CAUTION / NOTICE / HINT HINT: Even if the portable player can play audio content, it may not be able to play via the in-vehicle device. This does not necessarily indicate a malfunction of the in-vehicle device. PROCEDURE
(a) Check if the portable player operates normally. OK: The portable player operates normally.
(a) Set volume, fader and balance to the initial values and check that the sound is normal. OK: Audio system returns to normal. HINT: Sound quality adjustment measures vary according to the type of amplifier. Result
(a) Check if the "Bluetooth" audio player plays normally on another "Bluetooth" audio compatible vehicle of the same model. OK: "Bluetooth" audio player plays normally.
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Toyota Tundra Service Manual > Rear View Monitor System(for Radio And Display Type): Open or Short Circuit in Back Camera Signal (C1622)
DESCRIPTION This DTC is stored if the radio and display receiver assembly judges as a result of its self check that the signals or signal lines between the radio and display receiver assembly and the television camera assembly are not normal. DTC Code DTC Detection Condition Trouble Area C1622 Open ...