Where can I find the blend door actuator in a 2003 Honda Civic?

The blend door actuator is situated closer to the heater core and evaporator compared to the mode door. Its main function is to regulate the temperature and airflow intensity of the climate control system. If it malfunctions, the climate control will operate erratically. A common cause of its failure is a blown fuse. To access the fuse box located under the car hood, you need to raise and latch the hood first. On the right side of the engine compartment, there will be a black box with a visible seam. Opening this box will reveal the fuse inside. The lid of the box should have a diagram indicating the fuse's function. If the diagram is not on the lid, you can refer to the owner's manual. Once you identify the fuse needed, remove it. A good fuse will have a continuous thin metal strip connecting the two raised sections. If this strip is broken, the fuse needs replacement. Otherwise, the fuse can be reinserted. Replacement fuses are relatively inexpensive, typically costing around $10.