system work properly?
15
INSPECT OPERATION OF PURGE
SOLENOID VALVE
z
Inspect the purge control system
operation.
(see
ENGINE CONTROL
SYSTEM OPERATION
INSPECTION [MZI-3.5]
.)
z
Does the purge control system
work properly?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part
according to the purge control system
inspection results, then go to Step 18.
16
INSPECT PCV VALVE
OPERATION
z
Turn the ignition switch off.
z
Remove the PCV valve and
check the valve operation.
(see
POSITIVE CRANKCASE
VENTILATION (PCV)
VALVE INSPECTION [MZI-
3.5].
)
z
Is the PCV valve operation
normal?
Yes
Replace the PCV valve, then go to Step 18.
No
Go to the next step.
17
INSPECT SEALING OF ENGINE
COOLANT PASSAGE
WARNING:
z
Never remove the cooling
system cap or loosen the
radiator drain plug while the
engine is running, or when the
engine and radiator are hot.
Scalding engine coolant and
steam may shoot out and cause
serious injury. It may also
damage the engine and cooling
system.
z
Turn off the engine and wait
until it is cool. Even then, be
very careful when removing the
cap. Wrap a thick cloth around
it and slowly turn it
counterclockwise to the first
Yes
Air penetrates due to poor sealing of the
head gasket or other areas between the
combustion chamber and the engine coolant
passage. Repair or replace malfunctioning
parts, then 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 9:26:31 AM
Page 164
© 2005 Mitchell Repair Information Company, LLC.
