| Engine overheats |
- Check the coolant level.
- Check for any engine coolant leakage (from gaskets, hoses, O-rings, etc.).
- Check for dirt, leaves, or insects on radiator and A/C condenser.
- Check for deteriorated coolant.
- Check for a damaged or deformed fan shroud.
- Check that the fan motors are operating properly (air should be blowing toward the engine).
- Inspect the fan motors (see
FAN MOTOR TEST
) or fan relays (see
POWER RELAY TEST
).
- Check the radiator cap (see
RADIATOR CAP TEST
).
- Check the thermostat (see
FAN MOTOR TEST
).
- Inspect the water pump (see
WATER PUMP INSPECTION
).
- Check for plugged or deteriorated radiator hoses.
- Check for plugged heater core or hoses.
- Check for a damaged cylinder head gasket.
|
Check the radiator and A/C condenser fan are operating properly |
| The radiator fan does not run at high speed |
Radiator fan high speed circuit troubleshooting (see RADIATOR FAN HIGH SPEED CIRCUIT TROUBLESHOOTING ). |
Check the connectors are properly connected and the terminals are making good contact |
| Both the radiator fan and the A/C condenser fan do not run at low speed |
Radiator and A/C condenser fans low speed circuit troubleshooting (see
RADIATOR AND A/C CONDENSER FAN LOW SPEED CIRCUIT TROUBLESHOOTING
). |
Check the connectors are properly connected and the terminals are making good contact |
| The A/C condenser fan does not run at high speed |
A/C condenser fan high speed circuit troubleshooting (see
A/C CONDENSER FAN HIGH SPEED CIRCUIT TROUBLESHOOTING
). |
Check the connectors are properly connected and the terminals are making good contact |