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.

2010 Infiniti M45 BaseFACTORY 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 the D position.

Check voltage between ECM terminal 50 (TP sensor 1 signal) and ground, ECM terminal 69 (TP sensor 2 signal) and ground under the following conditions.

VOLTAGE CONNECTOR TERMINALS REFERENCE CHART

Terminal	Accelerator pedal	Voltage
50 (Throttle position sensor 1)	Fully released	More than 0.36 V
50 (Throttle position sensor 1)	Fully depressed	Less than 4.75 V
69 (Throttle position sensor 2)	Fully released	Less than 4.75 V
69 (Throttle position sensor 2)	Fully depressed	More than 0.36 V

Fig 1: Checking Throttle Position Sensor Voltage

Courtesy of NISSAN MOTOR CO., U.S.A.

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.

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