Air Intake Actuator Inspection (Auto 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.

1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
2. Remove the following parts:
   1. Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .)
   2. Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION .)
3. Remove the air intake actuator. (See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION (AUTO A/C) .)
4. Apply battery positive voltage and connect the ground to the air intake actuator terminals as indicated in the table below and verify the operation condition.

   B+ Terminal	Ground Terminal	Operation
   B	A	FRESH → RECIRCULATE
   A	B	RECIRCULATE → FRESH

   Fig 1: Air Intake Actuator Connector Terminals

   Courtesy of MAZDA MOTORS CORP.
   • If not as indicated in the table, replace the air intake actuator. (See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION (AUTO A/C) .)
5. Verify that the resistance between terminals C and D, D and E matches the air intake actuator operation as shown in the graph.

Fig 2: Air Intake Actuator Position Graph

Courtesy of MAZDA MOTORS CORP.

• If the operation condition and resistance are not normal, replace the air intake actuator. (See AIR INTAKE ACTUATOR REMOVAL/INSTALLATION (AUTO A/C) .)