Mute Signal Circuit Between Stereo Component Tuner Assembly and Television Display Assembly

NAVIGATION: NAVIGATION SYSTEM (w/ USB Audio System): Mute Signal Circuit between Stereo Component Tuner Assembly and Television Display Assembly
- Mute Signal Circuit between Stereo Component Tuner Assembly and Television Display Assembly

DESCRIPTION

The navigation 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 navigation 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 (STEREO COMPONENT TUNER - TELEVISION DISPLAY)

OK -- REPLACE TELEVISION DISPLAY ASSEMBLY Removal

2. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT TUNER - TELEVISION DISPLAY)

(a) Disconnect the K29 stereo component tuner assembly connector.





(b) Disconnect the W2 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 NAVIGATION RECEIVER ASSEMBLY Removal