AUDIO AND VISUAL SYSTEM (w/o Navigation System) Sound Signal Circuit between Radio Receiver and Multi-media Interface ECU

DESCRIPTION

The multi-media interface ECU sends sound signals to the radio receiver assembly through this circuit.

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, radio receiver assembly or speakers.

WIRING DIAGRAM

A01NDMDE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MULTI-MEDIA INTERFACE ECU)


    1. A01NGE4E08
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)
      *2

      Front view of wire harness connector

      (to Multi-media Interface ECU)

      Disconnect the radio receiver assembly and multi-media interface ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U9-1 (USD1) - G11-1 (CSLD) Always Below 1 Ω
      U9-2 (URO+) - G11-2 (CDR+) Always Below 1 Ω
      U9-3 (ULO+) - G11-3 (CDR-) Always Below 1 Ω
      U9-4 (UGD1) - G11-4 (CDL+) Always Below 1 Ω
      U9-5 (ULO-) - G11-5 (CDL-) Always Below 1 Ω
      U9-1 (USD1) - Body ground Always 10 kΩ or higher
      U9-2 (URO+) - Body ground Always 10 kΩ or higher
      U9-3 (ULO+) - Body ground Always 10 kΩ or higher
      U9-4 (UGD1) - Body ground Always 10 kΩ or higher
      U9-5 (ULO-) - 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