Airflow Mode Actuator Inspection

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the following parts:
1. Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .)
2. Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION .)
3. Passenger-side front heat duct (See FRONT HEAT DUCT REMOVAL/INSTALLATION .)
Remove the airflow mode actuator. (See AIRFLOW MODE ACTUATOR REMOVAL .) (See AIRFLOW MODE ACTUATOR INSTALLATION .)

Apply battery positive voltage and connect the ground to the airflow mode actuator terminals as indicated in the table below and verify the operation condition.

Terminal		Airflow Mode Actuator Operation
D	F	Airflow Mode Actuator Operation
B+	Ground	DEFROSTER → VENT
Ground	B+	VENT → DEFROSTER

Fig 1: Connecting Ground To Airflow Mode Actuator Terminals

Courtesy of MAZDA MOTORS CORP.

Verify that the resistance between terminals B and C, C and A matches the airflow mode actuator operation as shown in the graph.

Fig 2: Airflow Mode Actuator Position Graph
Courtesy of MAZDA MOTORS CORP.
- If the operation condition and resistance are not normal, replace the airflow mode actuator. (See AIRFLOW MODE ACTUATOR REMOVAL .) (See AIRFLOW MODE ACTUATOR INSTALLATION .)