DESCRIPTION The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the navigation receiver assembly via this circuit. The sound signal that has been sent is amplified by the navigation receiver assembly, and then is sent to the speakers. If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the navigation receiver assembly or speakers. WIRING DIAGRAM  PROCEDURE
(a) Disconnect the J135 navigation receiver assembly connector. (b) Disconnect the J100 No. 1 stereo jack adapter assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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Toyota Tundra Service Manual > Rear View Monitor System(for Navigation Receiver Type): Open or Short Circuit in Back Camera Signal (C1622)
DESCRIPTION This DTC is stored if the navigation receiver assembly judges as a result of its self check that the signals or signal lines between the navigation receiver assembly and the television camera assembly are not normal. DTC Code DTC Detection Condition Trouble Area C1622 Open or Short Circu ...
