Air Intake Mode Does Not Change [Manual Air Conditioner]: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

AIR INTAKE MODE DOES NOT CHANGE (MANUAL AIR CONDITIONER) DESCRIPTION AND POSSIBLE CAUSE

DESCRIPTION	Air intake mode does not change when switching REC/FRESH mode
POSSIBLE CAUSE	Air intake actuator malfunction Open or short circuit in wiring harness between climate control unit and air intake actuator Climate control unit connector malfunction or poor connection Air intake actuator connector malfunction or poor connection Climate control unit malfunction Air intake link malfunction Air intake door malfunction Restriction in blower unit

When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.
NOTE:
- The climate control unit controls the air intake mode when the airflow mode is in DEFROSTER so that it is fixed at FRESH mode. At this time, the airflow mode cannot be changed from FRESH to RECIRCULATE even if the REC switch is pressed, but this does not indicate a malfunction.