P0113

Diagnostic Chart:

Wiring Diagram:

CIRCUIT DESCRIPTION
The Intake Air Temperature (IAT) sensor is a thermistor that controls signal voltage to the Powertrain Control Module (PCM). When the air is cold. the sensor resistance is high. therefore the PCM will see a high signal voltage. As air warms, sensor resistance becomes less and voltage drops. This is a type B DTC.

CONDITIONS FOR SETTING THE DTC
- Engine operating for 8 minutes.
- IAT less than or equal to 0°C (0°F).
- Conditions met for 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
A possible poor performance problem may exist during cold weather operation.

CONDITIONS FOR CLEARING THE MIL/DTC
- The PCM will turn the MIL off after three consecutive trips without a fault condition.
- A History DTC will clear when forty consecutive warm-up cycles that the diagnostic does not fail (coolant temperature has risen 5°C (40°F) from start up coolant temperature and engine coolant temperature exceeds 71°C (160°F) that same ignition cycle.

DIAGNOSTIC AIDS
The scan tool displays intake air temperature in degrees centigrade. Refer to Intermittent Symptoms. A skewed sensor could result in poor driveability complaints.

TEST DESCRIPTION
Number(s) below refer to the Step number(s) on the Diagnostic Table.

2. This Step determines if P0113 is a hard failure or an intermittent condition.
3. This Step will determine if there is a wiring problem or a faulty PCM.