EVAP SYSTEM LEAK
z
Check for the presence of a fuel-
filler cap. Do not tighten or check
for correct installation at this time.
z
Verify that both the input port
vacuum hose and EVAP return
tube are attached to the CV
solenoid valve.
z
Verify that the CV solenoid valve
is properly attached to the charcoal
canister.
z
Visually inspect for disconnected
or cracked fuel vapor hoses/tubes
between the intake manifold and
the following components:
{
CV solenoid valve
{
Charcoal canister
{
Fuel shut-off valve
z
Check for damage to the fuel-filler
pipe and the fuel tank.
z
Is a concern visually evident?
necessary.
(see
FUEL TANK
REMOVAL/INSTALLATION [MZI-
3.5]
.)
(see
FUEL TANK PRESSURE
SENSOR INSPECTION [MZI-3.5]
.)
(see
CHARCOAL CANISTER,
CANISTER VENT (CV) SOLENOID
VALVE, AIR FILTER COMPONENT
REMOVAL/INSTALLATION [MZI-
3.5].
)
Go to Step 7.
No
Go to the next step.
5
INSPECT FOR EVAP SYSTEM
LEAKS
z
Disconnect the EVAP return tube
from the intake manifold and plug
the EVAP return tube.
z
Connect the EVAP System Leak
Tester to the EVAP test port.
z
Perform the EVAP System Leak
Test.
(see
ENGINE CONTROL
SYSTEM OPERATION
INSPECTION [MZI-3.5]
.)
z
Does the pressure stay above 1.99
kPa (PID FTP_H2O displays "8")?
Yes
Go to the next step.
No
Verify that the fuel-filler cap is installed
correctly. Repair or install a new
components if necessary. Go to Step 8.
6
INSPECT FOR BLOCKAGE
BETWEEN CV SOLENOID VALVE
AND FUEL VAPOR HOSE JOINT
z
Turn the ignition switch to the ON
Yes
Go to the next step.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:33 AM
Page 239
© 2005 Mitchell Repair Information Company, LLC.