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Home >> Mazda >> 2012 >> 3 s Sport, 2.5L Eng VIN 5, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System MZR 2.0, MZR 2.5] >> No.17 Cooling System Concerns-Overheating >> Notes

No.17 Cooling System Concerns-Overheating: Notes

17 COOLING SYSTEM CONCERNS-OVERHEATING
DESCRIPTION 
  • Engine runs at higher than normal temperature/overheats.
POSSIBLE CAUSE 
  • Radiator hoses damage
  • Coolant leakage
  • Improper coolant level
  • Fans reverse rotation
  • Fuse malfunction
  • Coolant overflow system malfunction
  • Poor radiator condition
  • Improper or damaged radiator cap
  • Improper water/anti-freeze mixture
  • PCM, climate control unit, instrument cluster or multi information display DTC is stored
  • Improper operation of A/C system (always on)
  • Improper operation of cooling fan control system
  • Improper tension of drive belt
  • Leakage around heater unit
  • Leakage at coolant hoses and/or radiator
  • Thermostat malfunction
  • Improper indication of high engine coolant warning light
    • ECT sensor No.1 malfunction
    • Instrument cluster malfunction