Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: System Voltage Circuit Short to Ground or Open (P056014)
MONITOR DESCRIPTION The auxiliary battery supplies electricity to the ECM even when the power switch is off. This power allows the ECM to store data such as DTC history, Freeze Frame Data and fuel trim values. If the auxiliary battery voltage falls below a minimum level, the memory is cleared and th ...
