2010 Cadillac Truck SRX AWD V6-3.0L Page 1129
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0112
- Intake Air Temperature (IAT) Sensor Circuit Low Voltage
DTC P0113
- Intake Air Temperature (IAT) Sensor Circuit High Voltage
DTC P0114
- Intake Air Temperature (IAT) Sensor Circuit Intermittent
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The intake air temperature (IAT) sensor is a variable resistor. It is integrated into the mass air flow (MAF) sensor. The IAT sensor has a signal
circuit and a low reference circuit. The IAT sensor measures the temperature of the air entering the engine. The engine control module (ECM)
supplies 5 V to the IAT signal circuit, and a ground for the IAT low reference circuit.
Conditions for Running the DTC
P0112
* The engine run time is greater than 1 s.
* The DTC runs continuously when the above conditions are met.
P0113
* The engine run time is greater than 1 s.
* The DTC runs continuously when the above conditions are met.
P0114
* The ignition is ON or the engine is running.
* This DTC runs continuously within the enabling conditions.
Conditions for Setting the DTC
P0112
The ECM detects that the IAT sensor signal is warmer than 149掳C (300掳F) for greater than 7 s.
P0113
The ECM detects that the IAT sensor signal is colder than -60掳C (-76掳F) for greater than 7 s.
P0114
The ECM detects that the IAT sensor signal is intermittent or has abruptly changed for greater than 4 s.
Action Taken When the DTC Sets
