DESCRIPTION The main body ECU (multiplex network body ECU) detects a high beam headlight illumination request signal of the automatic high beam system from the forward recognition camera.
WIRING DIAGRAM  PROCEDURE
(a) Check front camera system. Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Smart Key System(for Start Function, Hv Model): Open in Rear Floor Electrical Key Oscillator Circuit (B27A6)
DESCRIPTION The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the No. 1 indoor electrical key antenna assembly (rear floor). For the No. 1 indoor electrical key antenna assembly (rear floor) to detect when the electrical key transmitter sub-assembl ...
