DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 86 (Engine Control System (A25A-FXS) - Diagnostic Codes (P05B1-06DA)) >> SFI System >> DTC P05B1-12: Active Grille Air Shutter "B" Circuit Short to Battery; DTC P05B1-14: Active Grille Air Shutter "B" Circuit Short to Ground or Open; DTC P05B1-31: Active Grille Air Shutter "B" No Signal [12/2019 - 10/2021] >> Monitor Description

Monitor Description

WARNING: This page is about a different variant/trim than selected.
  1. Hall IC Signal Malfunction

    If the grille shutter ECU (swing grille actuator assembly) detects a stuck high or stuck low signal from either hall IC1 or hall IC2, it will output a malfunction signal to the ECM and the ECM will store a DTC.

    GTY549649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Detection Condition DTC No.
    Short to +B (Stuck High) P05B1-12 (Active Grille Air Shutter "B" Circuit Short to Battery)
    Open or Short to Ground (Stuck Low) P05B1-14 (Active Grille Air Shutter "B" Circuit Short to Ground or Open)
  2. Hall IC Signal Reception Malfunction

    If the grille shutter ECU (swing grille actuator assembly) detects a stuck high or stuck low signal from both hall IC1 and hall IC2, it will output a malfunction signal to the ECM and the ECM will store a DTC.

    GTY564841Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Detection Condition DTC No.
    Abnormal Signal (Hall IC1 and Hall IC2) P05B1-31 (Active Grille Air Shutter "B" No Signal)