Mazda CX-9 Grand Touring 2007 Manual page 586

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
EVAP SYSTEM LEAK
Check for the presence of a fuel-
filler cap. Do not tighten or check
for correct installation at this time.
Verify that both the input port
vacuum hose and EVAP return
tube are attached to the CV
solenoid valve.
Verify that the CV solenoid valve
is properly attached to the charcoal
canister.
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
Check for damage to the fuel-filler
pipe and the fuel tank.
Is a concern visually evident?
5 INSPECT FOR EVAP SYSTEM
LEAKS
Disconnect the EVAP return tube
from the intake manifold and plug
the EVAP return tube.
Connect the EVAP System Leak
Tester to the EVAP test port.
Perform the EVAP System Leak
Test.
(see ENGINE CONTROL
SYSTEM OPERATION
INSPECTION [MZI-3.5] .)
Does the pressure stay above 1.99
kPa (PID FTP_H2O displays "8")?
6 INSPECT FOR BLOCKAGE
BETWEEN CV SOLENOID VALVE
AND FUEL VAPOR HOSE JOINT
Turn the ignition switch to the ON
2007 Mazda CX-9 Grand Touring
No
Yes
No
Yes
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.
Go to the next step.
Go to the next step.
Verify that the fuel-filler cap is installed
correctly. Repair or install a new
components if necessary. Go to Step 8.
Go to the next step.