AUDIO AND VISUAL SYSTEM Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

The multi-media module receiver assembly sends the sound signal to the stereo component amplifier assembly through 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, multi-media module receiver assembly, DCM (telematics transceiver)* or speakers.


WIRING DIAGRAM

A01GZO0E07

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)


    1. Disconnect the L174 multi-media module receiver assembly connector.

    2. Disconnect the R108 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
      L174-2 (MI+) - R108-5 (MO+) Always Below 1 Ω
      L174-3 (MI-) - R108-6 (MO-) Always Below 1 Ω
      L174-4 (SLDI) - R108-7 (SLDO) Always Below 1 Ω
      L174-5 (MO+) - R108-2 (MI+) Always Below 1 Ω
      L174-6 (MO-) - R108-3 (MI-) Always Below 1 Ω
      L174-7 (SLDO) - R108-4 (SLDI) Always Below 1 Ω
      L174-1 (WUO) - R108-8 (WUI) Always Below 1 Ω
      L174-2 (MI+) or R108-5 (MO+) - Body ground Always 10 kΩ or higher
      L174-3 (MI-) or R108-6 (MO-) - Body ground Always 10 kΩ or higher
      L174-4 (SLDI) or R108-7 (SLDO) - Body ground Always 10 kΩ or higher
      L174-5 (MO+) or R108-2 (MI+) - Body ground Always 10 kΩ or higher
      L174-6 (MO-) or R108-3 (MI-) - Body ground Always 10 kΩ or higher
      L174-7 (SLDO) or R108-4 (SLDI) - Body ground Always 10 kΩ or higher
      L174-1 (WUO) or R108-8 (WUI) - 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