z
Verify that the battery is fully
charged.
z
Verify that there is clean sufficient
fuel.
z
Is a concern present?
4
INSPECT ALL SYSTEM RELATED
DEVICES (SENSOR, DAMPER OR
REGULATOR) FOR LEAKAGE
z
Turn the ignition switch off.
z
Connect the fuel pump connector.
z
Turn the ignition switch to the ON
position (Engine running).
z
Check for manifold vacuum at
each system related component
with a vacuum line.
z
Turn the ignition switch off.
z
Wait 10 s.
z
Turn the ignition switch to the ON
position (Engine running).
z
Run the engine for approx. 10 s.
z
Turn the ignition switch off.
z
Remove the vacuum hose on each
system device connected to the
fuel rail.
z
Inspect for the presence of fuel in
the vacuum line of each device
connected to the fuel rail.
z
Are all vacuum lines for system
related devices indicating no fuel
present?
Yes
Go to the next step.
No
If the vacuum line connected to a
component indicates that a fuel leak is
present, install a new component. Then go
to Step 11.
5
INSPECT FUEL PRESSURE
z
Turn the ignition switch off.
z
Relieve the fuel pressure. Refer to
the Workshop Manual Fuel
System Pressure Release
procedure.
z
Connect the mechanical fuel
pressure gauge.
z
Turn the ignition switch to the ON
position (Engine off).
Yes
Go to Step 9.
No
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 9:26:30 AM
Page 106
© 2005 Mitchell Repair Information Company, LLC.