AUDIO AND VISUAL SYSTEM (w/o Multi-display) Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

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 radio receiver assembly, and then is sent to the speakers.

If there is an open or short in this circuit, sound cannot be heard from the speakers even if there is no malfunction in the radio receiver assembly or speakers.

WIRING DIAGRAM

A01G98TE06

INSPECTION PROCEDURE

PROCEDURE


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


    1. Disconnect the H154 No. 1 stereo jack adapter assembly connector.

    2. Disconnect the H83 and H155 radio receiver assembly connectors.

    3. A01G5NIE80
      A01G6HTE89
      A01G5DPE04

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H154-9 (AUXO) - H83-19 (ADPG) Always Below 1 Ω
      H154-6 (ARO) - H83-15 (VAR+) Always Below 1 Ω
      H154-7 (ALO) - H83-17 (VAL+) Always Below 1 Ω
      H154-8 (ASGN) - H83-16 (VA-) Always Below 1 Ω
      H154-10 (AGND) - H83-18 (AGND) Always Below 1 Ω
      H154-2 (UDO-) - H155-2 (US1-) Always Below 1 Ω
      H154-3 (UDO+) - H155-3 (US1+) Always Below 1 Ω
      H154-5 (UJSS) - H155-5 (USG1) Always Below 1 Ω
      H154-9 (AUXO) - Body ground Always 10 kΩ or higher
      H154-6 (ARO) - Body ground Always 10 kΩ or higher
      H154-7 (ALO) - Body ground Always 10 kΩ or higher
      H154-8 (ASGN) - Body ground Always 10 kΩ or higher
      H154-10 (AGND) - Body ground Always 10 kΩ or higher
      H154-2 (UDO-) - Body ground Always 10 kΩ or higher
      H154-3 (UDO+) - Body ground Always 10 kΩ or higher
      H154-5 (UJSS) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *a

      Front view of wire harness connector

      (to No. 1 Stereo Jack Adapter Assembly)
      *b

      Front view of wire harness connector

      (to Radio Receiver Assembly)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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