AUDIO AND VISUAL SYSTEM Sound Signal Circuit between Radio Receiver and Multi-media Interface ECU

DESCRIPTION

The multi-media interface ECU sends the sound signal to the radio receiver 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 radio receiver or speakers.

WIRING DIAGRAM

A017BPVE03

INSPECTION PROCEDURE

PROCEDURE


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


    1. Disconnect the radio receiver 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
      E25-1 (USD1) - E24-1 (CSLD) Always Below 1 Ω
      E25-2 (URO+) - E24-2 (CDR+) Always Below 1 Ω
      E25-3 (URO-) - E24-3 (CDR-) Always Below 1 Ω
      E25-4 (ULO+) - E24-4 (CDL+) Always Below 1 Ω
      E25-5 (ULO-) - E24-5 (CDL-) Always Below 1 Ω
      E25-1 (USD1) - Body ground Always 10 kΩ or higher
      E25-2 (URO+) - Body ground Always 10 kΩ or higher
      E25-3 (URO-) - Body ground Always 10 kΩ or higher
      E25-4 (ULO+) - Body ground Always 10 kΩ or higher
      E25-5 (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