DESCRIPTION The No. 1 stereo jack adapter assembly sends an external device sound signal to the radio and display receiver assembly through this circuit. The sound signal that has been sent is amplified by the radio and display 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 radio and display receiver assembly or speakers. WIRING DIAGRAM  PROCEDURE
(a) Disconnect the J139 radio and display 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 > Navigation System: Illumination for Panel Switch does not Come on with Tail Switch ON
PROCEDURE 1. CHECK VEHICLE SIGNAL (OPERATION CHECK) (a) Enter the "Vehicle Signal Check Mode" screen. [Refer to Check Vehicle Signal in Operation Check (See page )] (b) Check that the display for "TAIL" changes between ON and OFF according to the light control switch operation. OK: Light Control Swi ...
