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 DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPROGRAMMING AND RELEARNINGTHROTTLE VALVE CLOSED POSITION LEARNING
2002 Infiniti Q45 V8-4.5L (VK45DE)
Throttle Valve Closed Position Learning
2002 Infiniti Q45 V8-4.5L (VK45DE)SECTION Throttle Valve Closed Position Learning
Description
"Throttle Valve Closed Position Learning" is an operation to learn the fully closed position of the throttle valve by monitorizing the throttle position sensor output signal. It must be performed each time harness connector of electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Turn ignition switch "ON".
2. Turn ignition switch "OFF" wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
"Throttle Valve Closed Position Learning" is an operation to learn the fully closed position of the throttle valve by monitorizing the throttle position sensor output signal. It must be performed each time harness connector of electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Turn ignition switch "ON".
2. Turn ignition switch "OFF" wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
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.