Mute Signal Circuit between Multi-media Interface ECU and Television Display Assembly

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Mute Signal Circuit between Multi-media Interface ECU and Television Display Assembly
- Mute Signal Circuit between Multi-media Interface ECU and Television Display Assembly

DESCRIPTION

The radio receiver assembly controls the volume according to the MUTE signal from the television display assembly.

The MUTE signal is sent to reduce noise and a popping sound generated when switching the mode etc. If there is an open in the circuit, noise can be heard from the speakers when changing the sound source. If there is a short in the circuit, even though the radio receiver assembly is functioning normally, no sound or only an extremely faint sound can be heard.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK TELEVISION DISPLAY ASSEMBLY

(a) Measure the voltage according to the value(s) in the table below.





Standard Voltage:





NG -- CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - MULTI-MEDIA INTERFACE ECU)

OK -- REPLACE TELEVISION DISPLAY ASSEMBLY Removal

2. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - MULTI-MEDIA INTERFACE ECU)

(a) Disconnect the H111 multi-media interface ECU connector.





(b) Disconnect the U2 television display assembly connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MULTI-MEDIA INTERFACE ECU Removal