Four Seasons 73670 HVAC Mode Door Actuator

Reliable HVAC Mode Door Actuator for Nissan and INFINITI Vehicles

The Four Seasons 73670 HVAC Mode Door Actuator is designed to restore proper airflow control in your vehicle's heating and cooling system. Compatible with select Nissan and INFINITI models, this actuator ensures precise operation of the HVAC air doors for consistent cabin comfort.

• Door linkage type: Arm for accurate movement
• Mounting ear quantity: 4 for secure installation
• Style: HVAC air door actuator tailored for mode control
• Terminal pin quantity: 3 for reliable electrical connection

Product Details and Specifications

This HVAC mode door actuator from Four Seasons features an arm-style door linkage that provides dependable control over the air distribution doors within the HVAC system. The actuator includes four mounting ears, allowing for a stable and secure fit in the HVAC assembly. With three terminal pins, it ensures a consistent electrical connection to the vehicle’s control system. The actuator is engineered to meet the specific requirements of Nissan Altima, Sentra, and INFINITI QX50 and QX55 models, making it a precise replacement part for these vehicles.

Compatible Vehicles and Applications

The Four Seasons 73670 HVAC Mode Door Actuator is compatible with the following vehicles:

• Nissan Altima
• Nissan Sentra
• INFINITI QX50
• INFINITI QX55

This actuator is used to control the mode doors that direct airflow to different vents inside the vehicle, such as floor, dash, or defrost vents.

Common HVAC Issues Addressed

• Inconsistent or incorrect airflow direction inside the cabin
• Failure of HVAC mode doors to respond to control inputs
• Unusual noises from the HVAC system due to faulty actuator movement
• Reduced heating or cooling efficiency caused by stuck air doors
• Intermittent or no airflow from specific vents

Installation Notes and Tips

When replacing the HVAC mode door actuator, ensure the vehicle’s battery is disconnected to prevent electrical shorts. Carefully remove the old actuator and note the position of the door linkage arm. Align the new actuator’s arm linkage and secure it using the four mounting ears. Verify the three terminal pins are properly connected to the vehicle’s wiring harness. After installation, test the HVAC system to confirm proper operation of all airflow modes.

Quality Assurance and Warranty

Four Seasons manufactures this HVAC mode door actuator to meet or exceed OEM specifications for fit, form, and function. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty against defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.