Mazda CX-9 Grand Touring 2007 Manual page 695

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
DTC P1285 P1285: Cylinder head over temperature condition
DTC P1299 P1299: Cylinder head over temperature protection active
DETECTION
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC P1285, P1299 (MZI-3.5) DIAGNOSTIC PROCEDURE
STEP
1 VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
Has FREEZE FRAME DATA
been recorded?
2 VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
and/or on-line repair information
availability.
Is any related Service Bulletins
available?
3 INSPECT COOLING SYSTEM
WARNING:
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.
Turn off the engine and wait
until it is cool. Even then, be
2007 Mazda CX-9 Grand Touring
P1285 indicates that an engine overheat condition was sensed by the CHT
sensor.
P1299 indicates that an engine overheat condition was detected by the CHT
sensor.
Fail-safe function was activated to cool the engine.
Low engine coolant level
Base engine malfunction
Engine cooling system malfunction
CHT sensor malfunction
INSPECTION ACTION
Yes Go to the next step.
No Record FREEZE FRAME DATA on the
repair order, then go to the next step.
Yes Perform repair or diagnosis according to
the available Service Bulletins.
If the vehicle is not repaired, go to
the next step.
No Go to the next step.
Yes Go to the next step.