During the daily inspection of the auxiliary cooling system, what is the first action required?

Bringing the engine to normal operating temperature is crucial because it ensures that the auxiliary cooling system can be properly evaluated under normal operating conditions. When the engine reaches its optimal temperature, any potential issues with the cooling system, such as blockages or leaks, can be more easily identified. This allows for a thorough inspection of the system’s performance, ensuring that it operates efficiently when needed.

Inspecting fluid levels is important for system functionality, but it is often more meaningful when the engine is at operating temperature, as the fluid levels can vary when the engine is cold. Testing the water pump and activating the cooling system valve are also critical steps in assessing the system, but they are more effective after confirming that the engine is at the correct temperature, allowing for a comprehensive evaluation of the system’s operation and efficiency.