Dorman 604-340 HVAC Blend Door Actuator - Main

Overview of the Dorman HVAC Blend Door Actuator 604-340

The Dorman HVAC Blend Door Actuator 604-340 is designed to restore proper airflow control in your vehicle's heating and cooling system. This actuator is compatible with select Acura and Honda models, including the Civic, CR-V, and CSX, ensuring precise climate control performance.

• Rotary switch activation type for reliable operation
• Seven-pin male terminal configuration for secure electrical connection
• Durable plastic construction for long-lasting use
• Includes one air door actuator per package

Technical Details and Features

This HVAC blend door actuator features a rotary switch activation type, which allows for smooth and accurate adjustment of the blend door position. The actuator connects via a seven-pin male terminal, providing a stable and consistent electrical interface. Constructed from durable plastic materials, this part is engineered to withstand the demands of daily vehicle operation. The Dorman 604-340 actuator is specifically designed to fit Acura and Honda vehicles such as the Civic, CR-V, and CSX, ensuring compatibility and proper fitment.

Applications and Common Issues Addressed

This blend door actuator is used to control the position of the air door within the HVAC system, regulating the mix of hot and cold air to maintain the desired cabin temperature. It is commonly replaced to resolve issues such as:

• Inconsistent or incorrect cabin temperature control
• Unusual noises coming from the HVAC system
• Failure of the blend door to move or respond to controls
• Airflow stuck in one position (hot or cold)
• Intermittent HVAC system operation

Installation Notes and Tips

When installing the Dorman HVAC Blend Door Actuator 604-340, ensure the vehicle is powered off and the HVAC system is set to a neutral position. Carefully disconnect the existing actuator by releasing the seven-pin male terminal connector. Align the new actuator properly with the blend door shaft and secure it in place. Verify the actuator’s operation by cycling through temperature settings before reassembling any removed panels.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The 604-340 HVAC blend door actuator undergoes quality control testing to ensure proper function. Please refer to Dorman’s warranty policy for specific coverage details.