2004 INFINITI FX35 No crank no power

AT-266
TRANSMISSION ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
TRANSMISSION ASSEMBLYPFP:31020
Removal and Installation (2WD Models)ACS002S1
COMPONENTS
REMOVAL
CAUTION:
When removing the A/T assembly from engine, first remove the crankshaft position sensor (POS) from
the A/T assembly.
Be careful not to damage sensor edge.
1. Disconnect the battery cable from the negative terminal.
2. Remove engine cover.
3. Remove A/T fluid level gauge.
4. Remove engine under cover with power tool.
5. Remove front cross bar. Refer to FSU-8, "
Components" .
6. Remove exhaust front tube and center muffler with power tool. Refer to EX-3, "
Removal and Installation" .
7. Remove three way catalyst. Refer to EM-26, "
Removal and Installation" .
8. Remove rear propeller shaft. Refer to PR-7, "
Removal and Installation" .
9. Remove control rod. Refer to AT- 2 3 3 , "
Control Device Removal and Installation" .
1. Transmission assembly 2. A/T fluid charging pipe 3. O-ring
4. Fluid cooler tube 5. Copper washer 6. A/T fluid level gauge
7. Engine rear member 8. Insulator
SCIA5050E

TRANSMISSION ASSEMBLY
AT-267
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Revision: 2004 November 2004 FX35/FX45
10. Remove crankshaft position sensor (POS) from A/T assembly.
CAUTION:

Do not subject it to impact by dropping or hitting it.

Do not disassemble.

Do not allow metal filings, etc. to get on the sensor's front
edge magnetic area.

Do not place in an area affected by magnetism.
11. Remove starter motor. Refer to SC-18, "
VQ35DE ENGINE
MODELS (2WD)" .
12. Remove fluid cooler tube.
13. Remove rear plate from converter housing part. Refer to EM-30,
"Removal and Installation" .
14. Remove rear cover plate. Refer to EM-30, "
Removal and Installation" .
15. Turn crankshaft, and remove the four tightening bolts for drive
plate and torque converter.
CAUTION:
When turning crankshaft, turn it clockwise as viewed from
the front of the engine.
16. Support transmission assembly with a transmission jack.
CAUTION:
When setting the transmission jack, be careful not to allow
it to collide against the drain plug.
17. Remove engine rear member with power tool.
18. Remove air breather hose. Refer to AT- 2 6 4 , "
Removal and
Installation" .
19. Disconnect A/T assembly harness connector.
20. Remove A/T fluid charging pipe from transmission assembly.
21. Plug up openings such as the A/T fluid charging pipe hole, etc.
22. Remove bolts fixing transmission assembly to engine with power tool.
23. Remove transmission assembly from vehicle with a transmis-
sion jack.

Secure torque converter to prevent it from dropping.

Secure transmission assembly to a jack.
INSPECTION
Installation and Inspection of Torque Converter

After inserting a torque converter to a transmission, be sure to
check distance “A” to ensure it is within the reference value limit.
SCIA2155E
SCIA2288E
SCIA0499E
Distance “A”: 25.0 mm (0.98 in) or more
SAT017B

AT-270
TRANSMISSION ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
COMPONENTS (FOR VK45DE)
REMOVAL
CAUTION:
When removing the A/T assembly from engine, first remove the crankshaft position sensor (POS) from
the A/T assembly.
Be careful not to damage sensor edge.
1. Disconnect the battery cable from the negative terminal.
2. Remove engine cover.
3. Remove A/T fluid level gauge.
4. Remove engine under cover with power tool.
5. Remove front cross bar. Refer to FSU-8, "
Components" .
6. Remove exhaust front tube and center muffler with power tool. Refer to EX-3, "
Removal and Installation" .
7. Remove three way catalyst. Refer to EM-26, "
Removal and Installation" (for VQ35DE models), EM-178,
"Removal and Installation" (for VK45DE models).
8. Remove front propeller shaft. Refer to PR-4, "
Removal and Installation" .
9. Remove rear propeller shaft. Refer to PR-7, "
Removal and Installation" .
10. Remove control rod. Refer to AT- 2 3 3 , "
Control Device Removal and Installation" .
1. A/T fluid charging pipe 2. O-ring 3. Insulator
4. Engine rear member 5. Heat insulator 6. Copper washer
7. Fluid cooler tube 8. Transmission assembly 9. A/T fluid level gauge
SCIA5194E

TRANSMISSION ASSEMBLY
AT-271
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Revision: 2004 November 2004 FX35/FX45
11. Remove crankshaft position sensor (POS) from A/T assembly.
CAUTION:

Do not subject it to impact by dropping or hitting it.

