Mazda CX-9 Grand Touring 2009 Manual page 1361

If malfunction remains, inspect related Service Bulletins and/or On-line Repair
Information and perform repair or diagnosis.
3
NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [MZI-3.7]
NO.17 COOLING SYSTEM CONCERNS-OVERHEATING (MZI-3.7) DETECTION CONDITIONS
AND POSSIBLE CAUSES
17
DESCRIPTION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
NO.17 COOLING SYSTEM CONCERNS-OVERHEATING (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP INSPECTION
Inspect the following:
Engine coolant level
Coolant leakage
Water and anti-freeze mixture
Radiator condition
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
If vehicle is repaired, troubleshooting completed.
If vehicle is not repaired or additional diagnostic information is not available,
replace the PCM.
(See PCM REMOVAL/INSTALLATION [MZI-3.7] .)
COOLING SYSTEM CONCERNS-OVERHEATING
Engine runs at higher than normal temperature/overheats.
Improper coolant level
Blown fuses
Coolant leakage
Excessive A/C system pressure
A/C system operation is improper
Improper water/anti-freeze mixture
Fans reverse rotation
Poor radiator condition
Thermostat malfunction
Radiator hoses damage
Improper or damaged radiator cap
Cooling fan is inoperative.
Coolant overflow system malfunction
Improper tension of drive belt
Drive belt damage
RESULTS
Yes Go to the next step.
ACTION