Fan Controls Symptom Troubleshooting

Before performing any troubleshooting procedures check:

SYMPTOM PROCEDURE 
Radiator fan does not run at all Radiator Fan Circuit Troubleshooting. 
Radiator fan does not run for engine cooling, but it runs with A/C ON Radiator Fan Switch Circuit Troubleshooting (Open). 
Radiator fan runs with ignition switch ON (II), A/C OFF, and engine temperature below 93°C (199°F) Radiator Fan Switch Circuit Troubleshooting (Short). 
Radiator fan does not run with the A/C ON, but it runs for engine cooling Refer to HVAC Symptom Troubleshooting Index