Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Front Power Seat Control System (w/ Memory)

Symptom	Suspected Area	Link
Front power seat does not operate with front power seat switch	Refer to the "Front Power Seat does not Operate with Front Power Seat Switch".
One or more power seat motors do not operate	Refer to the "One or more Power Seat Motors do not Operate".
Power seat position is not memorized	Refer to the "Power Seat Position is not Memorized".
Power seat does not return to memorized position	Refer to the "Power Seat does not Return to Memorized Position".
Wireless transmitter memory function does not operate	Refer to the "Wireless Transmitter Memory Function does not Operate".
Wireless-linked return function does not operate	Refer to the "Wireless-linked Return Function does not Operate".
Power seat power easy access system function does not operate	Refer to the "Power Seat Power Easy Access System Function does not Operate".

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Seat Belt Warning System(for Gasoline Model): Rear Seat Belt Warning Light Malfunction
DESCRIPTION The main body ECU (multiplex network body ECU) detects whether either the rear doors are open or closed based on the courtesy light switch condition and then sends the rear door status signal to the combination meter assembly. The combination meter assembly detects rear seat belt state. ...

Toyota Avalon (XX50) 2019-2022 Owners Manual