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?
COMPONENT REMOVAL/INSTALLATION
[MZI-3.7]
.)
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-3.7]
.)
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 position (Engine off)
z
Using M-MDS tester, select the
Diagnostic Data Link.
z
Select the PCM.
z
Select the Active Command
Modes.
z
Select the Output Test Mode.
z
Close the CV solenoid valve
using the EVMV PID.
z
Pressurize the EVAP system to
3.48 kPa (PID FTP_H2O displays
"14").
Yes Go to the next step.
No
Replace the fuel tank vapor line(s). Go to Step 8.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:38 AM
Page 224
© 2005 Mitchell Repair Information Company, LLC.
