AUDIO AND VISUAL SYSTEM (for Radio and Display Type with Intuitive Parking Assist System) Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

The navigation ECU sub-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

A011YCAE05

INSPECTION PROCEDURE

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)

    1. Disconnect the navigation ECU sub-assembly connector.

    2. Disconnect the 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
      I69-5 (R+) - I64-1 (FR+) Always Below 1 Ω
      I69-4 (R-) - I64-5 (FR-) Always Below 1 Ω
      I69-3 (L+) - I64-2 (FL+) Always Below 1 Ω
      I69-2 (L-) - I64-6 (FL-) Always Below 1 Ω
      I69-6 (SLD) - Body ground Always 10 kΩ or higher
      I69-5 (R+) - Body ground Always 10 kΩ or higher
      I69-4 (R-) - Body ground Always 10 kΩ or higher
      I69-3 (L+) - Body ground Always 10 kΩ or higher
      I69-2 (L-) - Body ground Always 10 kΩ or higher
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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