repair information availability.
z
Is any related Service Bulletins available?
to the next step.
No
Go to the next step.
3
INSPECT COOLING SYSTEM
z
An engine overheat condition is sensed by the
CHT sensor.
z
Check the cooling system for:
{
Correct coolant level
{
Internal or external coolant leaks
{
Blockage of the radiator
{
Cooling fan operation
z
Is the cooling system normal?
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 are sure all the pressure is gone,
press down on the cap using the cloth, turn
it, and remove it.
NOTE:
z
If the electric cooling fan does not operate,
go to the applicable DTC inspection. (See
DTC TABLE [MZI-3.7].)
Yes Go to the next step.
No Repair if necessary. Then go to the next
step.
4
INSPECT OPERATION OF THE CHT SENSOR
z
Run the engine until the engine temperature
stabilizes.
z
Verify the radiator hoses are hot and the
cooling system is pressurized.
z
Verify self-test DTCs.
z
Is DTC P1285 present?
Yes Go to the next step.
No
An engine overheat temperature was
not detected. Repair any other DTCs if
necessary.
INSPECT CHT SENSOR
Replace the CHT sensor, then go to the
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
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© 2005 Mitchell Repair Information Company, LLC.
