2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 948
* DTC P0036, P0037, P0038, P0130, P0137, P0138, P0140, P0141, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0443, P0458,
P0459, P2096, P2097, P2177, P2178, P2179, P2787, P2088, P2089, P2090, P2232, P2235, P2270, P2271, P2272, or P2273 is not set.
* The engine speed is 1,200-3,000 RPM.
* The HO2S 1 is in Closed Loop.
* The engine load is 18-75 %.
* The exhaust gas temperature is greater than 300掳C (572掳F).
* The evaporative purge (EVAP) solenoid valve is commanded OFF or ON for greater than 10 s.
* These DTCs run continuously when the conditions above exist.
Conditions for Setting the DTCs
The ECM determines that the length of time for an HO2S 1 to switch from lean to rich and back to lean, which is called a switching cycle, has
exceeded a predetermined threshold. The condition exists for 3 cycles out of a 20 cycle test sample.
Action Taken when the DTCs Set
DTCs P0133, P013A, and P013E are Type B DTCs.
Conditions for Clearing the MIL/DTCs
DTCs P0133, P013A, and P013E are Type B DTCs.
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. Verify that other DTCs are not set.
瀚慖f any other DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Engine idling at operating temperature, observe the appropriate B52 HO2S parameter with a scan tool. Verify the following:
* The B52 HO2S 1 value should vary from below 200 mV to above 800 mV and respond to fueling changes.
* The B52 HO2S 2 value should change greater than 200 mV when the throttle is quickly cycled 3 times from closed to wide open and
back to closed after running the engine at 1,500 RPM for 30 s.
3. Engine idling, observe the scan tool HO2S 1 voltage parameter. The voltage should fluctuate above and below the range of 350-550 mV.
4. Observe the DTC information with a scan tool. DTCs P0133, P013A, and P013E should not set.
5. 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.
Circuit/System Testing
1. Verify that none of the following conditions exist: