Evaporative Emission System Cleaning - Suzuki XL7 2007 Service Manual

Evaporative Emission System Cleaning

Special tool
J 41413-200 Evaporative Emission System Tested
Inspection Procedure
CAUTION
!
Refer to Clean, Dry, Low Pressure Gas
Source Notice.
NOTE
Proceed with the following procedure only if
referenced by an evaporative emission
(EVAP) diagnostic or repair procedure.
1. Turn OFF the ignition.
2. Remove the EVAP canister purge valve. Refer to
"Evaporative Emission Canister Purge Solenoid
Valve Replacement".
3. Lightly tap the EVAP canister purge valve on a hard
surface.
4. Inspect for carbon particles exiting either of the
vacuum ports.
– If no carbon particles were detected, but a
blockage was detected during a diagnostic
procedure, install the original EVAP canister purge
valve. Continue with the cleaning procedure.
– If carbon particles are found during the inspection
procedure, continue with the cleaning procedure.
– If a diagnostic procedure directed you to replace
the EVAP canister purge valve and no carbon
particles were detected, replace the EVAP
canister purge valve. Return to the published
service procedure.
Aux. Emission Control Devices:
Cleaning Procedure
1. Raise and support the vehicle. Refer to "Lifting and
Jacking the Vehicle: ".
2. Remove the EVAP canister. Refer to "Evaporative
Emission Canister Replacement".
3. Turn OFF the main valve on the J 41413-200.
4. Disconnect the hose from the diagnostic station
pressure regulator.
5. Using a section of vacuum hose, connect one end
onto the EVAP pressure/purge diagnostic station
pressure regulator.
6. Connect the other end of the vacuum hose to the
canister side of the purge pipe.
7. Turn ON the main nitrogen cylinder valve and
continue to discharge nitrogen for 15 seconds.
8. If the nitrogen does not clear the blockage, replace
the purge pipe.
9. Return the EVAP pressure/purge diagnostic station
to the stations original condition.
10. Install a new EVAP canister. Refer to "Evaporative
Emission Canister Replacement".
11. Lower the vehicle.
12. Install a new EVAP canister purge valve. Refer to
"Evaporative Emission Canister Purge Solenoid
Valve Replacement".
13. Return to the diagnostic table that sent you here.
1B-15