2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1072

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1072

* The start up intake air temperature (IAT) is less than 75掳C (167掳F).

* The difference between intake temperature (IAT) and intake air temperature at last engine shut down is less than 20掳C (70掳F).

* The engine run time is greater than 60 s.

* The DTC runs continuously once the above conditions are met.

P0118

* The engine is operating.

* DTC's P0116, P0117 or P0119 are not set.

* The start up intake air temperature (IAT) is less than 75掳C (167掳F).

* The difference between intake temperature (IAT) and intake air temperature at last engine shut down is less than 20掳C (70掳F).

* The DTC runs continuously once the above condition is met.

Conditions for Setting the DTC

P0117

The ECM detects that the ECT is greater than 140掳C (284掳F) for greater than 1 s or a cumulative of 10 s.

P0118

The ECM detects that the ECT is less than -39掳C (-38掳F) for greater than 1 s or a cumulative of 10 s.

Action Taken When the DTC Sets

DTC P0117 and P0118 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTC P0117 and P0118 are Type B DTCs.

Diagnostic Aids

* Test the ECT 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).

* 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.

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

Circuit/System Verification

1. Engine idling for 1 min. Observe the DTC information with a scan tool. DTCs P0117 and P0118 should not set.

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