Full-auto Air Conditioner: Inspection

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.

Switch the ignition ON.
Verify that the rear window defogger switch LED illuminates using the rear window defogger switch.
Verify that the heated outer mirrors and rear window defogger warm up.
- If the heated outer mirrors and the rear window defogger do not warm up, perform diagnosis for a possible CAN malfunction according to the CAN malfunction diagnosis flow. (See FOREWORD [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
  - If a CAN malfunction has occurred, repair the malfunctioning location according to the diagnostic procedure of the CAN malfunction diagnosis flow. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW .)
  - If a CAN malfunction has not occurred, perform inspection of the each related part.
    Rear window defogger switch inspection
    - Use the heater, ventilation and air conditioning PID/data monitor inspection R/DEF_SW to inspect the rear window defogger switch. (See PID/DATA MONITOR DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)] .) (See PID/DATA MONITOR TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)] .)
    Inspection of rear window defogger control signal transmission condition for climate control unit
    - Use the heater, ventilation and air conditioning PID/data monitor inspection R/DEF_CS to inspect the rear window defogger control signal transmission condition. (See PID/DATA MONITOR DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)] .) (See PID/DATA MONITOR TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)] .)
    Inspection of rear window defogger control signal reception condition for front body control module (FBCM)
    - Use the front body control module (FBCM) PID/data monitor inspection DEFOG_R_CS to inspect the rear window defogger control signal reception condition. (See PID/DATA MONITOR INSPECTION [FRONT BODY CONTROL MODULE (FBCM)] .) (See PID/DATA MONITOR TABLE [FRONT BODY CONTROL MODULE (FBCM)] .)
    Rear window defogger relay ON/OFF control inspection
    - Measure the terminal voltage at the front body control module (FBCM) terminal 1P. (See FRONT BODY CONTROL MODULE (FBCM) INSPECTION .)
    Rear window defogger relay inspection
    - Inspect the rear window defogger relay. (See RELAY INSPECTION .)
    Rear window defogger inspection
    - Inspect the rear window defogger. (See REAR WINDOW DEFOGGER INSPECTION .)
    Heated outer mirror inspection
    - Inspect the heated outer mirrors. (See OUTER MIRROR GLASS INSPECTION .)