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Radiator Fan: Function

WARNING: This page is about a different variant/trim than selected.

On models equipped with an air conditioning system, the ECM receives signals from the engine coolant temperature sensor, vehicle speed sensor and A/C switch, and based on these signals, the ECU controls the fan speed to Hi or Low.

Operation examples: 

VEHICLE SPEED SPECIFICATION

Vehicle speed A/C compressor load Engine coolant temperature
Rising: below 95°C (203°F) Lowering: below 92°C (198°F) Rising: between 96 and 99°C (205 and 210°F) Lowering: between 93 and 94°C (199 and 201°F) Rising: over 100°C (212°F) Lowering: over 95°C (203°F)
Operation of radiator fans Operation of radiator fans Operation of radiator fans
When accelerating: below 19 km/h (12 MPH) When decelerating: below 10 km/h (6 MPH) OFF OFF Low-Speed High-Speed
Low Low-Speed Low-Speed High-Speed
High High-Speed High-Speed High-Speed
When accelerating: between 20 and 69 km/h (12 and 43 MPH) When decelerating: between 11 and 64 km/h (7 and 40 MPH) OFF OFF Low-Speed High-Speed
Low High-Speed High-Speed High-Speed
High High-Speed High-Speed High-Speed
When accelerating: between 70 and 105 km/h (43 and 65 MPH) When decelerating: between 65 and 103 km/h (40 and 64 MPH) OFF OFF Low-Speed High-Speed
Low OFF Low-Speed High-Speed
High Low-Speed High-Speed High-Speed
When accelerating: over 106 km/h (66 MPH) When decelerating: over 104 km/h (64.6 MPH) OFF OFF OFF High-Speed
Low OFF Low-Speed High-Speed
High OFF Low-Speed High-Speed