Mazda RX-8 Workshop Manual page 2446

18 Air mix actuator [potentiometer] (present malfunction)
19 Air mix actuator [potentiometer] (past malfunction)
21 Airflow mode actuator [potentiometer] (present malfunction)
22 Airflow mode actuator [potentiometer] (past malfunction)
58 Air mix actuator [motor lock] (past malfunction)
59 Airflow mode actuator [motor lock] (past malfunction)
A/C Operation Check Mode
Inspection procedure
1. Warm up the engine and turn the ignition switch to the LOCK position.
2. Start the present malfunction indication mode referring to the DTC inspection.
3. Turn the ignition switch to the ON position and press the AUTO switch.
4. Verify that all the indicator lights of the climate control unit and the information display illuminate for 4 s.
5. Verify the operation of each output device when changing steps by pressing the REC/FRESH switch, and
referring to the output device operation check table.
If any abnormality is found, inspect the malfunctioning system.