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Home >> Infiniti >> 2005 >> QX56 RWD >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0122, P0123: TP Sensor >> Component Inspection >> Throttle Position Sensor
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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 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions.
    Fig 1: Throttle Position Sensor Terminal Voltage Specification
    G02388692Courtesy 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 ".
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