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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System (Diagnostics) >> Diagnostics with Phenomenon >> Inspection >> Unable To Switch Suction Vents

Unable To Switch Suction Vents

Trouble symptom: 

Even when the FRESH/RECIRC switch is pressed, the inlet opening does not switch to RECIRC → FRESH or FRESH → RECIRC.

Trouble causes: 

Intake door actuator failure

  1. VISUALLY CHECK FRESH/RECIRC DOOR OPERATION. 
    1. Remove the glove box. Ref. to EXTERIOR/INTERIOR TRIM>Glove Box>REMOVAL .
    2. Operate the FRESH/RECIRC switch, and visually check the intake door operation.

    Does the intake door operate normally? Is the position between the intake door and intake door case sealed completely?

    • Yes  : The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis.
      NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
    • No  : Go to 2. 
  2. CHECK A/C CONTROL PANEL. 
    1. Turn the ignition switch to ON.
    2. Using Subaru Select Monitor, check Fresh/Recircle Air Door Actuator Position Target of the data monitor.
    3. Operate the FRESH/RECIRC switch. Ref. to AIR CONDITIONER(DIAGNOSTICS)>Data Monitor .

    Does [Fresh/Recircle Air Door Actuator Position Target] indicate 0 ←→ 100?

  3. CHECK DTC. 
    1. Turn the FRESH/RECIRC switch to RECIRC, and leave for 16 seconds or more.
    2. Read the DTC using Subaru Select Monitor. Ref. to AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC) .

    Is DTC B14E9, B14EA or B14EB displayed?

  4. CHECK DTC. 
    1. Turn the FRESH/RECIRC switch to FRESH, and leave for 16 seconds or more.
    2. Read the DTC using Subaru Select Monitor. Ref. to AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC) .

    Is DTC B14E9, B14EA or B14EB displayed?

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