Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 FY33 F50 2001-2006 Approved 2005_Q45 ex
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EXHAUST SYSTEM
B ENGINE
A
SECTION
EXHAUST SYSTEM
EX EX
C
D
E
CONTENTS
PREPARATION .......................................................... 2
. Terminals and Reference Value for Dual Mode Muf- F
Special Service Tools .............................................. 2
. fler Control Unit ........................................................ 8
.
Commercial Service Tools ....................................... 2
. Components Inspection ........................................... 8 .
EXHAUST SYSTEM .................................................. 3
. EXHAUST CONTROL VALVE .............................. 8 . G
Checking Exhaust System ...................................... 3 . DUAL MODE MUFFLER ACTUATOR .................. 8 .
Removal and Installation ......................................... 3
. Removal and Installation ......................................... 9 .
REMOVAL ............................................................ 4
. REMOVAL (CABLE) ............................................. 9 .
H
INSTALLATION .................................................... 4
. INSTALLATION (CABLE) ..................................... 9 .
INSPECTION AFTER INSTALLATION ................ 5 . REMOVAL (ACTUATOR) ..................................... 9 .
DUAL MODE MUFFLER ........................................... 6 . INSTALLATION (ACTUATOR) ............................ 10 .
Component Parts Location ...................................... 6. REMOVAL (MUFFLER CONTROL UNIT) .......... 10 . I
Wiring Diagram -VEXH- .......................................... 7
. INSTALLATION .................................................. 10.
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Edition; 2004 May EX-1 2005 Q45
PREPARATION
PREPARATION PFP:00002
Special Service Tools EBS003GD
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.) Description
Tool name
KV10114400 Loosening or tightening heated oxygen
(J-38365) sensor
Heated oxygen sensor wrench For 22 mm (0.87 in) width hexagon nut
S-NT636
Commercial Service Tools EBS003GE
(Kent-Moore No.)
Description
Tool name
a: (J-43897-18) Reconditioning the exhaust system threads
b: (J-43897-12) before installing a new heated oxygen sensor
Heated oxygen sensor thread cleaner (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
AEM488
( -- ) Lubricating heated oxygen sensor thread
Anti-seize lubricant (Permatex 133AR cleaner when reconditioning exhaust system
or equivalent meeting MIL threads
specification MIL-A-907)
AEM489
Power tool Loosening bolts and nuts
PBIC0190E
Edition; 2004 May EX-2 2005 Q45
EXHAUST SYSTEM
EXHAUST SYSTEM PFP:20100
A
Checking Exhaust System EBS004VQ
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage or deterioration. EX
q If anything is found, repair or replace damaged parts.
C
D
SMA211A
E
Removal and Installation EBS001JQ
CAUTION:
q Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat F
resistance, corrosion resistance, and shape.
q Perform the operation with the exhaust system fully cooled down because the system will be hot
just after engine stops.
G
q Be careful not to cut your hand on the insulator edge.
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PBIC0956E
1. Main muffler 2. Actuator 3. Gasket
4. Ground cable 5. Cable 6. Mounting rubber
7. Exhaust front tube 8. Bracket 9. Heated oxygen sensor 2 (right bank)
Edition; 2004 May EX-3 2005 Q45
EXHAUST SYSTEM
10. Heated oxygen sensor 2 (left bank) 11. Ring gasket 12. Bracket
13. Bracket 14. Gasket 15. Center muffler
REMOVAL
1. Remove cable from exhaust control valve. Refer to Dual mode muffler, EX-9, "Removal and Installation" .
2. Remove heated oxygen sensor 2 as follows:
NOTE:
Information for parts installation/disassembly is as follows although the information is not needed in view
of installation/disassembly procedure.
q Put marks to identify installation positions of each heated oxygen sensor 2.
q The harness connector shape of heated oxygen sensor 2 is varying in right and left.
a. Disconnect harness connector of each heated oxygen sensor 2.
b. Using heated oxygen sensor wrench (SST), remove heated oxy-
gen sensor 2 (right and left bank).
CAUTION:
Be careful not to damage heated oxygen sensor.
NOTE:
Figure is shown as an example of right bank.
PBIC2671E
3. Disconnect each joint and mounting rubber using power tool.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
q Always replace exhaust gaskets with new ones when reassembling.
q When using the heated oxygen sensor wrench [KV10114400 (J-38365)], tighten to the middle of
specified torque because length of tool may induce slight indication increase. (Do not tighten to
the maximum specified torque.)
q Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
q Before installing a new heated oxygen sensor, clean exhaust system threads using the heated
oxygen sensor thread cleaner [commercial service tool: J-43897-18 or J-43897-12], and apply the
anti-seize lubricant (commercial service tool).
q Do not over torque heated oxygen sensor. Doing so may cause damage to heated oxygen sensor,
resulting in the "MIL" coming on.
q If the insulator is badly deformed, repair or replace it. If deposits such as mud pile up on the insu-
lator, remove them.
q When installing insulator avoid large gaps or interference between insulator and each exhaust
pipe.
q Remove deposits and left over gasket material from the sealing surface of each connection. Con-
nect them securely to avoid gas leakage.
q Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the vehi-
cle side. Make sure that each part for unusual interference, and then tighten them to the specified
torque.
q When installing each mounting rubber, avoid twisting or unusual extension in up/down and right/
left directions.
