2010 Cadillac CTS Sedan AWD V6-3.6L Page 1429
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
Special Tools
* J 41413-SPT High Intensity White Light
* J 41413-VLV EVAP Port Vent Fitting Tool
* J 41413-200 Evaporative Emissions System Tester (EEST)
* J 41413-300 EVAP Cap and Plug Kit
* CH-48096 EVAP Service Port Access Tool
* GE-41415-50 Fuel Tank Cap Adapter
Circuit/System Verification
1. Verify the following conditions do not exist in the EVAP system:
* Loose, incorrect, missing, or damaged fuel fill cap
* Loose, missing, or damaged service port schrader valve, if equipped
* A damaged EVAP canister purge solenoid valve
* Disconnected, incorrectly routed, kinked, or damaged EVAP pipes and hoses
* A damaged EVAP vent valve or EVAP canister
瀚慖f you find any of the above conditions, repair as necessary.
Note: Refer to the J 41413-200 operation manual for detailed instructions.
2. Remove the fuel fill cap. Connect the GE-41415-50 to the fuel tank filler neck. Connect the J 41413-200 to the GE-41415-50 .
3. Calibrate the J 41413-200 Flow Meter to the correct leak orifice for the vehicle.
4. Command the EVAP vent solenoid closed with a scan tool.
Note: Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.
5. Activate the J 41413-200 and compare the flow meter's stable floating indicator position to the red flag. The floating indicator should be
below the red flag.
瀚慖f the floating indicator is above the red flag, test for a leak in the EVAP system.
瀚慖f the floating indicator is below the red flag, test for a blockage or restriction in the EVAP system.
6. 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
Leak Testing
Note:
* You must start with the Circuit/System Verification before proceeding with Circuit/System Testing.
* Ensure that the vehicle underbody temperature is similar to the ambient temperature and allow the surrounding air to stabilize before
starting the diagnostic procedure. The system flow will be less with higher temperatures.
1. Connect the GE-41415-50 to the fuel tank filler neck. Connect the J 41413-200 to the GE-41415-50 .
2. Connect the CH-48096 between the EVAP purge solenoid and the EVAP purge pipe.
3. Turn the nitrogen/smoke valve on the control panel to SMOKE.
4. Command the EVAP vent solenoid closed with a scan tool.
5. Use the remote switch to introduce smoke into the EVAP system.
6. Use the J 41413-VLV to open the EVAP service port. Once smoke is observed, remove the J 41413-VLV .
Note: Introduce smoke at 15 s intervals while testing the system.
7. Verify that smoke is not exiting the entire EVAP system with the J 41413-SPT .
Note: The fuel tank may need to be lowered to improve visibility of some of the EVAP system components.
瀚慖f smoke is observed, repair the condition as necessary.
8. Remove the J 41413-200 nitrogen supply hose from the GE-41415-50 , and remove the GE-41415-50 from the fuller neck.
