Radiator Fan Runs at Low Speed, But It Does Not Run at High Speed When the Engine Coolant Temperature Is Above 206 F (97 C)

The radiator fan runs at low speed, but it does not run at high speed when the engine coolant temperature is above 206 �F (97 �C)

Diagnostic Procedure:

Radiator fan high speed circuit troubleshooting. Radiator Fan High Speed Circuit Troubleshooting

Also check for:

- Cleanliness and tightness of all connectors