Monitor Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- Hall IC Signal Malfunction
If the grille shutter ECU 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.
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) - Hall IC Signal Reception Malfunction
If the grille shutter ECU 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.
Detection Condition DTC No. Abnormal Signal (Hall IC1 and Hall IC2) P05B1-31 (Active Grille Air Shutter "B" No Signal)