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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 P05A2-11: Active Grille Air Shutter "A" Circuit Short to Ground; DTC P05A2-12: Active Grille Air Shutter "A" Circuit Short to Battery; DTC P05A2-13: Active Grille Air Shutter "A" Circuit Open [12/2019 - 10/2021] >> Description

DTC P05A2-11: Active Grille Air Shutter "A" Circuit Short to Ground; DTC P05A2-12: Active Grille Air Shutter "A" Circuit Short to Battery; DTC P05A2-13: Active Grille Air Shutter "A" Circuit Open [12/2019 - 10/2021]: Description

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

Refer to DTC P059F-73.

Refer to DESCRIPTION 

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P05A2-11 Active Grille Air Shutter "A" Circuit Short to Ground Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):
  • Short to ground detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested.
  • Short to ground detected in the motor drive circuit when a grille shutter operation is requested.
 Swing grille actuator assembly Comes on DTC stored SAE Code: P05A5
P05A2-12 Active Grille Air Shutter "A" Circuit Short to Battery Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):
  • Short to +B detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested.
  • Short to +B detected in the motor drive circuit when a grille shutter operation is requested.
 Swing grille actuator assembly Comes on DTC stored SAE Code: P05A4
P05A2-13 Active Grille Air Shutter "A" Circuit Open Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):
  • Open detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested.
  • Open detected in the grille shutter motor circuit when a grille shutter operation is requested.
  • Internal malfunction detected in the grille shutter ECU (swing grille actuator assembly) when a grille shutter operation is requested.
 Swing grille actuator assembly Comes on DTC stored SAE Code: P05A2

HINT: 

*: For every 65 ms that the ECM receives a grille shutter system malfunction signal from the grille shutter ECU (swing grille actuator assembly) the ECM determines it has received the signal 1 time. If the ECM determines the malfunction signal has been received 17 consecutive times (the signal is received for approximately 1 second continuously), it will store a DTC.

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