Circuit/System Testing
- Verify DTCs P0443, P0458, P0459, P0498, P0499, P0451, P0452, P0453, or P0454 are not set.
- If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Disconnect the purge line from the EVAP purge valve.
- Ignition ON, observe the fuel tank pressure sensor parameter with a scan tool. The FTP sensor parameter should be 0 in H2O. If the pressure is not at 0 in H2O, verify the FTP sensor voltage is less than 4.7 volts.
- If the FTP sensor voltage is more than 4.7 volts, refer to DTC P0452 or P0453 .
- Reconnect all previously disconnected EVAP hardware.
- Remove the fuel fill cap and connect the GE-41415-50 to the fuel tank filler neck. See Special Tools . Connect the J 41413-200 to the GE-41415-50 . See Special Tools .
- Disconnect the EVAP vent line from the vent solenoid, and seal it, using a suitable plug or a plug from the J 41413-300 . See Special Tools .
- Turn the nitrogen/smoke valve on the J 41413-200 to nitrogen. See Special Tools .
- Use the remote switch to activate the J 41413-200 and pressurize the fuel tank with nitrogen to 5 in H20. See Special Tools .
- While observing the FTP sensor parameter with a scan tool, remove the EVAP vent valve plug. Verify the FTP Sensor parameter is 0 in H2O.
- If the FTP is not at the specified value, test for a blockage or a restriction in the EVAP vent hose.
- If all hoses/pipes test OK, replace the EVAP vent solenoid valve
IMPORTANT:
Refer to the J 41413-200
Evaporative Emissions System Tester (EEST) operation manual for detailed instructions. See Special Tools
.
IMPORTANT:
DO NOT exceed the specified value in this step. Exceeding the specified value may produce incorrect test results.