A/C OFF or Non-A/C Model
- The cooling fans are actuated by the engine control module (ECM) using a low-speed cooling fan relay and a high-speed cooling fan relay. On A/C-equipped vehicles, a series/parallel cooling fan relay is also used.
- The ECM will turn the cooling fans on at low speed when the coolant temperature reaches 93 °C (199 °F) and at high speed when the coolant temperature reaches 97 °C (207 °F).
- The ECM will change the cooling fans from high speed to low speed at 94 °C (201 °F) and will turn the cooling fans off at 90 °C (194 °F).