Oxygen sensor INFINITI FX35 2006 Service Manual

EM-10
[VQ35DE]
PREPARATION
Revision: 2006 December 2006 FX35/FX45
Commercial Service ToolsNBS003FW
KV10114400
(J38365)
Heated oxygen sensor wrench Loosening or tightening air fuel ratio sensor 1
a: 22 mm (0.87 in)
KV10117700
(J44716)
Ring gear stopper Removing and installing crankshaft pulley
10006 31U00
(—)
Engine rear slinger Removing and installing oil pan (upper) for on
vehicle service
—
(J-45488)
Quick connector release Removing fuel tube quick connectors in
engine room
Tool number
(Kent-Moore No.)
Tool name Description
NT636
NT822
SBIA0530E
PBIC0198E
(Kent-Moore No.)
Tool name Description
(—)
Power tool Loosening nuts and bolts
(BT3373-F)
Belt tension gauge Checking drive belt tension
PBIC0190E
AMA126

EM-12
[VQ35DE]
PREPARATION
Revision: 2006 December 2006 FX35/FX45
(—)
Valve guide drift Removing and installing valve guide
Intake and Exhaust:
a: 9.5 mm (0.374 in) dia.
b: 5.5 mm (0.217 in) dia.
(—)
Valve guide reamer (1): Reaming valve guide inner hole
(2): Reaming hole for oversize valve guide
Intake and Exhaust:
d
1 : 6.0 mm (0.236 in) dia.
d
2 : 10.2 mm (0.402 in) dia.
(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleaner Reconditioning the exhaust system threads
before installing a new air fuel ratio sensor
and heated oxygen sensor (Use with anti-
seize lubricant shown below.)
a: J-43897-18 [18 mm (0.71 in) dia.] for
zirconia heated oxygen sensor and air fuel
ratio sensor
b: J-43897-12 [12 mm (0.47 in) dia.] for
titania heated oxygen sensor
(—)
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907) Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads
(Kent-Moore No.)
Tool name Description
NT015
NT016
AEM488
AEM489

EM-26
[VQ35DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2006 December 2006 FX35/FX45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
ComponentsNBS003G9
Removal and InstallationNBS003GA
REMOVAL
WARNING:
Perform the work when the exhaust and cooling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
2. Drain engine coolant. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
3. Remove air cleaner case and air duct. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Remove front and rear engine undercover and front cross bar with power tool.
5. Disconnect heated oxygen sensors 2 (bank 1 and bank 2) harness connectors.
1. Heated oxygen sensor 2 (bank 1) 2. Three way catalyst (right bank) 3. Gasket
4. Air fuel ratio sensor 1 (bank 1) 5. Exhaust manifold cover (right bank) 6. Exhaust manifold (right bank)
7. Exhaust manifold (left bank) 8. Exhaust manifold cover (left bank) 9. Three way catalyst (left bank)
10. Air fuel ratio sensor 1 (bank 2) 11. Heated oxygen sensor 2 (bank 2)
PBIC3103E

EXHAUST MANIFOLD AND THREE WAY CATALYST EM-27
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Revision: 2006 December 2006 FX35/FX45
6. Using the heated oxygen sensor wrench (SST), remove heated oxygen sensors 2 (bank 1 and bank 2).
CAUTION:

Be careful not to damage heated oxygen sensor.

Discard any heated oxygen sensor which has been
dropped onto a hard surface such as a concrete floor;
replace with a new sensor.
7. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission. Refer to EX-3, "
EXHAUST SYSTEM" .
8. Remove three way catalysts (right and left bank).
9. Disconnect air fuel ratio sensor 1 (bank 1 and bank 2) harness connectors and remove harness clip.
10. Using the heated oxygen sensor wrench (SST), remove air fuel ratio sensor 1 (bank 1 and bank 2).
CAUTION:

Be careful not to damage air fuel ratio sensor.

Discard any air fuel ratio sensor which has been dropped
onto a hard surface such as a concrete floor; replace with
a new sensor.
11. Remove water pipe and heater pipe on both right and left side. Refer to CO-29, "
WATER OUTLET AND
WATER PIPING" .
12. Remove exhaust manifold cover (right and left bank).
13. Loosen mounting nuts in the reverse order as shown in the fig- ure to remove exhaust manifold with power tool.
NOTE:
Disregard the numerical order No. 7 and 8 in removal.
14. Remove gaskets. CAUTION:
Cover engine openings to avoid entry of foreign materials.
KBIA1740E
SBIA0575E
PBIC2042E

EXHAUST MANIFOLD AND THREE WAY CATALYST EM-29
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Revision: 2006 December 2006 FX35/FX45
Air Fuel Ratio Sensor and Heated Oxygen Sensor
CAUTION:

Before installing a new air fuel ratio sensor and new heated oxygen sensor, clean exhaust system
threads using heated oxygen sensor thread cleaner tool (Commercial Service Tool: J-43897-18 or
J-43897-12) and apply anti-seize lubricant.

Do not over torque air fuel ratio sensor and heated oxygen sensor. Doing so may cause damage to
air fuel ratio sensor and heated oxygen sensor, resulting in the “MIL” coming on.

