Engine Cooling Fan: Testing: Notes

NOTE: Use the following procedures to diagnose electric cooling fan systems only when a Diagnostic Trouble Code (DTC) is set, or when sent here by another test. Perform QUICK TEST before performing the following diagnostic procedures. See QUICK TEST in TESTS W/CODES article in ENGINE PERFORMANCE section. See TROUBLE SHOOTING when diagnosing by symptom. See the following illustrations for fan control relay connector terminal identification. See Figure .