Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Automatic Transaxle System: System Voltage Circuit Short to Ground or Open (P056014)
DESCRIPTION The battery supplies electricity to the ECM even when the engine switch is off. This power allows the ECM to store data such as DTC history and freeze frame data. If the battery voltage falls below a minimum level, the stored ECM data will be cleared and the ECM will determine that there ...
