Infiniti F50. Manual - part 557

DUAL MODE MUFFLER

EX-5

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DUAL MODE MUFFLER

PFP:20130

Removal and Installation

EBS00LS4

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.

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Loosen lock nut A.

●

Do not loosen positioning nuts B and C.

2.

Remove middle clamp bolt and cable.

INSTALLATION

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Install in the reverse order of removal.

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Install cable on cable bracket and then tighten lock nut A to specified torque.

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To avoid twisting the cable when tightening the lock nut A, hold the positioning nut B or C with a wrench.

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If the positioning nuts B and C are loosened, place the nut B so that span D becomes 17.5 mm (0.689 in)
to 18.5 mm (0.728 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-5, "REMOVAL (CABLE)"

 . 

1.

Bracket

2.

Cover

3.

Cable

4.

Center muffler

5.

Exhaust control valve 
(Do not disassemble.)

6.

Actuator

7.

Muffler control unit

SBIA0404E

PBIC0174E

EX-6

DUAL MODE MUFFLER

3.

Remove actuator.

INSTALLATION

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.

INSTALLATION

Install in the reverse order of removal.

PBIC0175E

DUAL MODE MUFFLER

EX-7

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Trouble Diagnoses

EBS00LS5

WIRING DIAGRAM

TBWM0176E

EX-8

DUAL MODE MUFFLER

PARTS LOCATION

INSPECTION OF VALVE OPERATION 

Check operation of valve and actuator by revving engine.

INSPECTION OF DUAL MODE MUFFLER ACTUATOR INPUT SIGNAL

Check voltage between terminals 1 and 2 of dual mode muffler actu-
ator harness connector and ground.

PBIC0175E

PBIC0177E

When accelerator pedal position sensor opening is below half in no-load condition:

    Valve should open at engine revolution above approximate 4,830 rpm. 

    Valve should close at engine revolution below approximate 4,730 rpm.

When accelerator pedal position sensor opening is over half in loaded condition: 

    Valve should open at engine revolution above approximate 475 rpm.

    Valve should close at engine revolution below approximate 375 rpm.

PBIZ0004J

Terminals

Input

signal

(Exhaust 

control valve)

Condition

Voltage V

(+)

(-)

Terminal

(Wire color)

1 (G/Y)

GND

Open

ING ON

Battery voltage

(11 - 14)

0 - 1

2 (G/R)

Close

0 - 1

Battery voltage

(11 - 14)

PBIC0178E