Do not disassemble.

Do not allow metal filings, etc. to get on the sensor's front
edge magnetic area.

Do not place in an area affected by magnetism.
12. Remove starter motor. Refer to SC-19, "
VQ35DE ENGINE
MODELS (AWD)" or SC-17, "VK45DE ENGINE MODELS" .
13. Disconnect fluid cooler tube from transmission assembly.
14. Remove rear plate from converter housing part. Refer to EM-30,
"Removal and Installation" (for VQ35DE models) or EM-181,
"Removal and Installation" (for VK45DE models).
15. Turn crankshaft, and remove the four tightening bolts for drive
plate and torque converter.
CAUTION:
When turning crankshaft, turn it clockwise as viewed from
the front of the engine.
16. Remove dynamic damper (for VQ35DE models). Refer to TF-
44, "Components" .
17. Support transmission assembly and transfer with a transmission
jack.
CAUTION:
When setting the transmission jack, be careful not to allow
it to collide against the drain plug.
18. Remove engine rear member with power tool.
19. Tilt the mission slightly to keep the clearance between body and
mission, and then disconnect air breather hose from charging
pipe. Refer to AT- 2 6 4 , "
Removal and Installation" .
20. Disconnect A/T assembly harness connector and transfer assembly harness connector.
21. Remove A/T fluid charging pipe.
22. Plug up openings such as the A/T fluid charging pipe hole, etc.
23. Remove bolts fixing transmission assembly to engine with power tool.
SCIA2011E
SCIA5326E
SCIA2010E
SCIA2202E

BL-120
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
ENGINE START FUNCTION MALFUNCTION
Intelligent Key Operation Inspection
Mechanical Key Operation Inspection
WARNING CHIME FUNCTION MALFUNCTION
Before conducting the diagnosis in the following table, check “key reminder function” with power door lock sys-
tem.
Symptom Diagnoses service procedure Refer to page
Ignition knob can not turn
KEY warning lamp on combination meter
lights up in red when ignition knob is
pressed. (door lock functions normal)1. Intelligent Key inspectionBL-147
2. Check inside key antennaBL-138
3. Replace Intelligent Key unitBL-146
KEY warning lamp on combination meter
lights up in green when ignition knob is
pressed.1. Check ignition knob switchBL-1272. Check steering lock unitBL-139
3. Check Intelligent Key unit power supply and ground circuitBL-124
4. Replace Intelligent Key unitBL-146
Ignition knob turns even without both Intelli-
gent Key and mechanical key.Replace steering lock unit —
Security indicator will still flash when igni-
tion knob is pressed.1. Check key switch (Intelligent Key unit input)BL-124
2. Replace Intelligent Key unitBL-146
Security indicator does not flash with igni-
tion knob released at LOCK position. (push
switch OFF)1. CAN communication systemBL-123
2. Ignition knob switch systemBL-127
3. Intelligent Key unit power supply and ground circuitBL-124
Starter motor does not cranking.
(Ignition knob can turn)1. Check detention switchBL-1422. Check stop lamp switchBL-141
3. Replace Intelligent Key unitBL-146
Symptom Diagnoses service procedure Refer to page
Ignition knob can not turn
Security indicator remains flashing with
mechanical key inserted.1. Check key switch (BCM input)BL-126
2. Replace Intelligent Key unitBL-146
KEY indicator and security indicator does
not flashing with mechanical key inserted.1. Check stop lamp switchBL-141
2. Replace Intelligent Key unitBL-146
Starter motor does not cranking.
(Ignition knob can turn)1. Check detention switchBL-1422. Check stop lamp switchBL-141
3. Replace Intelligent Key unitBL-146
Symptom Diagnoses service procedure Refer to page
Ignition key warning chime is inoperative.
(When mechanical key used)1. Check CAN communicationBL-123
2. Check key switch (Intelligent Key unit input)BL-124
3. Check door switchBL-128
4. Inspect combination meter (warning)DI-4
5. Replace Intelligent Key unitBL-146
Ignition knob OFF position warning
chime (for inside vehicle) does not
sound.
(Ignition key warning chime operates)1. Check CAN communicationBL-1232. Check ignition knob switchBL-127
3. Check key switch (Intelligent Key unit input)BL-124
4. Replace Intelligent Key unitBL-146

