AUDIO AND VISUAL SYSTEM(w/ Multi-display) Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU

DTC Code DTC Name
Sound Signal Circuit between Navigation ECU and Multi-media Interface ECU

DESCRIPTION

The multi-media interface ECU sends a sound signal to the display and navigation module display 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, display and navigation module display or speakers.

WIRING DIAGRAM

E199618E04

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - MULTI-MEDIA INTERFACE ECU)

    1. Disconnect the H5 display and navigation module display connector.

    2. Disconnect the H15 multi-media interface ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H5-1 (AGND) - H15-1 (USD1)

      Always

      Below 1 Ω

      H5-3 (VAR+) - H15-2 (URO+)

      Always

      Below 1 Ω

      H5-4 (VAL+) - H15-3 (ULO+)

      Always

      Below 1 Ω

      H5-7 (VA-) - H15-4 (UGD1)

      Always

      Below 1 Ω

      H5-1 (AGND) - Body ground

      Always

      10 kΩ or higher

      H5-3 (VAR+) - Body ground

      Always

      10 kΩ or higher

      H5-4 (VAL+) - Body ground

      Always

      10 kΩ or higher

      H5-7 (VA-) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR