Circuit/System Verification w/o Service Bay Test
- 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
- A damaged EVAP purge solenoid
- Disconnected, incorrectly routed, kinked, or damaged EVAP pipes and hoses
- A damaged EVAP vent valve or EVAP canister
- If you find any of the above conditions, repair as necessary.
- 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.
- Refer to the J 41413-200 operation manual for detailed instructions. See Special Tools .
- Calibrate the J 41413-200 Flow Meter to the correct leak orifice for the vehicle. See Special Tools .
- Remove the fuel fill cap. 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. Seal the EVAP vent using the correct plug from the J 41413-300 . See Special Tools .
- Activate the J 41413-200 and compare the flow meter's stable floating indicator position to the red flag. See Special Tools . The floating indicator should remain below the red flag.
- If the vehicle passes the Circuit/System Verification test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records List.
IMPORTANT:
IMPORTANT:
The EVAP vent solenoid valve will not remain closed when commanded ON with positive pressure applied to the EVAP system.
IMPORTANT:
Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize.