DESCRIPTION When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the horns to sound at intervals of 0.4 seconds. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Press the horn switch and check if the horns sound.
(a) Remove the main body ECU (multiplex network body ECU). Click here
(b) Disconnect the 4F instrument panel junction block assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Theft Deterrent System(for Gasoline Model): Power Source Circuit
DESCRIPTION Based on changes in the power source voltage, the main body ECU (multiplex network body ECU) can detect if the battery has been disconnected and reconnected. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Before replacing the main body ECU (multiplex network body ECU), refer to Registrat ...