Air Mix Actuator Inspection (Manual A/C)

CAUTION:

If the lever position exceeds the operation range shown in the figure, the circuit in the actuator could be damaged. Always perform an actuator operation inspection with the lever movement within the range shown in the figure.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the following parts:
1. Passenger-side front scuff plate (See FRONT SCUFF PLATE REMOVAL/INSTALLATION .)
2. Passenger-side front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
3. Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .)
4. Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION .)
5. Lower decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION .)
6. Passenger-side lower panel (See LOWER PANEL REMOVAL/INSTALLATION .)
7. Passenger-side front heat duct (See FRONT HEAT DUCT REMOVAL/INSTALLATION .)
Remove the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION (MANUAL A/C) .)

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

Terminal		Air mix actuator operation
B	C	Air mix actuator operation
B+	Ground	HOT → COLD
Ground	B+	COLD → HOT

Fig 1: Air Mix Actuator Connector Terminals

Courtesy of MAZDA MOTORS CORP.

Verify that the resistance between terminals F and G, E and F matches the air mix actuator operation as shown in the graph.

Fig 2: Air Mix Actuator Position Graph
Courtesy of MAZDA MOTORS CORP.
- If the operation condition and resistance are not normal, replace the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION (MANUAL A/C) .)