INSPECTION PROCEDURE 1. INSPECT QUICK HEATER ASSEMBLY 
(a) 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 > Navigation System(for Gasoline Model): AV Signal Stoppage (Low Battery Voltage) (B158F)
DESCRIPTION This DTC is stored when a video or audio signal is interrupted due to battery voltage input to the radio and display receiver assembly dropping temporarily. DTC No. Detection Item DTC Detection Condition Trouble Area B158F AV Signal Stoppage (Low Battery Voltage) A video or audio signal ...
