2
AVAILABILITY
z
Verify related Service Bulletins and/or on-
line repair information availability.
z
Is any related Service Bulletins available?
Yes
the available Service Bulletins.
z
If the vehicle is not repaired, go to
the next step.
No
Go to the next step.
3
INSPECT ENGINE COOLANT LEVEL
z
Is the engine coolant fill level correct?
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
stop. Step back while the pressure
escapes.
z
When you're sure all the pressure is gone,
press down on the cap using the cloth,
turn it, and remove it.
Yes Go to the next step.
No
Inspect for a loss of engine coolant.
Repair if necessary. (See
ENGINE
COOLANT LEVEL INSPECTION
[MZI-3.7]
.)
Go to Step 5.
4
INSPECT SENSOR OPERATION
z
Run the engine until the engine temperature
stabilizes.
z
Verify that the radiator hoses are hot and the
cooling system is pressurized.
z
Access the PCM and monitor the CHT PID.
z
Is the temperature more than 77°C {170.6°
F}?
Yes The test is complete. Go to the next step.
No
Inspect the thermostat operation. Repair
if necessary. (See
THERMOSTAT
INSPECTION [MZI-3.7]
.)
5
VERIFY TROUBLESHOOTING OF DTC
P0128 HAS BEEN COMPLETED
z
Verify that all disconnected connectors are
reconnected.
z
Turn the ignition switch to the ON position
(Engine off).
z
Clear the DTC from the PCM memory using
the M-MDS.
Yes
Replace PCM, then go to the next step.
(See
PCM
REMOVAL/INSTALLATION [MZI-
3.7]
.)
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:35 AM
Page 82
© 2005 Mitchell Repair Information Company, LLC.
