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.

Airbag System

Symptom	Suspected Area	Link
The SRS warning light turns off after the primary check, but then comes on	Wire harness CAN communication system Combination meter assembly Airbag ECU assembly
When the engine switch is turned on (IG), the SRS warning light sometimes comes on after approximately 6 seconds	Wire harness CAN communication system Combination meter assembly Airbag ECU assembly
The SRS warning light always comes on even when DTCs are not output	Wire harness Combination meter assembly Airbag ECU assembly
When the engine switch is turned on (IG), the SRS warning light does not come on	Wire harness Combination meter assembly Airbag ECU assembly

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Power Window Control System(for Gasoline Model): System Diagram
SYSTEM DIAGRAM Communication Table Transmitting ECU Receiving ECU Signal Communication Method Multiplex Network Master Switch Assembly Power Window Regulator Motor Assembly (for Driver Door) Power window auto up and down signal LIN Power Window Regulator Motor Assembly (for Front Passenger Door) Pow ...

Toyota Avalon (XX50) 2019-2022 Owners Manual