Cooling System Concerns-Overheating: Outline
COOLING SYSTEM CONCERNS-OVERHEATING (SKYACTIV-G) DESCRIPTION AND POSSIBLE CAUSE
| Troubleshooting item |
Cooling system concerns-overheating |
| Description |
- The engine coolant temperature is abnormally high.
|
| Possible cause |
- Engine heat generation amount is excessive
- Engine speed is high and remains high for continuous long periods
- PCM detects DTCs
- Improper operation of A/C system
- Insufficient air blow volume
- Cooling fan inoperative
- Fan rotation speed decreases (such as generator malfunction) due to battery voltage decrease
- ECT sensor malfunction (value lower than actual engine coolant temperature detected)
- Cooling system cap malfunction
- Cooling fan motor component malfunction
- Cooling fan motor component connector malfunction
- Improper indication of high engine coolant temperature warning indication
- Improper operation of high engine coolant temperature warning light
- ECT sensor signal error
- Instrument cluster malfunction
- Fuse is damaged.
- Engine coolant system malfunction
- Improper engine coolant level
- Engine coolant performance deterioration
- Coolant leakage (engine internal, external)
- Improper water/anti-freeze mixture
- Thermostat malfunction (not fully open)
- Radiator malfunction (clogging)
- Foreign matter penetration into engine coolant
- Leakage around heater unit in passenger compartment
- Drive belt wear
|
| System wiring diagram |
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