Cooling Fan Controls Symptom Troubleshooting Index
NOTE: Do an all DTC check with the HDS, and troubleshoot any DTCs first before following the repair procedures listed in the index.

Symptom
Diagnostic Procedure
Also check for
Engine overheats
1.
Check the coolant level.
2.
Check for any engine coolant leakage (from gaskets, hoses, O-rings, etc.).
3.
Check for dirt, leaves, or insects on the radiator and the A/C condenser.
4.
Check for deteriorated coolant.
5.
Check for a damaged or deformed fan shrouds.
6.
Check the RFC unit is operating properly (air should be blowing toward the engine).
7.
Check the expansion tank cap.
8.
Check the thermostat.
9.
Check for plugged or deteriorated radiator hoses.
10.
Check for a plugged heater core or hoses.
11.
Check for a damaged cylinder head gasket.
Check the RFC unit is operating properly.