AUDIO AND VISUAL SYSTEM(for Radio and Display Type) Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

The radio and display receiver assembly sends a sound signal to the stereo component amplifier assembly via this circuit.

The sound signal that has been sent is amplified by the stereo component amplifier assembly, and then is sent to the speakers.

If there is an open or short in the circuit, sound cannot be heard from speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver)* or speakers.


WIRING DIAGRAM

B001DAGE06
*a Shielded
*b Radio and Display Receiver Assembly
*c Stereo Component Amplifier Assembly

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)


    1. Disconnect the H63 stereo component amplifier assembly connector.

    2. Disconnect the H49 radio and display receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H49-1 (FR+) - H63-5 (R+) Always Below 1 Ω
      H49-2 (FL+) - H63-3 (L+) Always Below 1 Ω
      H49-5 (FR-) - H63-4 (R-) Always Below 1 Ω
      H49-6 (FL-) - H63-2 (L-) Always Below 1 Ω
      H63-6 (SLD) - Body ground Always 10 kΩ or higher
      H49-1 (FR+) - Body ground Always 10 kΩ or higher
      H49-2 (FL+) - Body ground Always 10 kΩ or higher
      H49-5 (FR-) - Body ground Always 10 kΩ or higher
      H49-6 (FL-) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR