Tools Required
J 41413-200 EVAP Pressure/Purge Diagnostic
Station
Inspection Procedure
Important: Do not perform this procedure unless instructed
by an evaporative emission (EVAP) diagnostic.
- Turn OFF the ignition.
- Remove the EVAP canister purge solenoid. Refer to
Evaporative Emission Canister Purge Solenoid Valve Replacement
.
- Lightly tap the EVAP canister purge valve on a clean hard surface.
- Inspect for carbon particles exiting either of the vacuum ports.
• | If you were instructed to replace the EVAP canister purge solenoid, and
no carbon particles are found, return to the EVAP diagnostic procedure. Do not perform
the EVAP cleaning procedure. |
EVAP Cleaning Procedure
- Remove the EVAP canister. Refer to
Evaporative Emission Canister Replacement .
- Turn OFF the main valve on
J 41413-200
.
- Disconnect the hose from the diagnostic station pressure regulator.
- Using a section of vacuum hose, connect one end to the diagnostic station
pressure regulator.
- Connect the other end of the vacuum hose to the canister side of the purge
pipe.
- Turn ON the main nitrogen cylinder valve and continue to discharge nitrogen
for 15 seconds.
- If the nitrogen does not dislodge the carbon particles, replace the purge
pipe.
- Return the EVAP pressure/purge diagnostic station to the stations original
condition.
- Install a new EVAP canister. Refer to
Evaporative Emission Canister Replacement .
- Connect all previously disconnected EVAP pipe connectors.
- Lower the vehicle.
- Continue with the published service manual diagnostic DTC procedure.