spark plugs replace INFINITI FX35 2007 Service Manual

TROUBLE DIAGNOSIS EC-87
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Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionNBS003LX
INTRODUCTION
The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.
It is much more difficult to diagnose an incident that occurs intermit-
tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II (or GST) or a circuit tester connected should
be performed. Follow the WORK FLOW on EC-88, "
WORK FLOW" .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A DIAGNOSTIC WORKSHEET like the
example on EC-91, "
DIAGNOSTIC WORKSHEET" should be used.
Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
MEF036D
SEF233G
SEF234G

DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS- FIRE
EC-351
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
8. CHECK SPARK PLUG
Check the initial spark plug for fouling, etc.
OK or NG
OK >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-20, "
Changing Spark Plugs
(Platinum-Tipped Type)" .
NG >> 1. Repair or clean spark plug.
2. GO TO 9.
9. CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs.
2. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and the grounded portion.
OK or NG
OK >> INSPECTION END
NG >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-20, "
Changing
Spark Plugs (Platinum-Tipped Type)" .
10. CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-101, "
CHECKING COMPRESSION PRESSURE" .
OK or NG
OK >> GO TO 11.
NG >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
11 . CHECK FUEL PRESSURE
1. Install all removed parts.
2. Release fuel pressure to zero. Refer to EC-85, "
FUEL PRESSURE RELEASE" .
3. Install fuel pressure gauge and check fuel pressure. Refer to EC-86, "
FUEL PRESSURE CHECK" .
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.
12. DETECT MALFUNCTIONING PART
Check the following.

Fuel pump and circuit (Refer to EC-636, "FUEL PUMP" .)

Fuel pressure regulator (Refer to EC-86, "FUEL PRESSURE CHECK" .)

Fuel lines (Refer to MA-17, "Checking Fuel Lines" .)

Fuel filter for clogging
>> Repair or replace.
SEF156I
Spark should be generated.
At idle: Approximately 350 kPa (3.57 kg/cm
2 , 51 psi)

EC-380
[VQ35DE]
DTC P0420, P0430 THREE WAY CATALYST FUNCTION
Revision: 2006 July 2007 FX35/FX45
7. CHECK FUNCTION OF IGNITION COIL-II
1. Turn ignition switch OFF.
2. Disconnect spark plug and connect a known-good spark plug.
3. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and the grounded metal portion.
OK or NG
OK >> GO TO 8.
NG >> Check ignition coil, power transistor and their circuits. Refer to EC-650, "
IGNITION SIGNAL" .
8. CHECK SPARK PLUG
Check the spark plugs and check for fouling, etc.
OK or NG
OK >> GO TO 9.
NG >> Repair or replace spark plug (s) with standard type one
(s). For spark plug type ignition coil. Refer to MA-20,
"Changing Spark Plugs (Platinum-Tipped Type)" .
9. CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs.
2. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and the grounded portion.
OK or NG
OK >> INSPECTION END
NG >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to MA-20, "
Changing
Spark Plugs (Platinum-Tipped Type)" .
10. CHECK FUEL INJECTOR
1. Turn ignition switch OFF.
2. Remove fuel injector assembly. Refer to EM-45, "
FUEL INJECTOR AND FUEL TUBE" .
Keep fuel hose and all fuel injectors connected to fuel injector gallery.
3. Disconnect all ignition coil harness connectors.
4. Reconnect all fuel injector harness connectors disconnected.
5. Turn ignition switch ON. Make sure fuel does not drip from fuel injector.
OK or NG
OK (Does not drip.)>>GO TO 11.
NG (Drips.)>>Replace the fuel injector(s) from which fuel is dripping. Spark should be generated.
SEF156I
Spark should be generated.

TROUBLE DIAGNOSIS EC-749
[VK45DE]
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EC
Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionNBS0041X
INTRODUCTION
The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.
It is much more difficult to diagnose an incident that occurs intermit-
tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II (or GST) or a circuit tester connected should
be performed. Follow the Work Flow on EC-750
.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on EC-754
should be used.
Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
MEF036D
SEF233G
SEF234G

EC-1022
[VK45DE]
DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS- FIRE
Revision: 2006 July 2007 FX35/FX45
8. CHECK SPARK PLUG
Check the initial spark plug for fouling, etc.
OK or NG
OK >> Replace malfunctioning spark plug(s) with standard type one(s). For spark plug type, refer to EM-192
.
NG >> 1. Repair or clean spark plug.
2. GO TO 9.
9. CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs.
2. Crank engine for about three seconds, and recheck whether spark is generated between the spark plug and the grounded portion.
OK or NG
OK >> INSPECTION END
NG >> Replace malfunctioning spark plug(s) with standard type one(s). For spark plug type, refer to EM-
192 .
10. CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-232, "
CHECKING COMPRESSION PRESSURE" .
OK or NG
OK >> GO TO 11.
NG >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
11 . CHECK FUEL PRESSURE
1. Install all removed parts.
2. Release fuel pressure to zero. Refer to EC-747, "
FUEL PRESSURE RELEASE" .
3. Install fuel pressure gauge and check fuel pressure. Refer to EC-748, "
FUEL PRESSURE CHECK" .
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.
12. DETECT MALFUNCTIONING PART
Check the following.

