Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSINFINITI2002Q45 V8-4.5L (VK45DE)REPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTEXHAUST SYSTEMACTIVE EXHAUST SYSTEM CONTROL MODULESERVICE AND REPAIR
2002 Infiniti Q45 V8-4.5L (VK45DE)
Active Exhaust System Control Module: Service and Repair
2002 Infiniti Q45 V8-4.5L (VK45DE)SECTION Service and Repair
NOTE: Exhaust control valve is provided in center muffler and not permitted to disassemble.
DUAL MODE MUFFLER SYSTEM / Actuator, Exhaust Control Valve, Cable & Muffler Control Unit:
REMOVAL (MUFFLER CONTROL UNIT)
1. Open trunk lid, and remove trunk side finisher (right).
2. Remove muffler control unit fixing bolt.
3. Remove harness connector and 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.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.