NAVIGATION SYSTEM (for Navigation Receiver Type) Sound Signal Circuit between Navigation Receiver Assembly 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 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.

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INSPECTION PROCEDURE

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PROCEDURE

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

   
   

   1. Disconnect the H68 No. 1 stereo jack adapter assembly connector.

   2. Disconnect the H56 navigation receiver assembly connector.

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

      Standard Resistance

      Tester Connection Condition Specified Condition H68-8 (VAL+) - H56-28 (VAL+) Always Below 1 Ω H68-7 (VAR+) - H56-26 (VAR+) Always Below 1 Ω H68-9 (VA-) - H56-27 (VA-) Always Below 1 Ω H68-12 (AGND) - H56-11 (AGND) Always Below 1 Ω H68-10 (ADPG) - H56-25 (ADPG) Always Below 1 Ω H56-12 (SG) - Body ground Always 10 kΩ or higher H68-8 (VAL+) - Body ground Always 10 kΩ or higher H68-7 (VAR+) - Body ground Always 10 kΩ or higher H68-9 (VA-) - Body ground Always 10 kΩ or higher H68-12 (AGND) - Body ground Always 10 kΩ or higher H68-12 (AGND) - Body ground Always 10 kΩ or higher H68-12 (AGND) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
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   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

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   REPAIR OR REPLACE HARNESS OR CONNECTOR