Fan Controls Symptom Troubleshooting

Before performing any troubleshooting procedures check:
  • Fuses
  • Grounds
  • Cleanliness and tightness of all connectors

Radiator fan does not run at all Radiator Fan Circuit Troubleshooting. 
Radiator fan does not run for engine cooling, but it run 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).