Infiniti Q45. Manual — part 578
DUAL MODE MUFFLER
EX-9
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Terminals and Reference Value for Dual Mode Muffler Control Unit
NBS0028S
Components Inspection
NBS0028T
EXHAUST CONTROL VALVE
Check operation of valve and actuator by revving engine.
DUAL MODE MUFFLER ACTUATOR
Check voltage between terminals 4 and 5 of dual mode muffler con-
trol unit harness connector and ground.
Terminal No.
Item
Condition
Voltage (V)
(Wire color)
Ignition switch
Operation or con-
dition
1 (W/G)
Ignition switch
OFF
0
ON
Battery voltage
2 (B)
Ground
ON
0
3 (L)
Engine speed signal
—
Idling
Approx. 4 - 6
4 (G/Y)
Exhaust control valve signal
(Open)
ON
CLOSE
0 - 1
OPEN
Battery voltage
5 (G/R)
Exhaust control valve signal
(Close)
CLOSE
Battery voltage
OPEN
0 - 1
6 (R/Y)
Accelerator pedal position signal
ON
Over half
More than approx. 2.4
Below half
Approx. 0 - 2.4
Condition
Exhaust control valve
Accelerator pedal
opening
Engine rpm
Below half (no-load)
Above approximate 4,830 rpm
Open
Below approximate 4,730 rpm
Close
Over half (loaded)
—
Open
PBIZ0004J
Terminals
Exhaust control valve
(+)
(-)
Connector
Terminal
(Wire color)
Ground
Open
Close
B73
4 (G/Y)
Battery voltage
0 - 1V
5 (G/R)
0 - 1V
Battery voltage
PBIC4626E
EX-10
DUAL MODE MUFFLER
Removal and Installation
NBS0028U
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.
●
Loosen lock nut A.
CAUTION:
Do not loosen positioning nuts B and C.
2.
Remove middle clamp bolt and cable.
INSTALLATION (CABLE)
Note the following, and install in the reverse order of removal.
●
Install cable on cable bracket and then tighten lock nut A to specified torque.
●
To avoid twisting the cable when tightening the lock nut A, hold the positioning nut B or C with a wrench.
●
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
3.
Remove actuator.
1.
Actuator mounting bracket
2.
Cover
3.
Cable
4.
Center muffler
5.
Exhaust control valve
(Do not disassemble.)
6.
Actuator
7.
Muffler control unit
PBIC4241E
PBIC4242E
DUAL MODE MUFFLER
EX-11
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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.
INSTALLATION
Install in the reverse order of removal.
PBIC0175E
EX-12
DUAL MODE MUFFLER
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