Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti M45 Y34 2003-2004 Approved M45-Y34-2004 ex
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EXHAUST SYSTEM
B ENGINE
A
SECTION
EXHAUST SYSTEM
EX EX
C
D
E
CONTENTS
PREPARATION .......................................................... 2
. fler Control Unit ........................................................ 8
. F
Special Service Tools .............................................. 2
. Components Inspection ........................................... 8 .
Commercial Service Tools ....................................... 2
. EXHAUST CONTROL VALVE .............................. 8 .
EXHAUST SYSTEM .................................................. 3
. DUAL MODE MUFFLER ACTUATOR .................. 8 . G
Checking Exhaust System ...................................... 3 . Removal and Installation ......................................... 9 .
Removal and Installation ......................................... 3
. REMOVAL (CABLE) ............................................. 9 .
REMOVAL ............................................................ 4
. INSTALLATION (CABLE) ..................................... 9 .
H
INSTALLATION .................................................... 4
. REMOVAL (ACTUATOR) ..................................... 9 .
INSPECTION AFTER INSTALLATION ................ 5 . INSTALLATION (ACTUATOR) ............................ 10 .
DUAL MODE MUFFLER ........................................... 6 . REMOVAL (MUFFLER CONTROL UNIT) .......... 10 .
Component Parts Location ...................................... 6. INSTALLATION .................................................. 10. I
Wiring Diagram -VEXH- .......................................... 7
. SERVICE DATA AND SPECIFICATIONS (SDS) ..... 11 .
Terminals and Reference Value for Dual Mode Muf- Tightening Torque .................................................. 11
.
J
K
L
M
Revision: 2004 October EX-1 2004 M45
PREPARATION
PREPARATION PFP:00002
Special Service Tools ABS00A3E
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 ABS00A3F
(Kent-Moore No.)
Description
Tool name
(J-43897-18) Reconditioning the exhaust system threads
(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
Anti-seize lubricant (Permatex 133AR Lubricating heated oxygen sensor thread
or equivalent meeting MIL cleaner when reconditioning exhaust system
specification MIL-A-907) threads
AEM489
Power tool Loosening bolts and nuts
PBIC0190E
Revision: 2004 October EX-2 2004 M45
EXHAUST SYSTEM
EXHAUST SYSTEM PFP:20100
A
Checking Exhaust System ABS00A3G
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 ABS00A3H
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.
H
I
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K
L
M
PBIC3105E
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 (bank 2)
Revision: 2004 October EX-3 2004 M45
EXHAUST SYSTEM
10. Heated oxygen sensor 2 (bank 1) 11. Ring gasket 12. Bracket
13. Bracket 14. Gasket 15. Center muffler
REMOVAL
1. Remove cable from exhaust control valve.Refer to 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.
a. Disconnect harness connector of each heated oxygen sensor 2.
b. Using heated oxygen sensor wrench (SST), remove both left
and right heated oxygen sensor 2.
q Put marks to identify installation positions of each heated oxy-
gen sensor 2.
CAUTION:
Be careful not to damage heated oxygen sensor.
NOTE:
Figure is shown as an example of right bank.
3. Disconnect each joint and mounting using power tool.
PBIC2671E
INSTALLATION
Install in the reverse order of removal.
CAUTION:
q Always replace exhaust gaskets with new ones when reassembling.
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 anti-
seize lubricant (commercial service tool).
q Do not over torque heated oxygen sensor. Doing so may cause damage to the heated oxygen sen-
sor, 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. Check each part for unusual interference, and then tighten them to the specified torque.
q When installing each clamp, align the protrusion on insulator with the clamp hole.
q When installing each mounting rubber, avoid twisting or unusual extension in up/down and right/
left directions.
q Install mounting rubbers on rear main muffler as shown.
PBIC0172E
Revision: 2004 October EX-4 2004 M45
EXHAUST SYSTEM
INSPECTION AFTER INSTALLATION
Install in the reverse order of removal paying attention to the followings. A
q Check clearance between tail tube and bumper is even.
q With engine running, check exhaust tube joints for gas leakage and unusual noises.
EX
q Check to ensure that mounting brackets and mounting insulators are installed properly and free from
undue stress. Improper installation could result in excessive noise and vibration.
C
D
E
F
G
H
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K
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M
Revision: 2004 October EX-5 2004 M45
DUAL MODE MUFFLER
DUAL MODE MUFFLER PFP:20130
Component Parts Location ABS00A3I
NOTE:
Refer to EX-9, "Removal and Installation" about Muffler control unit
and Cable.
PBIC0175E
PBIC0177E
Revision: 2004 October EX-6 2004 M45
DUAL MODE MUFFLER
Wiring Diagram -VEXH- ABS00A3J
A
EX
C
D
E
F
G
H
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K
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M
TBWA0317E
Revision: 2004 October EX-7 2004 M45
DUAL MODE MUFFLER
Terminals and Reference Value for Dual Mode Muffler Control Unit ABS00A7K
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 ABS00A3L
EXHAUST CONTROL VALVE
Check operation of valve and actuator by revving engine.
Condition
Accelerator pedal Exhaust control valve
Engine rpm
opening
Above approximate 4830 rpm Open
Below half (no-load)
Below approximate 4730 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
Revision: 2004 October EX-8 2004 M45
DUAL MODE MUFFLER
Removal and Installation ABS00A3M
A
EX
C
D
E
F
SBIA0404E
1. Actuator mounting bracket 2. Actuator 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.
L
M
PBIC0174E
INSTALLATION (CABLE)
q 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.
Revision: 2004 October EX-9 2004 M45
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 fixing 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.
Revision: 2004 October EX-10 2004 M45
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS) PFP:00030
A
Tightening Torque ABS00A3N
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