Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: Lost Communication with Brake System Control Module Missing Message (U012987). Lost Communication with Active Grille Air Shutter Module "A" Missing Message (U028487). Lost Communication With Hybrid Po
Lost Communication with Brake System Control Module Missing Message (U012987) MONITOR DESCRIPTION The ECM and skid control ECU (brake booster with master cylinder assembly) send and receive signals via CAN communication. If a communication error occurs between the ECM and skid control ECU (brake boo ...
