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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 87 (Engine Control System (A25A-FXS) - Diagnostic Codes (P0520-P05A2)) >> SFI System >> DTC P059A-71: Active Grille Air Shutter "A" Actuator Stuck; DTC P059A-79: Active Grille Air Shutter "A" Mechanical Linkage Failure [11/2023 - ] >> Procedure

DTC P059A-71: Active Grille Air Shutter "A" Actuator Stuck; DTC P059A-79: Active Grille Air Shutter "A" Mechanical Linkage Failure [11/2023 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  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. INSPECT 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

      No foreign matter or ice.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  3

  3. PERFORM UTILITY USING GTS (GRILLE SHUTTER INITIALIZATION) 
    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. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CHECK DTC OUTPUT (DTC P059A-71 OR P059A-79) 
    1. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P059A-71 and/or P059A-79 is output B

      HINT: 

      Perform "Switch Grille Shutter Control Mode and Grille Shutter Initialization" after replacing the radiator shutter assembly.

      Refer to INITIALIZATION [10/2021 - ]

    Result: 

    A 

    See step  8

    Result: 

    B 

    REPLACE RADIATOR SHUTTER ASSEMBLY 

    Refer to REMOVAL [10/2021 - ]

  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  7

  7. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  8

  8. 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
      Grille Shutter Control Mode

      Standard

      GTS Display Specified Condition
      Grille Shutter Control Mode Normal

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

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