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Message: <blockquote data-quote="CC&#039;S95GT" data-source="post: 1075494" data-attributes="member: 10547">PO113- Circuit Description The Intake Air Temperature (IAT) sensor is a thermistor which measures the temperature of the air entering the engine. The PCM applies 5V through a pull up resistor to the IAT sensor. When the intake air is cold, the sensor resistance is high and the PCM will monitor a high signal voltage on the IAT signal circuit. If the intake air is warm, the sensor resistance is lower causing the PCM to monitor a lower voltage. DTC P0113 will set when the PCM detects an excessively high signal voltage on the intake air temperature sensor signal circuit.Conditions for Setting the DTC <ul> <li data-xf-list-type="ul">No active ECT sensor or VSS DTC present.</li> <li data-xf-list-type="ul">Vehicle speed is less than 35 mph.</li> <li data-xf-list-type="ul">Mass Air Flow is less than 12 gm/s.</li> <li data-xf-list-type="ul">Engine Coolant Temperature is greater than 60Â°C (140Â°F).</li> <li data-xf-list-type="ul">IAT signal voltage indicates an intake air temperature less than -37Â°C (-34Â°F).</li> <li data-xf-list-type="ul">The above conditions are present for at least 3 minutes.</li> </ul>Action Taken When the DTC Sets <ul> <li data-xf-list-type="ul">The PCM will illuminate the MIL during the second consecutive trip in which the diagnostic test has been run and failed.</li> <li data-xf-list-type="ul">The PCM will store conditions which were present when the DTC set as Freeze Frame and Fail Records data.</li> </ul>Conditions for Clearing the MIL/DTC <ul> <li data-xf-list-type="ul">The PCM will turn the MIL OFF during the third consecutive trip in which the diagnostic has been run and passed.</li> <li data-xf-list-type="ul">The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.</li> <li data-xf-list-type="ul">The DTC can be cleared by using a scan tool.</li> </ul>Diagnostic Aids Check for the following conditions:<ul> <li data-xf-list-type="ul">Poor connection at PCM. Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.</li> <li data-xf-list-type="ul">Damaged harness. Inspect the wiring harness for damage. If the harness appears to be OK, observe the IAT display on the scan tool while moving connectors and wiring harnesses related to the IAT sensor. A change in the IAT display will indicate the location of the fault.</li> <li data-xf-list-type="ul">The Temperature vs. Resistance table may be used to test the IAT sensor at various temperatures to evaluate the possibility of a shift sensor that may be open above or below a certain temperature. If this is the case, replace the IAT sensor. If the IAT sensor appears to be OK, the fault is intermittent. Refer to Diagnostic Aids above.</li> </ul></blockquote>