2010 Cadillac CTS Sedan AWD V6-3.6L Page 1023
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
* DTCs P0112, P0113, and P0114 are Type B DTCs.
* The ECM commands the cooling fans ON.
Conditions for Clearing the DTC
DTCs P0112, P0113, and P0114 are Type B DTCs.
Diagnostic Aids
* Depending on the ambient temperature, an IAT sensor signal circuit or low reference circuit that is shorted to the MAF sensor signal circuit
can cause a DTC P0113 and/or P0114 to set. This condition causes a rapid fluctuation in the IAT Sensor parameter.
* An IAT sensor signal circuit that is shorted to the MAF sensor ignition circuit can cause a DTC P0113 and/or P0114 to set.
* A MAF sensor ground circuit that is open will cause a DTC P0113 and/or a DTC P0114 to set.
Reference Information
Schematic Reference
Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics
(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Engine running, observe the scan tool IAT Sensor parameter. The reading should be between -40 to +149掳C (-40 to +300掳F) depending on
the current ambient temperature and the vehicle operating conditions.
2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
