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EXHAUST SYSTEM

B ENGINE

SECTION
EXHAUST SYSTEM
EX EX

E
CONTENTS
PREPARATION .......................................................... 2
. Terminals and Reference Value for Dual Mode Muf- F
Special Service Tools .............................................. 2
. fler Control Unit ........................................................ 9
.
Commercial Service Tools ....................................... 2
. Components Inspection ........................................... 9 .
EXHAUST SYSTEM .................................................. 3
. EXHAUST CONTROL VALVE .............................. 9 . G
Checking Exhaust System ...................................... 3 . DUAL MODE MUFFLER ACTUATOR .................. 9 .
Removal and Installation ......................................... 3
. Removal and Installation ....................................... 10 .
REMOVAL ............................................................ 4
. REMOVAL (CABLE) ........................................... 10 .
H
INSTALLATION .................................................... 5
. INSTALLATION (CABLE) ................................... 10 .
INSPECTION AFTER INSTALLATION ................ 5 . REMOVAL (ACTUATOR) ................................... 10 .
DUAL MODE MUFFLER ........................................... 7 . INSTALLATION (ACTUATOR) ............................ 11 .
Component Parts Location ...................................... 7. REMOVAL (MUFFLER CONTROL UNIT) .......... 11 . I
Wiring Diagram -VEXH- .......................................... 8
. INSTALLATION .................................................. 11.

Revision: 2005 November EX-1 2006 Q45
PREPARATION

PREPARATION PFP:00002

Special Service Tools NBS0028M

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 NBS0028N

(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
oxygen sensor thread cleaner (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
AEM488 titania heated oxygen sensor
( -- ) 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

Revision: 2005 November EX-2 2006 Q45
EXHAUST SYSTEM

EXHAUST SYSTEM PFP:20100
A
Checking Exhaust System NBS0028O

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.

SMA211A

E
Removal and Installation NBS0028P

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.

Revision: 2005 November EX-3 2006 Q45
EXHAUST SYSTEM

PBIC4210E

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 (bank2)
10. Heated oxygen sensor 2 (bank1) 11. Ring gasket 12. Bracket
13. Bracket 14. Gasket 15. Center muffler
16. Center muffler 17. Gasket 18. U-clamp
19. Serration bolt 20. Main muffler
A. Vehicle with rear active steer

REMOVAL
1. Remove cable from exhaust control valve. Refer to Dual mode muffler, EX-10, "Removal and Installation"
.
2. Disconnect harness connector of each heated oxygen sensor 2.
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.

Revision: 2005 November EX-4 2006 Q45
EXHAUST SYSTEM

q Using heated oxygen sensor wrench (SST), remove heated
oxygen sensor 2 (bank1 and bank2). A
CAUTION:
Be careful not to damage heated oxygen sensor.
NOTE: EX
Figure is shown as an example of right bank.

PBIC2671E

D
3. Disconnect each joint and mounting rubber using power tool.
Models with rear active steer
q Remove U-clamp. E
q Remove nut, then remove serration bolt.

q Remove main muffler from the center muffler.
F
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION: G
q Always replace exhaust gaskets with new ones when reassembling.
q Discard any heated oxygen sensor which has been dropped onto a hard surface such as a con-
crete floor; use a new one. H
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).
I
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-
J
lator, remove them.
q When installing insulator avoid large gaps or interference between insulator and each exhaust
pipe.
K
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 L
torque.
q When installing each mounting rubber, avoid twisting or unusual extension in up/down and right/
left directions. M
q Install mounting rubbers on rear main muffler as shown.

PBIC2868E

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.
q With engine running, make sure that exhaust tube joints for gas leakage and unusual noises.

Revision: 2005 November EX-5 2006 Q45
EXHAUST SYSTEM

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.

Revision: 2005 November EX-6 2006 Q45
DUAL MODE MUFFLER

DUAL MODE MUFFLER PFP:20130
A
Component Parts Location NBS0028Q

NOTE:
Refer to EX-10, "Removal and Installation" about Muffler control unit EX
and Cable.

PBIC0175E E

PBIC2778E

Revision: 2005 November EX-7 2006 Q45
DUAL MODE MUFFLER

Wiring Diagram -VEXH- NBS0028R

TBWM0594E

Revision: 2005 November EX-8 2006 Q45
DUAL MODE MUFFLER

Terminals and Reference Value for Dual Mode Muffler Control Unit NBS0028S

A
Terminal No. Condition
Item Operation or con- Voltage (V)
(Wire color) Ignition switch
dition
EX
OFF 0
1 (W/G) Ignition switch
ON Battery voltage
2 (B) Ground ON 0 C
3 (L) Engine speed signal -- Idling Approx. 4 - 6

Exhaust control valve signal CLOSE 0-1
4 (G/Y) D
(Open) OPEN Battery voltage
ON
Exhaust control valve signal CLOSE Battery voltage
5 (G/R)
(Close) OPEN 0-1 E
Over half More than approx. 2.4
6 (R/Y) Accelerator pedal position signal ON
Below half Approx. 0 - 2.4
F
Components Inspection NBS0028T

EXHAUST CONTROL VALVE
Check operation of valve and actuator by revving engine. G
Condition
Accelerator pedal Exhaust control valve
Engine rpm H
opening
Above approximate 4,830 rpm Open
Below half (no-load)
Below approximate 4,730 rpm Close I
Over half (loaded) -- Open

PBIZ0004J J
DUAL MODE MUFFLER ACTUATOR
Check voltage between terminals 4 and 5 of dual mode muffler con-
trol unit harness connector and ground. K
Terminals
Exhaust control valve
(+) (-)
L
Terminal
Connector Open Close
(Wire color)
Ground
4 (G/Y) Battery voltage 0 - 1V M
B73
5 (G/R) 0 - 1V Battery voltage

PBIC4626E

Revision: 2005 November EX-9 2006 Q45
DUAL MODE MUFFLER

Removal and Installation NBS0028U

PBIC4241E

1. Actuator mounting bracket 2. Cover 3. Cable
Exhaust control valve
4. Center muffler 5. 6. Actuator
(Do not disassemble.)
7. Muffler control unit

NOTE:
Exhaust control valve is provided in center muffler and not permitted to disassemble.
REMOVAL (CABLE)
NOTE:
Removal and installation procedure is the same on both side of actuator and exhaust control valve.
1. Remove cable from actuator and exhaust control valve.
q Loosen lock nut A.

CAUTION:
Do not loosen positioning nuts B and C.
2. Remove middle clamp bolt and cable.

PBIC4242E

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-10, "REMOVAL (CABLE)" .
3. Remove actuator.

Revision: 2005 November EX-10 2006 Q45
DUAL MODE MUFFLER

INSTALLATION (ACTUATOR)
Install in the reverse order of removal. A

REMOVAL (MUFFLER CONTROL UNIT)
1. Open trunk lid, and remove trunk side finisher (right).
EX
2. Remove muffler control unit mounting bolt.
3. Disconnect harness connector and remove muffler control unit
along with bracket. C
CAUTION:
Do not drop or damage muffler control unit when removing.
D

PBIC0175E
E
INSTALLATION
Install in the reverse order of removal.
F

Revision: 2005 November EX-11 2006 Q45
DUAL MODE MUFFLER

Revision: 2005 November EX-12 2006 Q45

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