................ ... 19
INSPECTION AFTER REMOVAL .................... ... 21
INSTALLATION ................................................ ... 22
INTAKE MANIFOLD .............................................. ... 24
Components ........................................................ ... 24
Removal and Installation ..................................... ... 24
REMOVAL ........................................................ ... 24
INSPECTION AFTER REMOVAL .................... ... 25
INSTALLATION ................................................ ... 25
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST ....................................................................... ... 26
Components ........................................................ ... 26
Removal and Installation ..................................... ... 26
REMOVAL ........................................................ ... 26
INSPECTION AFTER REMOVAL .................... ... 28
INSTALLATION ................................................ ... 28
OIL PAN AND OIL STRAINER .............................. ... 30
Components (2WD Model) .................................. ... 30
Removal and Installation (2WD Model) ............... ... 30
REMOVAL ........................................................ ... 30
INSPECTION AFTER REMOVAL .................... ... 32
INSTALLATION ................................................ ... 32
INSPECTION AFTER INSTALLATION ............. ... 35
Components (AWD Model) .................................. ... 35
Removal and Installation (AWD Model) ............... ... 36
REMOVAL ........................................................ ... 36
INSPECTION AFTER REMOVAL .................... ... 38
INSTALLATION ................................................ ... 38
INSPECTION AFTER INSTALLATION ............. ... 41