injected. For example, when injecting smoke at the service port remove the fuel fill cap, or temporarily leave the vent open, until smoke is
observed, then close the system and continue testing. If using a fuel cap adapter at the filler neck, use the J 41413-VLV at the service port to
allow the system to fill faster.
* To help locate intermittent leaks using the J 41413-200, move all EVAP components while observing smoke with the J 41413-SPT.
* Individual components can be isolated and tested using adapters in the J 41413-300.
* A condition may exist where a leak in the EVAP system only exists under a vacuum condition. This type of leak may be detected by using
the scan tool Purge/Seal function to create a vacuum in the EVAP system and then observe the FTP parameter for vacuum decay.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Evaporative Emission Control System Description (See: Powertrain Management/Computers and Control Systems/Description and
Operation/Evaporative Emission Control System Description)
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
Special Tools
* CH-48096 EVAP Service Access Port Tool
* GE-41415-50 Fuel Tank Cap Adapter
* J 41413-200 Evaporative Emissions System Tester (EEST)
* J 41413-300 EVAP Cap and Plug Kit
* J 41413-311 EVAP Plug
* J 41413-SPT High Intensity White Light
* J 41413-VLV EVAP Service Port Vent Fitting
Circuit/System Testing
Important:
* Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.
* Refer to the J 41413-200 operation manual for detailed instructions in Evaporative Emission System Diagnosis (See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Evaporative Emission
System Diagnosis).
1. Disconnect the purge tube at the quick connector on the EVAP canister side of the purge solenoid valve and install the CH-48096 service
port adapter tool. Connect the J 41413-200 to the vehicle EVAP service port adapter.
2. Use a scan tool to seal the EVAP system.
3. Use the flow meter on the J 41413-200, calibrated to 0.51 millimeter (0.020 inch) to determine that there is no leak in the EVAP system.
锟斤拷If a leak is detected, use the J 41413-200 to apply smoke to the EVAP system at the service port or the purge tube until the leak is located
using the J 41413-SPT.
4. To test for a restriction in the purge path, connect the J 41413-200 nitrogen/smoke hose to the J 41413-311 brass cone adapter. Disconnect
the hose at the fuel cap end of theGE-41415-50. Connect the J 41413-311 to the disconnected hose on the GE-41415-50. Install the
GE-41415-50 filler neck end only to the vehicle.
5. Allow the engine to idle.
6. Use the Purge/Seal function to seal the system with a scan tool.
7. Command the EVAP canister purge solenoid valve to 30 percent.