COOLING FAN
CO-47
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45
COOLING FANPFP:21140
Removal and Installation (Crankshaft Driven Type)ABS006JT
REMOVAL
1. Remove air duct (inlet). Refer to EM-172, "AIR CLEANER AND AIR DUCT" .
2. Remove engine front undercover with power tool.
3. Remove radiator shroud (lower). Refer to CO-39, "
Removal and Installation" .
4. Remove drive belts. Refer to EM-169, "
DRIVE BELTS" .
5. Remove cooling fan.
CAUTION:
Do not damage or scratch radiator core when removing.
INSPECTION AFTER REMOVAL
Fan Coupling
Inspect fan coupling for oil leakage and bimetal conditions.

If anything is found, replace fan coupling.
Cooling Fan
Inspect cooling fan for crack or unusual bend.

If anything is found, replace cooling fan.
INSTALLATION
Note to the following, install in the reverse order of removal.

Install cooling fan with its front mark “F” facing front of vehicle. Refer to CO-47, "Removal and Installation
(Crankshaft Driven Type)" .
1. Cooling fan 2. Fan coupling 3. Fan pulley
4. Water pump
PBIC1537E
SLC072

ENGINE CONTROL SYSTEM
EC-31
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
System ChartABS006K6
*1: This sensor is not used to control the engine system. This is used only for the on board diagnosis.
*2: This sensor is not used to control the engine system under normal conditions.
*3: This input signal is sent to the ECM through CAN communication line.
*4: This output signal is sent from the ECM through CAN communication line.Input (Sensor) ECM Function Output (Actuator)

Camshaft position sensor (PHASE)

Crankshaft position sensor (POS)

Mass air flow sensor

Engine coolant temperature sensor

Heated oxygen sensor 1

Throttle position sensor

Accelerator pedal position sensor

Park/neutral position (PNP) switch

Intake air temperature sensor

Power steering pressure sensor

Ignition switch

Battery voltage

Knock sensor

Refrigerant pressure sensor

Stop lamp switch

ICC steering switch

ICC brake switch

ASCD steering switch

ASCD brake switch

Fuel level sensor*1 *3

EVAP control system pressure sensor

Fuel tank temperature sensor*1

Heated oxygen sensor 2*2

TCM (Transmission control module)*3

ABS actuator and electric unit (control unit)*3

ICC unit*3

Air conditioner switch*3

Wheel sensor*3

Electrical load signal*3
Fuel injection & mixture ratio control Fuel injector
Electronic ignition system Power transistor
Fuel pump control Fuel pump relay
ICC vehicle speed control Electric throttle control actuator
ASCD vehicle speed control Electric throttle control actuator
On board diagnostic system
MIL (On the instrument panel)*
4
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control
Air conditioner relay*
4
Cooling fan control
Cooling fan relay*4
ON BOARD DIAGNOSIS for EVAP system EVAP canister vent control valve

EC-32
[VQ35DE]
ENGINE CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
Multiport Fuel Injection (MFI) SystemABS006K7
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.


During warm-up

When starting the engine

During acceleration

Hot-engine operation

When selector lever is changed from N to D

High-load, high-speed operation


During deceleration

During high engine speed operation
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed*
3
Piston position
Fuel injection
& mixture ratio
controlFuel injector Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Battery
Battery voltage*
3
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
Air conditioner switch*
2Air conditioner operation
Wheel sensor*
2Vehicle speed