Fuel pump and circuit (Refer to EC-1318, "FUEL PUMP" .)

Fuel pressure regulator (Refer to EC-748, "FUEL PRESSURE CHECK" .)

Fuel lines (Refer to FL-3, "Checking Fuel Lines" .)

Fuel filter for clogging
>> Repair or replace.
SEF156I
Spark should be generated.
At idling: Approximately 350 kPa (3.57 kg/cm
2 , 51 psi)

DTC P0420, P0430 THREE WAY CATALYST FUNCTION EC-1049
[VK45DE]
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Revision: 2006 July 2007 FX35/FX45
7. CHECK FUNCTION OF IGNITION COIL-II
1. Turn ignition switch OFF.
2. Disconnect spark plug and connect a known-good spark plug.
3. Crank engine for about three seconds, and recheck whether spark is generated between the spark plug and the grounded metal portion.
OK or NG
OK >> GO TO 8.
NG >> Check ignition coil, power transistor and their circuits. Refer to EC-1332
.
8. CHECK SPARK PLUG
Check the initial spark plug for fouling, etc.
OK or NG
OK >> Replace malfunctioning spark plug(s) with standard type one(s). For spark plug type, refer to EM-192
.
NG >> 1. Repair or clean spark plug.
2. GO TO 9.
9. CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs.
2. Crank engine for about three seconds, and recheck whether spark is generated between the spark plug and the grounded portion.
OK or NG
OK >> INSPECTION END
NG >> Replace malfunctioning spark plug(s) with standard type one(s). For spark plug type, refer to EM-
192 .
10. CHECK FUEL INJECTOR
1. Turn ignition switch OFF.
2. Remove fuel tube assembly. Refer to EM-194, "
FUEL INJECTOR AND FUEL TUBE" .
Keep fuel hose and all fuel injectors connected to fuel tube.
3. Reconnect all fuel injector harness connectors disconnected.
4. Disconnect all ignition coil harness connectors.
5. Turn ignition switch ON. Make sure fuel does not drip from fuel injector.
OK or NG
OK (Does not drip.)>>GO TO 11.
NG (Drips.)>>Replace the fuel injector(s) from which fuel is dripping. Spark should be generated.
SEF156I
Spark should be generated.

MA-8
PERIODIC MAINTENANCE
Revision: 2006 July 2007 FX35/FX45
Schedule 1NLS0005Y
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles,
kilometers or months, which-
ever comes first. Miles x 1,000
(km x 1,000) Months 3.75
(6) 3 7.50
(12) 6 11 . 2 5
(18) 9 15
(24) 12 18.75
(30) 15 22.5
(36) 18 26.25
(42) 21 30
(48) 24
Drive belts NOTE (1) MA-14
,
MA-
22
Air cleaner filter NOTE (2) [R] MA-18,
MA-
25
EVAP vapor lines I* MA-21,
MA-
28
Fuel lines I* MA-17,
MA-
25
Fuel filter NOTE (3) -
Engine coolant NOTE (4) MA-15
,
MA-
22
Engine oil R R RRRRR R MA-18,
MA-
25
Engine oil filter [Use part No.
15208 31U00 (for VK45DE),
15208 65F00 (for VQ35DE)
or equivalent.] R R RRRRR R
MA-19
,
MA-
26
Spark plugs (PLATINUM-
TIPPED type) Replace every 105,000 miles (169,000 km). MA-20,
MA-
27
Intake & exhaust valve clear-
ance* NOTE (5) EM-93, "Valve Clear-
ance",
EM-
222, "Va l v e
Clearance"
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles,
kilometers or months, which-
ever comes first. Miles x 1,000
(km x 1,000) Months 33.75
(54) 27 37.5
(60) 30 41.25
(66) 33 45
(72) 36 48.75
(78) 39 52.5
(84) 42 56.25
(90) 45 60
(96) 48
Drive belts NOTE (1) I* MA-14
,
MA-
22
Air cleaner filter NOTE (2) [R] MA-18,
MA-
25
EVAP vapor lines I* MA-21,
MA-
28
Fuel lines I* MA-17,
MA-
25
Fuel filter NOTE (3) -
Engine coolant NOTE (4) R* MA-15
,
MA-
22
Engine oil R R R R R R R R MA-18,
MA-
25
Engine oil filter [Use part No.
15208 31U00 (for VK45DE),
15208 65F00 (for VQ35DE)
or equivalent.] R R RRRRRR
MA-19
,
MA-
26

