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Home >> Subaru >> 2019 >> Forester Touring >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Thermo Control Valve Assembly >> Inspection >> Check THERMO Control Valve Assembly >> Check THERMO Control Valve Assembly

Check THERMO Control Valve Assembly

  1. Using the Subaru Select Monitor, select [Coolant Circulation Valve Control] of [Active Test].
    NOTE: For details operation procedures, refer to the "Active Test". Refer to the appropriate Service Information
  2. Adjust the target value of [Coolant Circulation Valve Control] to set the value of [Coolant Circulation Valve Target Angle] to 79 deg.
  3. Read the value of [Coolant Circulation Valve Actual Angle].

Is the value of [Coolant Circulation Valve Actual Angle] between 73.7 deg - 84.3 deg within seven seconds after setting [Coolant Circulation Valve Target Angle]?

Yes  Go to

No  Replace the thermo-control valve assembly. Refer to Thermo Control Valve Assembly 



  1. Adjust the target value of [Coolant Circulation Valve Control] to set the value of [Coolant Circulation Valve Target Angle] to -83 deg.
  2. Read the value of [Coolant Circulation Valve Actual Angle].

Is the value of [Coolant Circulation Valve Actual Angle] between -77.7 deg - -88.3 deg within seven seconds after setting [Coolant Circulation Valve Target Angle]?

Yes  The thermo control valve assembly is in a normal condition. Perform other inspections.

No  Replace the thermo-control valve assembly. Refer to Thermo Control Valve Assembly