DTC B2277: Detecting Vehicle Submersion [08/2019 - ]: Procedure
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.
- CHECK WATER INTRUSION
- Check that the certification ECU (smart key ECU assembly), its ground area and wire harnesses have no signs of water intrusion.
Result
Result Proceed to No sign of water intrusion found A Signs of water intrusion found B
Result:
A
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [08/2019 - ]
Result:
B
TAKE MEASURES FOR WATER INTRUSION AND REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [08/2019 - ]
- Check that the certification ECU (smart key ECU assembly), its ground area and wire harnesses have no signs of water intrusion.