PERIODIC MAINTENANCE MA-9
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Revision: 2006 July 2007 FX35/FX45
NOTE:
(1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace the drive belts i f found
damaged or if the auto belt tensioner reading (only for VK45DE engine) reaches the maximum limit.
(2) If operating mainly in dusty conditions, more frequent maintenance may be required.
(3) Maintenance-free item. For service procedures, refer to FL section.
(4) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(5) If valve noise increases, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by INFINITI for reliable vehicle operation. The owner need not perfo rm
such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and inter vals are
required.
CHASSIS AND BODY MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary.
Spark plugs (PLATINUM-
TIPPED type) Replace every 105,000 miles (169,000 km). MA-20
,
MA-
27
Intake & exhaust valve clear-
ance* NOTE (5) EM-93, "Valve Clear-
ance",
EM-
222, "Va l v e
Clearance"
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles,
kilometers or months, which-
ever comes first. Miles x 1,000
(km x 1,000) Months 33.75
(54) 27 37.5
(60) 30 41.25
(66) 33 45
(72) 36 48.75
(78) 39 52.5
(84) 42 56.25
(90) 45 60
(96) 48
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles,
kilometers or months,
whichever comes first. Miles x 1,000
(km x 1,000)
Months 3.75
(6)
3 7.50
(12)
6 11 . 2 5
(18)
9 15
(24)
12 18.75
(30)
15 22.5
(36)
18 26.25
(42)
21 30
(48)
24
Brake lines & cables II MA-35
Brake pads & rotors
IIII MA-36
Automatic transmission &
transfer fluid & differential
gear oil NOTE (1) I I MA-29,
MA-31
,
MA-32
Steering gear, linkage &
transfer gear, axle & sus-
pension parts IIII MA-36
,
MA-37
Tire rotation NOTE (2) MA-4,
MA-35
Drive shaft boots and pro-
peller shaft (AWD models) IIII MA-38,
MA-32
Exhaust system IIII MA-29
In-cabin microfilter
RR AT C - 1 2 4
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles,
kilometers or months,
whichever comes first. Miles x 1,000
(km x 1,000)
Months 33.75
(54)
27 37.5
(60)
30 41.25
(66)
33 45
(72)
36 48.75
(78)
39 52.5
(84)
42 56.25
(90)
45 60
(96)
48
Brake lines & cables II MA-35
Brake pads & rotors
I III MA-36

MA-10
PERIODIC MAINTENANCE
Revision: 2006 July 2007 FX35/FX45
NOTE:
(1) If towing a trailer, using a camper or a car-top carrier, or driving on rough or muddy roads, change (not just inspect) fl uid (A/T, trans-
fer)/oil at every 30,000 miles (48,000 km) or 24 months. Using automatic transmission fluid other than Genuine Nissan Matic J
ATF will cause deterioration in driveability and automatic transmission durability, and may damage the automatic transmis-
sion, which is not covered by the INFINITI new vehicle limited warranty.
(2) Refer to “Tire rotation” under the “GENERAL MAINTENANCE” heading earlier in this section.
Schedule 2NLS0005Z
EMISSION COMTROL SYSTEM MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only
NOTE:
(1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace the drive belts i f found
damaged or if the auto belt tensioner reading (only for VK45DE engine) reaches the maximum limit.
(2) Maintenance-free item. For service procedures, refer to FL section.
(3) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(4) If valve noise increases, inspect valve clearance. Automatic transmission &
transfer fluid & differential
gear oil NOTE (1) I I
MA-29
,
MA-31
,
MA-32
Steering gear, linkage &
transfer gear, axle & sus-
pension parts I III
MA-36
, MA-37
Tire rotation NOTE (2) MA-4,
MA-35
Drive shaft boots and pro-
peller shaft (AWD models) I III MA-38,
MA-32
Exhaust system I III MA-29
In-cabin microfilter
RR ATC-124
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles,
kilometers or months,
whichever comes first. Miles x 1,000
(km x 1,000) Months 33.75
(54) 27 37.5
(60) 30 41.25
(66) 33 45
(72) 36 48.75
(78) 39 52.5
(84) 42 56.25
(90) 45 60
(96) 48
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference Sec-
tion - Page or - Content Title
Perform at number of miles,
kilometers or months, whichever
comes first. Miles x 1,000
(km x 1,000) Months 7.5
(12) 6 15
(24) 12 22.5
(36) 18 30
(48) 24 37.5
(60) 30 45
(72) 36 52.5
(84) 42 60
(96) 48
Drive belts NOTE (1) I* MA-14
, MA-22
Air cleaner filter [R] [R] MA-18, MA-25
EVAP vapor lines I* I* MA-21, MA-28
Fuel lines I* I* MA-17, MA-25
Fuel filter NOTE (2) -
Engine coolant NOTE (3) R* MA-15
, MA-22
Engine oil R R R R R R R R MA-18, MA-25
Engine oil filter [Use part No.
15208 31U00 (for VK45DE),
15208 65F00 (for VQ35DE) or
equivalent.] RRRR R RRR
MA-19
, MA-26
Spark plugs (PLATINUM-
TIPPED type) Replace every 105,000 miles (169,000 km).
MA-20, MA-27
Intake & exhaust valve clear-
ance* NOTE (4) EM-93, "
Va l v e
Clearance",
EM-
222, "Va l v e
Clearance"