2007 INFINITI FX35 engine oil

EC-96
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Symptom Matrix ChartNBS003M0
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 11232 22 3 2 EC-636
Fuel pressure regulator system334444444 4 EC-85
Fuel injector circuit 11232 22 2 EC-629
Evaporative emission system 334444444 4EC-38
Air Positive crankcase ventilation sys-
tem 33 4444444 41
EC-50
Incorrect idle speed adjustment 1 1 1 1 1 EC-76
Electric throttle control actuator 112332222 2 2 EC-563,
EC-574
IgnitionIncorrect ignition timing adjustment33111 11 1 EC-76
Ignition circuit 11222 22 2EC-650
Power supply and ground circuit22333 33 23 EC-148
Mass air flow sensor circuit
1
12 2
222 2 EC-187,
EC-196
Engine coolant temperature sensor circuit
3 33
EC-209,
EC-221
Air fuel ratio (A/F) sensor EC-239
EC-239
EC-248
EC-257
EC-605
Throttle position sensor circuit
22 EC-214
,
EC-338
,
EC-509
,
EC-511
,
EC-590
Accelerator pedal position sensor circuit 3 2 1 EC-483
,
EC-576
,
EC-583
,
EC-597
Knock sensor circuit 2 3 EC-355
Crankshaft position sensor (POS) circuit 2 2EC-360
Camshaft position sensor (PHASE) circuit 3 2EC-367
Vehicle speed signal circuit 2 3 3 3EC-465
Power steering pressure sensor circuit 2 3 3EC-471

TROUBLE DIAGNOSIS EC-97
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
1 - 6: The numbers refer to the order of inspection.
(continued on next page) ECM 22333333333
EC-476
,
EC-480
Intake valve timing control solenoid valve cir-
cuit 32 13223 3
EC-180
Park/neutral position (PNP) switch circuit 3 3 3 3 3 EC-488
Refrigerant pressure sensor circuit 2 3 3 4EC-663
Electrical load signal circuit 3EC-627
Air conditioner circuit223333333 3 2 AT C - 4 0
ABS actuator and electric unit (control unit) 4 BRC-11
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-98
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank 5
5 FL-10
Fuel piping 5 5 5 5 5 5
EM-45
Vapor lock —
Valve deposit 5 555 55 5 —
Poor fuel (Heavy weight gaso-
line, Low octane) —
Air Air duct
55555 5 EM-17
Air cleaner
EM-17
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator) 5555 EM-17
Electric throttle control actuator
EM-19
Air leakage from intake manifold/
Collector/Gasket EM-19,
EM-24
Cranking Battery 111111
1 1
SC-5
Generator circuit
SC-24
Starter circuit 3SC-11
Signal plate 6EM-123
Park/neutral position (PNP)
switch 4
AT- 11 2
Engine Cylinder head
55555 55 5 EM-101
Cylinder head gasket 4 3
Cylinder block
66666 66 6 4
EM-123
Piston
Piston ring
Connecting rod
Bearing
Crankshaft

TROUBLE DIAGNOSIS EC-99
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Revision: 2006 July 2007 FX35/FX45
1 - 6: The numbers refer to the order of inspection. Va l v e
mecha-
nism Timing chain
55555 55 5 EM-64
Camshaft
EM-83
Intake valve timing controlEM-64
Intake valve
3 EM-101
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/ Gasket 55555 55 5 EM-26
,
EX-
3Three way catalyst
Lubrica-
tion Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler 55555 55 5 EM-30
,
LU-
17 , LU-10 ,
LU-14
Oil level (Low)/Filthy oil LU-7
Cooling
Radiator/Hose/Radiator filler cap
55555 55 45 CO-14,
CO-17
Thermostat 5 CO-27
Water pumpCO-22
Water galleryCO-29
Cooling fan 5EC-227
Coolant level (Low)/Contami-
nated coolant 5
CO-11
IVIS (Infiniti Vehicle Immobilizer System —
NATS) 11
EC-52 or
BL-205
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

TROUBLE DIAGNOSIS EC-127
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Revision: 2006 July 2007 FX35/FX45
*: Leaving cooling fan OFF with CONSULT-II while engine is running may cause the engine to overheat.
DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer to EC-59, "SYSTEM READINESS TEST (SRT) CODE" .
SRT WORK SUPPORT Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
DTC WORK SUPPORT Mode
POWER BAL-
ANCE

Engine: After warming up, idle
the engine.

A/C switch: OFF

Selector lever: P or N

Cut off each fuel injector signal
one at a time using CONSULT-II. Engine runs rough or dies.

Harness and connectors

Compression

Fuel injector

Power transistor

Spark plug

Ignition coil
COOLING FAN*

Ignition switch: ON

Turn the cooling fan “HI”, “MID”,
“LOW” and “OFF” using CON-
SULT-II. Cooling fan moves and stops.
Harness and connectors

Cooling fan motor

IPDM E/R
ENG COOLANT
TEMP

Engine: Return to the original
trouble condition

Change the engine coolant tem-
perature using CONSULT-II. If trouble symptom disappears, see
CHECK ITEM.

Harness and connectors

Engine coolant temperature sen-
sor

Fuel injector
FUEL PUMP
RELAY

Ignition switch: ON
(Engine stopped)

Turn the fuel pump relay “ON”
and “OFF” using CONSULT-II
and listen to operating sound. Fuel pump relay makes the operat-
ing sound.
Harness and connectors

Fuel pump relay
PURG VOL
CONT/V

Engine: After warming up, run
engine at 1,500 rpm.

Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II. Engine speed changes according to
the opening percent.
Harness and connectors

Solenoid valve
FUEL/T TEMP
SEN

Change the fuel tank temperature using CONSULT-II.
VENT CON-
TROL/V

Ignition switch: ON
(Engine stopped)

Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound. Solenoid valve makes an operating
sound.
Harness and connectors

Solenoid valve
V/T ASSIGN
ANGLE

Engine: Return to the original
trouble condition

Change intake valve timing using
CONSULT-II. If trouble symptom disappears, see
CHECK ITEM.

Harness and connectors

Intake valve timing control sole-
noid valve
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
Test mode Test item Corresponding DTC No. Reference page
EVAPORATIVE SYS-
TEM PURG FLOW P0441 P0441
EC-382
EVP SML LEAK P0442/P1442* P0442EC-387
EVP V/S LEAK P0456/P1456* P0456EC-449
PURG VOL CN/V P1444 P0443EC-396

TROUBLE DIAGNOSIS - SPECIFICATION VALUE EC-141
[VQ35DE]
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EC
Revision: 2006 July 2007 FX35/FX45
5. CHANGE ENGINE OIL
1. Stop the engine.
2. Change engine oil. NOTE:
This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving
conditions (such as when engine oil temperature does not rise enough since a journey distance is too
short during winter). The symptom will not be detected after changing engine oil or changing driving con-
dition.
>> INSPECTION END
6. CHECK FUEL PRESSURE
Check fuel pressure. (Refer to EC-85, "
Fuel Pressure Check" .)
OK or NG
OK >> GO TO 9.
NG (Fuel pressure is too high)>>Replace fuel pressure regulator, refer to EC-85, "
Fuel Pressure Check" .
GO TO 8.
NG (Fuel pressure is too low)>>GO TO 7.
7. DETECT MALFUNCTIONING PART
1. Check the following.
–Clogged and bent fuel hose and fuel tube
–Clogged fuel filter
–Fuel pump and its circuit (Refer to EC-636, "FUEL PUMP" .)
2. If NG, repair or replace the malfunctioning part. (Refer to EC-85, "
Fuel Pressure Check" .)
If OK, replace fuel pressure regulator.
>> GO TO 8.
8. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value.
OK or NG
OK >> INSPECTION END
NG >> GO TO 9.
9. PERFORM POWER BALANCE TEST
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2. Make sure that the each cylinder produces a momentary engine speed drop.
OK or NG
OK >> GO TO 12.
NG >> GO TO 10.
PBIB0133E

EC-142
[VQ35DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Revision: 2006 July 2007 FX35/FX45
10. DETECT MALFUNCTIONING PART
1. Check the following.
–Ignition coil and its circuit (Refer to EC-650, "IGNITION SIGNAL" .)
–Fuel injector and its circuit (Refer to EC-629, "FUEL INJECTOR" .)
–Intake air leakage
–Low compression pressure (Refer to EM-101, "CHECKING COMPRESSION PRESSURE" .)
2. If NG, repair or replace the malfunctioning part. If OK, replace fuel injector. (It may be caused by leakage from fuel injector or clogging.)
>> GO TO 11.
11 . CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value.
OK or NG
OK >> INSPECTION END
NG >> GO TO 12.
12. CHECK A/F SENSOR 1 FUNCTION
Perform all DTC Confirmation Procedure related with A/F sensor 1.

For DTC P0130, P0150, refer to EC-229, "DTC Confirmation Procedure" .

For DTC P0131, P0151, refer to EC-240, "DTC Confirmation Procedure" .

For DTC P0132, P0152, refer to EC-249, "DTC Confirmation Procedure" .

For DTC P0133, P0153, refer to EC-258, "DTC Confirmation Procedure" .

For DTC P2A00, P2A03, refer to EC-606, "DTC Confirmation Procedure" .
OK or NG
OK >> GO TO 15.
NG >> GO TO 13.
13. CHECK A/F SENSOR 1 CIRCUIT
Perform Diagnostic Procedure according to corresponding DTC.
>> GO TO 14.
14. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value.
OK or NG
OK >> INSPECTION END
NG >> GO TO 15.
15. DISCONNECT AND RECONNECT ECM HARNESS CONNECTOR
1. Stop the engine.
2. Disconnect ECM harness connector. Check pin terminal and connector for damage, and then reconnect it.
>> GO TO 16.

TROUBLE DIAGNOSIS - SPECIFICATION VALUE EC-143
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Revision: 2006 July 2007 FX35/FX45
16. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the each indication is within the SP value.
OK or NG
OK >> INSPECTION END
NG >> Detect malfunctioning part according to EC-96, "
Symptom Matrix Chart" .
17. CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK >> INSPECTION END
NG (More than the SP value)>>GO TO 18.
NG (Less than the SP value)>>GO TO 25.
18. DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following.
–Engine oil level is too high
–Engine oil viscosity
–Belt tension of power steering, alternator, A/C compressor, etc. is excessive
–Noise from engine
–Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
–Valve clearance malfunction
–Intake valve timing control function malfunction
–Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19. CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.

Crushed air ducts

Malfunctioning seal of air cleaner element

Uneven dirt of air cleaner element

Improper specification of intake air system
OK or NG
OK >> GO TO 21.
NG >> Repair or replace malfunctioning part, and then GO TO 20.
PBIB2332E