EVAP Cleaning Procedure

1. Remove the EVAP canister.
2. Turn OFF the main valve on the J 41413 EVAP pressure/purge diagnostic station.
3. Disconnect the hose from the diagnostic station pressure regulator.
4. Using a section of vacuum hose, connect one end to the diagnostic station pressure regulator.
5. Connect the other end of the vacuum hose to the canister side of the purge pipe.
6. Turn on the main nitrogen cylinder valve and continue to discharge nitrogen for 15 seconds.
7. If the nitrogen does not dislodge the carbon particles, replace the purge pipe. Refer to Evaporative Emission (EVAP) System Hoses/Pipes Replacement.
8. Return the EVAP Pressure/Purge Diagnostic Station to its original condition.
9. Install a new EVAP canister.
10. Connect all previously disconnected EVAP pipe connectors.
11. Lower the vehicle.
12. Continue with the published diagnostic DTC procedure.