Monitor Description
WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
When the hybrid vehicle control ECU assembly detects a low power supply voltage for the battery voltage sensor while pre-charge is occurring, it determines that there is a malfunction in the battery voltage sensor circuit. If the hybrid vehicle control ECU assembly detects a malfunction, it will illuminate the MIL and store a DTC.