Infiniti Q45. Manual - part 578

 

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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 

EX-10, "REMOVAL (CABLE)"

 . 

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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