Mazda CX-9 Grand Touring 2009 Manual page 1066

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Re-tighten the fuel-filler cap then carry out
the EVAP system leak inspection using the
M-MDS again. (See ENGINE CONTROL
5
SYSTEM OPERATION INSPECTION
[MZI-3.7] .)
Is small or large leakage detected?
VISUALLY INSPECT COMPONENTS FOR
SMALL LEAKS
Verify that the CV solenoid valve is
properly seated on the charcoal canister.
Visually inspect for cut or loose connections
to the fuel vapor hoses/tubes in the
following locations:
Charcoal canister to CV solenoid
6
valve.
Charcoal canister to evaporative
emission valve component.
Evaporative emission valve
component to the fuel tank (if
applicable).
Check for fuel-filler pipe damage.
Is a concern with a hose, tube, connection,
or valve visually evident?
INSPECT FOR SMALL LEAKS AT FUEL-
FILLER CAP
Turn the ignition switch to the ON position
(Engine off)
7
Close CV solenoid valve using the
EVAPCV PID.
Using the EVAP system tester, check for
leaks around the fuel-filler cap.
Is a leak detected?
VISUALLY INSPECT FUEL-FILLER CAP
AND FUEL-FILLER PIPE
Visually inspect the fuel-filler cap and fuel-
8
filler pipe for damage.
Is the fuel-filler cap or fuel-filler pipe
damaged?
INSPECT FOR SMALL LEAK WITH
TESTER SET AT FILL POSITION
2008 Mazda CX-9 Grand Touring
Yes Go to the next step.
No
Yes
No
Yes Go to the next step.
No
Yes
No
Go to Step 14.
Repair or install a new component if
necessary. Go to Step 13.
Go to the next step.
Go to Step 9.
Replace the malfunctioning parts, then go
to Step 13.
Go to the next step.