LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2005 >> FX35 RWD >> Repair and Diagnosis >> Engine Performance >> Engine Control System - VQ35DE >> DTC P0122, P0123: TP Sensor >> Component Inspection >> Throttle Position Sensor
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Throttle Position Sensor

  1. Reconnect all harness connectors disconnected.
  2. Perform "THROTTLE VALVE CLOSED POSITION LEARNING  ".
  3. Turn ignition switch ON.
  4. Set selector lever to D position.
  5. Check voltage between ECM terminals 50 (TP sensor 1signal), 69 (TP sensor 2signal) and body ground under the following conditions.
    ACCELERATOR PEDAL POSITION

    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
    Fig 1: Checking Voltage Between ECM Terminals 50 (TP Sensor 1Signal), 69 (TP Sensor 2Signal) And Body Ground
    G02360374Courtesy of NISSAN MOTOR CO., U.S.A.
  6. If NG, replace electric throttle control actuator and go to the next step.
  7. Perform "THROTTLE VALVE CLOSED POSITION LEARNING  ".
  8. Perform "IDLE AIR VOLUME LEARNING  ".