Suzuki XL7 2007 Service Manual page 229

Circuit/System Verification
1. 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 (if equipped)
– Loose or damaged fuel tank pressure (FTP)
sensor.
– 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.
NOTE
Refer to the J 41413-200 operation manual for
detailed instructions.
2. Remove the fuel fill cap. Connect the GE-41415-50
to the fuel tank filler neck. Connect the J 41413-200
to the GE-41415-50.
3. Calibrate the J 41413-200 Flow Meter to the correct
leak orifice for the vehicle.
4. Command the EVAP vent solenoid closed with a
scan tool.
NOTE
Larger volume fuel tanks and/or those with
lower fuel levels may require several minutes
for the floating indicator to stabilize.
5. Activate the J 41413-200 and compare the flow
meter's stable floating indicator position to the red
flag. The floating indicator should be below the red
flag.
➢ If the floating indicator is above the red flag, test for
a leak in the EVAP system.
➢ If the floating indicator is below the red flag, test for
a blockage or restriction in the EVAP system.
6. 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.
Engine General Information and Diagnosis:
Circuit/System Testing
Leak Testing
NOTE
• 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.
1. Connect the GE-41415-50 to the fuel tank filler neck.
Connect the J 41413-200 to the GE-41415-50.
2. Turn the nitrogen/smoke valve on the control panel
to SMOKE.
3. Command the EVAP vent solenoid closed with a
scan tool.
4. Use the remote switch to introduce smoke into the
EVAP system.
5. Use the J 41413-VLV to open the EVAP service port,
if equipped. Or, disconnect the EVAP purge pipe
from the purge solenoid. Once smoke is observed,
remove the tool, or reconnect the EVAP purge pipe.
NOTE
Introduce smoke at 15 second intervals while
testing the system.
6. Verify that smoke is not exiting the entire EVAP
system with the J 41413-SPT.
NOTE
The fuel tank may need to be lowered to
improve visibility of some of the EVAP
system components.
➢ If smoke is observed, repair the condition as
necessary.
7. Verify the EVAP system using the EVAP service port.
Connect the J 41413-200 nitrogen/smoke supply
hose to the EVAP service port. Connect the CH-
48096 EVAP Service Port Access Tool between the
EVAP purge solenoid and the EVAP purge pipe, if
necessary.
8. Command the EVAP vent solenoid closed with a
scan tool.
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