2010 Cadillac Truck SRX FWD V6-3.0L Page 1137
* DTC P0112, P0113, P0117, P0118 or P2610 is not set.
* The engine run time of the previous ignition cycle was greater than 10 min.
* The calculated engine cool down of the previous test was greater than 50掳C (120掳F).
* The ignition was OFF for greater than 330 min after the previous engine shut down.
* The accumulated air mass of the previous ignition cycle was greater than 6,000 grams.
* The DTC runs once an ignition cycle when the above conditions are met for greater than 35 s.
Condition 2
* Before the ECM can report DTC P0116 failed, DTC P0101 must run and pass.
* DTCs P0112, P0113, P0117, P0118 are not set.
* The ECT at the previous engine shut down is warmer than 82掳C (180掳F).
* The block heater is not detected.
* The ignition was OFF for greater than 330 min after the previous engine shut down.
* DTC runs once an ignition cycle when the above conditions are met.
Conditions for Setting the DTC
* The ECM determines the difference between the ECT and IAT at ignition ON is not within 14掳C (25掳F) of the difference recorded during a
previous ignition cycle, when the enable conditions were met.
OR
* The ECM determines the IAT at ignition ON is within a calibrated range of the ECT and IAT recorded during a previous ignition cycle, but
the ECT is not within 14掳C (25掳F) of the calibrated range.
Action Taken When the DTC Sets
DTC P0116 is a Type A/B DTC.
Conditions for Clearing the MIL/DTC
DTC P0116 is a Type A/B DTC.
Diagnostic Aids
* Test the ECT and the IAT sensor at various temperature levels in order to evaluate the possibility of a skewed sensor. A skewed sensor can
result in a DTC or a driveability condition. Refer to Temperature Versus Resistance - Engine Coolant Temperature Sensor (See: Powertrain
Management/Computers and Control Systems/Specifications/Temperature Versus Resistance - Engine Coolant Temperature Sensor) and
Temperature Versus Resistance - Intake Air Temperature Sensor (See: Powertrain Management/Computers and Control
Systems/Specifications/Temperature Versus Resistance - Intake Air Temperature Sensor).
* If the vehicle has sat overnight, the IAT sensor and the ECT sensor values should display within 3掳C (5掳F).
* After starting a cold engine, the ECT sensor temperature should rise steadily, then stabilize after the thermostat opens.
* High resistance in the circuits of either the ECT or IAT sensor could set a DTC.
* A short to ground or voltage through a conductive material or fluid could set this DTC. Inspect the ECT sensor for evidence of engine
coolant leaking into the connector body.
Reference Information
Schematic Reference
Engine Controls Schematics (LAU) (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/Connector End Views By Name)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/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
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