NAVIGATION SYSTEM 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 the speakers even if there is no malfunction in the stereo component amplifier assembly or speakers.

WIRING DIAGRAM

A01MH6TE17
*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 G59 radio and display receiver assembly connector.

    2. Disconnect the P49 stereo component amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G59-1 (FR+) - P49-5 (R+) Always Below 1 Ω
      G59-5 (FR-) - P49-4 (R-) Always Below 1 Ω
      G59-2 (FL+) - P49-3 (L+) Always Below 1 Ω
      G59-6 (FL-) - P49-2 (L-) Always Below 1 Ω
      P49-5 (R+) - Body ground Always 10 kΩ or higher
      P49-4 (R-) - Body ground Always 10 kΩ or higher
      P49-3 (L+) - Body ground Always 10 kΩ or higher
      P49-2 (L-) - Body ground Always 10 kΩ or higher
      P49-6 (SLD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK
    NG