4
z
Verify kinks or bends in the fuel
vapor hoses and tubes.
z
Visually inspect the charcoal
canister inlet port, CV solenoid
valve, EVAP dust separator or the
outlet hose for contamination or
foreign material.
z
Is a concern evident?
Yes
Remove any contamination or foreign material
around fuel vapor hoses and tubes.
Repair the hoses, tubes or components if
necessary. Go to Step 9.
No
Go to the next step.
5
PERFORM EVAP LEAK TEST
z
Connect the EVAP Leak Tester to
the fuel filler pipe.
z
Close the purge solenoid valve using
the EVMV PID.
z
Pressurize the EVAP system to
3.48
kPa
(PID FTP_H2O displays "14").
z
Does the pressure reach
3.48 kPa
(PID FTP_H2O displays "14")?
Yes Go to the next step.
No
Check to see if the CV solenoid valve is stuck
open. Replace if necessary.
(See
CHARCOAL CANISTER, CANISTER
VENT (CV) SOLENOID VALVE, AIR
FILTER COMPONENT
REMOVAL/INSTALLATION [MZI-3.7]
.)
Go to Step 9.
6
INSPECT WHETHER CV SOLENOID
VALVE IS STUCK CLOSED
z
Open the purge solenoid valve using
the EVMV PID.
z
Does the pressure drop
immediately?
Yes Go to the next step.
No
Check to see if the CV solenoid valve is stuck
closed. Replace if necessary.
(See
CHARCOAL CANISTER, CANISTER
VENT (CV) SOLENOID VALVE, AIR
FILTER COMPONENT
REMOVAL/INSTALLATION [MZI-3.7]
.)
Go to Step 9.
7
INSPECT FOR FUEL TANK
PRESSURE SENSOR PID WITHOUT
PRESSURE APPLIED
z
Disconnect the charcoal canister
outlet tube at the charcoal canister.
z
Turn the ignition switch to the ON
position (Engine off)
z
Using M-MDS tester, select
Diagnostic Data Link.
z
Select PCM.
z
Select Active Command Modes.
z
Access FTP V PID and record the
reading.
z
Is the reading between 2.40 to 2.80
V?
Yes Go to the next step.
No
Replace the evaporative hose component.
(See
FUEL TANK PRESSURE SENSOR
INSPECTION [MZI-3.7]
.)
Go to the next step.
EVAP SYSTEM LEAK TEST
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:41 AM
Page 336
© 2005 Mitchell Repair Information Company, LLC.
