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.

2004 Infiniti Q45FACTORY OEM SERVICE PROCEDURE

Intake Valve Timing Control Position Sensor

Disconnect intake valve timing control position sensor harness connector.
Loosen the fixing bolt of the sensor.
Remove the sensor.
Visually check the sensor for chipping.

Fig 1: Checking INTAKE VALVE TIMING CONTROL POSITION SENSOR
Courtesy of NISSAN MOTOR CO., U.S.A.
Check resistance as shown below.

Fig 2: Checking Intake Valve Timing Control Position Sensor Resistance (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.
If NG, replace intake valve timing control position sensor.

Fig 3: Checking Intake Valve Timing Control Position Sensor Resistance (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

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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