Overheats Or Water Temperature High
NOTE:
Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING
article for testing procedures.
- Check ECT sensor circuit.
- Check main power supply and ground circuit.
- Check cooling fan.
- Check ECM.
- Check cylinder head gasket.
- Check radiator, hose and filler cap.
- Check thermostat, water pump and water gallery.
- Check coolant level and contamination.