2001 Infiniti Q45 BaseFACTORY OEM SERVICE PROCEDURE

Throttle Position (TP) Sensor

THROTTLE POSITION (TP) SENSOR OUTPUT VOLTAGE

Throttle Position Volts
G20 & Q45
Fully Closed .15-.85
Fully Open 3.5-4.7
SECONDARY TP SENSOR RESISTANCE (Q45)

Secondary Throttle Valve Position Ohms @ 77Β°F (25Β°C)
Fully Open About 5000
Partially Open 600-4000
Fully Closed About 600
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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