Circuit/System Testing
- 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.
- Turn the nitrogen/smoke valve on the control panel to SMOKE.
- Lower the EVAP purge canister to gain access to the EVAP vent inlet, and seal it, using a suitable plug or a plug from the J 41413-300 . See Special Tools .
- Use the remote switch to introduce smoke into the EVAP system.
- Use the J 41413-VLV to open the EVAP service port. See Special Tools . Once smoke is observed, remove the tool.
- Verify that smoke is not exiting the entire EVAP system with the J 41413-SPT
. See Special Tools
.
- If smoke is observed, repair the condition as necessary.
IMPORTANT: The fuel tank may need to be lowered to improve visibility of some of the EVAP system components. - Verify the EVAP system using the EVAP service port. Connect the J 41413-200 nitrogen/smoke supply hose to the EVAP service port. See Special Tools .
- Use the remote switch to introduce smoke into the EVAP system.
- Verify that smoke is not exiting the entire EVAP system with the J 41413-SPT
. See Special Tools
.
- If smoke is observed, repair the condition as necessary.
- Verify the individual EVAP system components for a leak using the J 41413-300
. See Special Tools
. The EVAP system components should not leak.
- If a condition is found replace the affected component.
IMPORTANT:
IMPORTANT:
Introduce smoke at 15 second intervals while testing the system.