GRILLE SHUTTER SYSTEM, Diagnostic DTC:B1332

DTC Code DTC Name
B1332 ECU Malfunction

DESCRIPTION

The swing grille actuator assembly has a built-in ECU and stores a DTC when there is an internal ECU malfunction.

DTC Code DTC Detection Condition Trouble Area Relevant ECU
B1332

When either of the following internal ECU malfunctions is detected (microcomputer malfunction):


  • Data flash malfunction

  • A/D conversion malfunction

  • Swing grille actuator assembly

  • Radiator shutter sub-assembly

 Swing grille actuator assembly

INSPECTION PROCEDURE

Note

If the swing grille actuator assembly is replaced with a new one, it is necessary to perform "Change Radiator Shutter Control State" Click here.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (SHUTTER OPERATION)


    1. Using the GTS, perform the Active Test Click here.

      Grille Shutter
      Tester Display Test Part Control Range Diagnostic Note
      Shutter Closing Operation Lock Detection Grille shutter Close or OFF Closing operation performed until motor stops due to lock detection.
      Shutter Opening Operation Lock Detection Grille shutter Close or OFF Opening operation performed until motor stops due to lock detection.

    NEXT

  2. READ VALUE USING GTS (RESULT FOR ACTIVE TEST)


    1. Using the GTS, read the Data List Click here.

      Grille Shutter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Shutter Operation Lock Detection Result Operation result of Active Test / Normal, Open Error or Close Error Normal -
      OK
      The display is as specified in the normal condition column.

    NG

    REPLACE SWING GRILLE ACTUATOR ASSEMBLY Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  3. REPLACE SWING GRILLE ACTUATOR ASSEMBLY


    1. Replace the swing grille actuator assembly with a new or normally functioning one Click here.


    NEXT

  4. PERFORM ACTIVE TEST USING GTS (SHUTTER OPERATION)


    1. Using the GTS, perform the Active Test Click here.

      Grille Shutter
      Tester Display Test Part Control Range Diagnostic Note
      Shutter Closing Operation Lock Detection Grille shutter Close or OFF Closing operation performed until motor stops due to lock detection.
      Shutter Opening Operation Lock Detection Grille shutter Close or OFF Opening operation performed until motor stops due to lock detection.

    NEXT

  5. READ VALUE USING GTS (RESULT FOR ACTIVE TEST)


    1. Using the GTS, read the Data List Click here.

      Grille Shutter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Shutter Operation Lock Detection Result Operation result of Active Test / Normal, Open Error or Close Error Normal -
      OK
      The display is as specified in the normal condition column.

    NG

    REPLACE RADIATOR SHUTTER SUB-ASSEMBLY Click here

    OK

    END (SWING GRILLE ACTUATOR ASSEMBLY WAS DEFECTIVE)