Circuit/System Testing
- 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
. See Special Tools
.
- Seal the system using the Purge Seal function with a scan tool.
- Pressurize the EVAP system with nitrogen to 5 inches H2O. Compare the Fuel Tank Pressure Sensor parameter to the J 41413-200
pressure/vacuum gage. See Special Tools
. The FTP sensor should be within 1 inch H2O of the pressure/vacuum gage.
- If the FTP is not within 1 inch H2O of the pressure/vacuum gage, replace the FTP sensor.
- Command the vent solenoid valve OPEN with a scan tool.
- If the FTP sensor parameter is not 0 inch H2O, replace the FTP sensor.