DTC P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage

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    Circuit Description

    The Intake Air Temperature (IAT) sensor is a thermistor which measures the temperature of the air entering the engine. The PCM applies 5 volts through a pull-up resistor to the IAT sensor. When the intake air is cold, the sensor resistan...

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    Service Manual Table of Contents

    Document Tags

    Document Title: DTC P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage

    circuit

    intake

    temperature

    sensor

    engine

    monitor

    signal

    voltage

    conditions

    vehicle

    records

    data

    clear

    scan

    tool

    info

    diagnostic

    check

    poor

    connection

    harness

    terminal

    intermittent

    system

    ground

    procedures

    electrical

    diagnosis

    problem

    found

    repair

    signal circuit

    sensor ground

    ground circuit

    circuit terminal

    terminal connection

    repair repair

    repair procedures

    using scan tool

    powertrain board diagnostic

    check poor sensor

    poor sensor ground

    sensor ground circuit

    ground circuit terminal

    circuit terminal connection

    found repair repair

    repair repair procedures

    repair procedures electrical