No.17 Cooling System Concerns-Overheating: Notes

17	COOLING SYSTEM CONCERNS-OVERHEATING
DESCRIPTION	Engine runs at higher than normal temperature/overheats.
POSSIBLE CAUSE	Improper coolant level Coolant leakage (engine internal, turbocharger, external) Improper water/anti-freeze mixture Poor radiator condition Radiator hose damage Improper or damaged radiator pressure cap Coolant overflow system malfunction Fans reverse rotation Blown fuse PCM DTC is stored Improper operation of A/C system Excessive A/C system pressure Cooling fan inoperative Drive belt damage Improper drive belt tension Leakage coolant from heater unit in passenger compartment Leakage at coolant hoses and/or radiator Improper indication of low engine coolant temperature indicator light/high engine coolant warning light ECT sensor No.1 malfunction Instrument cluster malfunction Thermostat malfunction

COOLING SYSTEM CONCERNS-OVERHEATING

DESCRIPTION

POSSIBLE CAUSE

Improper coolant level
Coolant leakage (engine internal, turbocharger, external)
Improper water/anti-freeze mixture
Poor radiator condition
Radiator hose damage
Improper or damaged radiator pressure cap
Coolant overflow system malfunction
Fans reverse rotation
Blown fuse
PCM DTC is stored
Improper operation of A/C system
Excessive A/C system pressure
Cooling fan inoperative
Drive belt damage
Improper drive belt tension
Leakage coolant from heater unit in passenger compartment
Leakage at coolant hoses and/or radiator
Improper indication of low engine coolant temperature indicator light/high engine coolant warning light
- ECT sensor No.1 malfunction
- Instrument cluster malfunction
Thermostat malfunction