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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Body & Frame >> Exterior/Interior Trim >> Grille Shutter System - Diagnostic Codes & Symptom Tests >> Grille Shutter System >> Grille Shutter is Half Opened/Closed [10/2021 - ] >> Procedure

Grille Shutter is Half Opened/Closed [10/2021 - ]: Procedure

  1. PERFORM UTILITY USING GTS (SWITCH GRILLE SHUTTER CONTROL MODE) 
    1. According to the display on the GTS, change the grille shutter control mode from normal mode to maintenance mode.

      Powertrain > Engine > Utility 

      Tester Display
      Switch Grille Shutter Control Mode

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK FOR GRILLE SHUTTER (FOREIGN MATTER AND ICE) 
    1. Check the area around the shutters and the links of the grille shutter for foreign matter and ice.

      OK

      The radiator shutter sub-assembly is free of foreign matter and ice.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  3

  3. INITIALIZE GRILLE SHUTTER SYSTEM 
    1. According to the display on the GTS, perform initialization (nominal torque).

      Powertrain > Engine > Utility 

      Tester Display
      Grille Shutter Initialization

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. PERFORM ACTIVE TEST USING GTS 
    1. Using the GTS, operate the grille shutter by performing an Active Test and remove any foreign matter.

      HINT: 

      When foreign matter is jammed with the grille shutter open, perform a close operation. When foreign matter is jammed with the grille shutter closed, perform an open operation.

      Powertrain > Engine > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Control the Grille Shutter Control the swing grille actuator assembly 0% (open) to 100% (close) Perform this test when the following conditions are met:
      • Ignition switch ON.
      • Auxiliary battery voltage is 10.5 to 16 V.

      Powertrain > Engine > Active Test 

      Tester Display
      Control the Grille Shutter

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. READ VALUE USING GTS (GRILLE SHUTTER CONTROL MODE) 
    1. According to the display on the GTS, change the grille shutter control mode from maintenance mode to normal mode.

      Powertrain > Engine > Utility 

      Tester Display
      Switch Grille Shutter Control Mode
    2. Read the value displayed on the GTS.

      Powertrain > Engine > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Grille Shutter Control Mode Grille shutter control mode status Normal or Maintenance Normal: Normal mode
      Maintenance: Maintenance mode      		 -

      Powertrain > Engine > Data List 

      Tester Display
      Grille Shutter Control Mode

      OK

      Normal is displayed.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

  6. REMOVE FOREIGN MATTER OR ICE (CLEAN GRILLE SHUTTER) 
    1. Remove any foreign matter and/or ice from the area around the shutters and the links of the grille shutter.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

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