Power Source Mode does not Change to ON (ACC) [08/2019 - ]: Description
WARNING: This page is about a different car, the 2022 Toyota Sequoia, 2021 Toyota Sequoia, and 2020 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
If the engine switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode.
RELATED DATA LIST AND ACTIVE TEST ITEMS
| Problem Symptom | Data List and Active Test |
|---|---|
| Power source mode does not change to on (ACC) but does change to on (IG) | Power Source Control
|
HINT:
Use this procedure to troubleshoot the malfunction that ACC mode of all the ECUs is not available.
When ACC mode of some ECUs is not available, check the ACC power source circuit related to the malfunctioning ECUs.