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.
The skid control ECU (brake booster with master cylinder assembly) monitors the drive voltage and current of the ABS holding solenoid and ABS reduction solenoid. Based on the monitored information, if any of the following abnormal conditions are detected, the MIL is illuminated and a DTC is stored.
- A flyback circuit malfunction is detected.
- A malfunction of the current monitor is detected.
- An open circuit in the holding valve is detected.
- When the monitored current value increases to a value that is not possible when normal.
- A current leakage is detected.
- Output malfunction is detected when there is a solenoid off command.
- An open circuit in the decrease pressure valve is detected.