AUDIO AND VISUAL SYSTEM (w/o Navigation System) > Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

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DESCRIPTION

The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio receiver assembly through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assembly or radio 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 stereo component amplifier assembly*1, radio receiver assembly or speakers.
  1. *1: for 10 Speakers

WIRING DIAGRAM


for 10 Speakers

E222758E01


for 6 Speakers

E222759E01


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

  1. Disconnect the No. 1 stereo jack adapter assembly and radio receiver assembly connectors.



    E222764E01

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    for 10 Speakers 
    Tester Connection
    		Condition
    		Specified Condition
    H120-9 (AUXO) - H52-19 (AUXI)
    		Always
    		Below 1 Ω
    H120-6 (ARO) - H52-15 (ARI)
    		Always
    		Below 1 Ω
    H120-7 (ALO) - H52-17 (ALI)
    		Always
    		Below 1 Ω
    H120-8 (ASGN) - H52-16 (ASGN)
    		Always
    		Below 1 Ω
    H120-10 (AGND) - H52-18 (AGND)
    		Always
    		Below 1 Ω
    H120-9 (AUXO) - Body ground
    		Always
    		10 kΩ or higher
    H120-6 (ARO) - Body ground
    		Always
    		10 kΩ or higher
    H120-7 (ALO) - Body ground
    		Always
    		10 kΩ or higher
    H120-8 (ASGN) - Body ground
    		Always
    		10 kΩ or higher
    H120-10 (AGND) - Body ground
    		Always
    		10 kΩ or higher
    for 6 Speakers 
    Tester Connection
    		Condition
    		Specified Condition
    H120-9 (AUXO) - H47-25 (AUXI)
    		Always
    		Below 1 Ω
    H120-6 (ARO) - H47-26 (ARI)
    		Always
    		Below 1 Ω
    H120-7 (ALO) - H47-28 (ALI)
    		Always
    		Below 1 Ω
    H120-8 (ASGN) - H47-27 (ASGN)
    		Always
    		Below 1 Ω
    H120-10 (AGND) - H47-11 (AGND)
    		Always
    		Below 1 Ω
    H120-2 (UDO-) - H122-2 (US1-)
    		Always
    		Below 1 Ω
    H120-3 (UDO+) - H122-3 (US1+)
    		Always
    		Below 1 Ω
    H120-5 (UJSS) - H122-5 (USG1)
    		Always
    		Below 1 Ω
    H120-9 (AUXO) - Body ground
    		Always
    		10 kΩ or higher
    H120-6 (ARO) - Body ground
    		Always
    		10 kΩ or higher
    H120-7 (ALO) - Body ground
    		Always
    		10 kΩ or higher
    H120-8 (ASGN) - Body ground
    		Always
    		10 kΩ or higher
    H120-10 (AGND) - Body ground
    		Always
    		10 kΩ or higher
    H120-2 (UDO-) - Body ground
    		Always
    		10 kΩ or higher
    H120-3 (UDO+) - Body ground
    		Always
    		10 kΩ or higher
    H120-5 (UJSS) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *A
    		for 10 Speakers
    *B
    		for 6 Speakers
    *a
    		Front view of wire harness connector
    (to Radio Receiver Assembly)
    *b
    		Front view of wire harness connector
    (to No. 1 Stereo Jack Adapter Assembly)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)