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 > Can Communication System: Check Bus 5 Line for Short to GND
DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 15 (CA5H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 16 (CA5L) of the central gateway ECU (network gateway ECU) and termin ...