PREPARATION EM-167
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Revision: 2006 December 2006 FX35/FX45
PREPARATIONPFP:00002
Special Service ToolsNBS003HI
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Tool number
(Kent-Moore No.)
Tool name Description
KV10111100
(J–37228)
Seal cutter Removing steel oil pan and front cover
KV10114400
(J-38365)
Heated oxygen sensor wrench Loosening or tightening air fuel ratio sensors
and heated oxygen sensors
a: 22 mm (0.87 in)
EG15050500
(J–45402)
Compression gauge adapter Inspection of compression pressure
KV10116200
(J–26336-A)
Valve spring compressor
1. KV10115900
(J–26336-20)
Attachment
2. KV10109220
(—)
Adapter Disassembling valve mechanism
Part (1) is a component of KV10116200
(J26336-A), but part (2) is not so.
KV101151S0
(J–38972)
Lifter stopper set
1. KV10115110
(J–38972-1)
Camshaft pliers
2. KV10115120
(J–38972-2)
Lifter stopper Changing valve lifter shims
KV10112100
(BT8653-A)
Angle wrench Tightening bolts for bearing cap, cylinder
head, etc.
S-NT046
S-NT636
ZZA1225D
PBIC1650E
S-NT041
S-NT014

EM-170
[VK45DE]
PREPARATION
Revision: 2006 December 2006 FX35/FX45
(—)
Valve seat cutter set Finishing valve seat dimensions
(—)
Piston ring expander Removing and installing piston ring
(—)
Valve guide drift Removing and installing valve guide
Intake and Exhaust:
a: 9.5 mm (0.374 in) dia.
b: 5.5 mm (0.217 in) dia.
(—)
Valve guide reamer (1): Reaming valve guide inner hole
(2): Reaming hole for oversize valve guide
Intake and Exhaust:
d
1 : 6.0 mm (0.236 in) dia.
d
2 : 10.2 mm (0.402 in) dia.
(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleaner Reconditioning the exhaust system threads
before installing a new heated oxygen
sensor (Use with anti-seize lubricant shown
below.)
a: J-43897-18 (18 mm dia.) for zirconia
heated oxygen sensor
b: J-43897-12 (12 mm dia.) for titania
heated oxygen sensor
(—)
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907) Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads
(Kent-Moore No.)
Tool name Description
S-NT048
S-NT030
S-NT015
S-NT016
AEM488
AEM489

EXHAUST MANIFOLD AND THREE WAY CATALYST EM-183
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
ComponentsNBS003HZ

Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS003I0
REMOVAL
WARNING:
Perform the work, when the exhaust and cooling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-173, "
ENGINE ROOM COVER" .
2. Remove front and rear engine undercovers with power tool.
3. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator assembly. Refer to EM-177, "
AIR CLEANER AND AIR DUCT" .
4. Remove front cross bar. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
5. Drain engine coolant from radiator. Refer to CO-38, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
6. Remove radiator. Refer to CO-41, "
RADIATOR" .
1. Air fuel ratio sensor 1 (bank 2) 2. Exhaust manifold cover (right bank) 3. Exhaust manifold (right bank)
4. Gasket 5. Exhaust manifold (left bank) 6. Exhaust manifold cover (left bank)
7. Air fuel ratio sensor 1 (bank 1) 8. Three way catalyst cover (right bank) 9. Three way catalyst (right bank)
10. Heated oxygen sensor 2 (bank 2) 11. Gasket 12. Three way catalyst cover (left bank)
13. Heated oxygen sensor 2 (bank 1) 14. Three way catalyst (left bank) 15. Mounting bracket
16. Mounting bracket
A. Protrusion for installation confirma-
tion.
:Above
PBIC4549E

EM-184
[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2006 December 2006 FX35/FX45
7. Remove drive belts. Refer to EM-174, "DRIVE BELTS" .
8. Remove air fuel ratio sensor 1 and heated oxygen sensor 2 as follows:
a. Disconnect air fuel ratio sensor 1 and heated oxygen sensor 2 harness connectors.
b. Remove air fuel ratio sensor 1 and heated oxygen sensor 2 on both bank with heated oxygen sensor wrench (SST).
CAUTION:

Be careful not to damage air fuel ratio sensor 1 and
heated oxygen sensor 2.

Discard any air fuel ratio sensor 1 and heated oxygen
sensor 2 which have been dropped onto a hard surface
such as a concrete floor; replace with a new one.
9. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission. Refer to EX-3, "
EXHAUST SYSTEM" .
10. Disconnect A/C piping from A/C compressor, then remove A/C compressor with power tool. Refer to AT C -
139, "Components" .
11. Remove alternator and bracket. Refer to SC-20, "
CHARGING SYSTEM" .
12. Remove exhaust front tube with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
13. Remove steering lower joint at power steering gear assembly side, and release steering lower shaft. Refer to PS-17, "
POWER STEERING GEAR AND LINKAGE" .
14. Remove three way catalysts (right and left bank).
15. Remove exhaust manifold covers. (right and left bank)
PBIC2333E
PBIC2334E

EM-186
[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2006 December 2006 FX35/FX45
Exhaust Manifold

Install exhaust manifold and tighten mounting nuts in numerical
order as shown in the figure.
NOTE:
Tighten mounting nuts No. 1 to 4 in two steps. The numerical
order No. 9 to 12 shown second steps.
Air Fuel Ratio Sensor and Heated Oxygen Sensor

Install air fuel ratio sensors and heated oxygen sensors in the original position.

Install referring the following if the installation positions cannot
be identified.
CAUTION:

Before installing a new air fuel ratio sensor and heated oxy-
gen sensor, clean exhaust system threads using oxygen
sensor thread cleaner (commercial service tool: J-43897-18
or J-43897-12), and apply anti-seize lubricant (commercial
service tool).

Do not over torque air fuel ratio sensor and heated oxygen sensor. Doing so may cause damage to
the heated oxygen sensor, resulting in “MIL” coming on.
A : Left bank
B : Right bank
: Engine front
PBIC3300E
Glass tube color Air fuel ratio sensor 1 : Black
Heated oxygen sensor 2 : White
PBIC2652E