DESCRIPTION
Each radiator fan is made of plastic. It is driven by an electric motor which is retained on a shroud.
Scheme 181
To reduce fan noise, the electric radiator fan control switches the fan speed to Low or High in accordance with the ECM's decision based on conditions such as engine coolant temperature, vehicle speed, and A/C load signals.
To switch the fan speed to Low or High, the circuit connects two motors in series (Low speed) or parallel (High speed).
| Vehicle speed | A/C compressor load | Engine coolant temperature | ||
|---|---|---|---|---|
| Below 95°C (203°F) | Between 96 and 99°C (203 and 210°F) | Over 100°C (212°F) | ||
| Operation of radiator fans | Operation of radiator fans | Operation of radiator fans | ||
| Below 19 km/h (12 MPH) | OFF | OFF | Low-speed | High-speed |
| Low | Low-speed | Low-speed | High-speed | |
| High | High-speed | High-speed | High-speed | |
| Between 20 and 69 km/h (12 and 43 MPH) | OFF | OFF | Low-speed | High-speed |
| Low | High-speed | High-speed | High-speed | |
| High | High-speed | High-speed | High-speed | |
| Between 70 and 105 km/h (43 and 65 MPH) | OFF | OFF | Low-speed | High-speed |
| Low | OFF | Low-speed | High-speed | |
| High | Low-speed | High-speed | High-speed | |
| Over 106 km/h (66 MPH) | OFF | OFF | OFF | High-speed |
| Low | OFF | Low-speed | High-speed | |
| High | OFF | Low-speed | High-speed | |
VEHICLE SPEED SPECIFICATION