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.
2007 Infiniti QX56 AWDFACTORY OEM SERVICE PROCEDURE
Throttle Position Sensor
- Reconnect all harness connectors disconnected.
- Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
- Turn ignition switch ON.
- Set selector lever to D position.
- Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions.TERMINALS VOLTAGE CHART
Terminal Accelerator pedal Voltage 50 (Throttle position sensor 1) Fully released More than 0.36V Fully depressed Less than 4.75V 69 (Throttle position sensor 2) Fully released Less than 4.75V Fully depressed More than 0.36V - If NG, replace electric throttle control actuator and go to the next step.
- Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
- Perform "IDLE AIR VOLUME LEARNING ".
Factory Service Tools
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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.