Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: Exhaust Gas Recirculation "A" Low / Insufficient Flow (P04019C)
DESCRIPTION Based on the driving conditions, the ECM regulates the volume of exhaust gas that is recirculated to each engine cylinder in order to lower the combustion temperature and reduce NOx emissions. The ECM monitors signals such as engine speed, engine coolant temperature, electric load, and v ...