Edition; 2004 May EX-4 2005 Q45
EXHAUST SYSTEM
q Install mounting rubbers on rear main muffler as shown.
A
EX
C
PBIC2868E
D
INSPECTION AFTER INSTALLATION
Note the following, and install in the reverse order of removal.
q Make sure that clearance between tail tube and bumper is even. E
q With engine running, make sure that exhaust tube joints for gas leakage and unusual noises.
q Make sure that mounting brackets and mounting insulators are installed properly and free from undue
stress. Improper installation could result in excessive noise and vibration. F
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Edition; 2004 May EX-5 2005 Q45
DUAL MODE MUFFLER
DUAL MODE MUFFLER PFP:20130
Component Parts Location EBS011TR
NOTE:
Refer to EX-9, "Removal and Installation" about Muffler control unit
and Cable.
PBIC0175E
PBIC2778E
Edition; 2004 May EX-6 2005 Q45
DUAL MODE MUFFLER
Wiring Diagram -VEXH- EBS011TS
A
EX
C
D
E
F
G
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TBWM0594E
Edition; 2004 May EX-7 2005 Q45
DUAL MODE MUFFLER
Terminals and Reference Value for Dual Mode Muffler Control Unit EBS011TT
Terminal No. Condition
Item Operation or con- Voltage (V)
(Wire color) Ignition switch
dition
OFF 0
1 (W/G) Ignition switch
ON Battery voltage
2 (B) Ground ON 0
3 (L) Engine speed signal -- Idling Approx. 4 - 6
Exhaust control valve signal CLOSE 0-1
4 (G/Y)
(Open) OPEN Battery voltage
ON
Exhaust control valve signal CLOSE Battery voltage
5 (G/R)
(Close) OPEN 0-1
Over half More than approx. 2.4
6 (R/Y) Accelerator pedal position signal ON
Below half Approx. 0 - 2.4
Components Inspection EBS011TU
EXHAUST CONTROL VALVE
Check operation of valve and actuator by revving engine.
Condition
Accelerator pedal Exhaust control valve
Engine rpm
opening
Above approximate 4,830 rpm Open
Below half (no-load)
Below approximate 4,730 rpm Close
Over half (loaded) -- Open
PBIZ0004J
DUAL MODE MUFFLER ACTUATOR
Check voltage between terminals 1 and 2 of dual mode muffler actu-
ator harness connector and ground.
Terminals Exhaust control valve
Terminal
(+) (-) Open Close
(Wire color)
1 (G/Y) Battery voltage 0 - 1V
GND
2 (G/R) 0 - 1V Battery voltage
PBIC2409E
Edition; 2004 May EX-8 2005 Q45
DUAL MODE MUFFLER
Removal and Installation EBS00LS4
A
EX
C
D
E
F
SBIA0404E
1. Actuator mounting bracket 2. Cover 3. Cable G
Exhaust control valve
4. Center muffler 5. 6. Actuator
(Do not disassemble.)
7. Muffler control unit H
NOTE:
Exhaust control valve is provided in center muffler and not permitted to disassemble.
I
REMOVAL (CABLE)
NOTE:
Removal and installation procedure is the same on both side of actuator and exhaust control valve. J
1. Remove cable from actuator and exhaust control valve.
q Loosen lock nut A.
CAUTION: K
Do not loosen positioning nuts B and C.
2. Remove middle clamp bolt and cable.
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PBIC0174E
INSTALLATION (CABLE)
Note the following, and install in the reverse order of removal.
q Install cable on cable bracket and then tighten lock nut A to specified torque.
q To avoid twisting the cable when tightening the lock nut A, hold the positioning nut B or C with a wrench.
q If the positioning nuts B and C are loosened, place the nut B so that span D becomes 17.0 mm (0.669 in).
Hold the nut B with a wrench and tighten the nut C to specified torque.
NOTE:
Additional adjustment is unnecessary.
REMOVAL (ACTUATOR)
1. Remove insulator on lower side of actuator.
2. Disconnect harness connector and cable from actuator.
Refer to EX-9, "REMOVAL (CABLE)" .
3. Remove actuator.
Edition; 2004 May EX-9 2005 Q45
DUAL MODE MUFFLER
INSTALLATION (ACTUATOR)
Install in the reverse order of removal.
REMOVAL (MUFFLER CONTROL UNIT)
1. Open trunk lid, and remove trunk side finisher (right).
2. Remove muffler control unit mounting bolt.
3. Disconnect harness connector and remove muffler control unit
along with bracket.
CAUTION:
Do not drop or damage muffler control unit when removing.
PBIC0175E
INSTALLATION
Install in the reverse order of removal.
Edition; 2004 May EX-10 2005 Q45
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