Toyota RAV4 manuals

Toyota Sienna Service Manual: Mute Signal Circuit between Radio Receiver and Television Display Assembly

Toyota Sienna Service Manual / Audio / visual / Audio and visual system / Diagnostic trouble code chart / Mute Signal Circuit between Radio Receiver and Television Display Assembly

DESCRIPTION

The radio receiver 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 is normal, no sound or, only an extremely small sound, can be produced.

WIRING DIAGRAM

INSPECTION PROCEDURE

1 INSPECT TELEVISION DISPLAY ASSEMBLY

INSPECT TELEVISION DISPLAY ASSEMBLY

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

Standard voltage

Standard voltage

2 CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - TELEVISION DISPLAY)

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - TELEVISION DISPLAY)

  1. Disconnect the radio receiver connector R8 and television display assembly connector T14.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

3 REPLACE TELEVISION DISPLAY ASSEMBLY

  1. Replace the television display assembly and check if the audio system operates normally.

OK: The audio system operates normally

REPLACE RADIO RECEIVER

Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION This circuit sends a signal to the stereo component amplifier to mute noise. Because of that, the noise produced by changing the sound source ceases. If there is an open in the circ ...

AVC-LAN Circuit
DESCRIPTION Each unit of the audio system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication. When a short to +B or short to ground occurs in this ...

Other materials:

Installation
1. INSTALL TIMING CHAIN CASE OIL SEAL (a) Using SST, tap in a new oil seal until its surface is flush with the timing chain case edge. SST 09223-22010, 09506-35010 NOTICE: Keep the lip free from foreign matter. Do not tap on the oil seal at an angle. Make sure that the oil ...

Terminals of ECU
1. CHECK POWER SLIDE DOOR ECU LH Disconnect the P25 and P26 ECU connectors, and check the voltage and resistance of each terminal of the wire harness side connectors If the result is not as specified, there may be a malfunction on the wire harness side.  Reconnect the EC ...

Cleaning and protecting the vehicle exterior
Perform the following to protect the vehicle and maintain it in prime condition: Working from top to bottom, liberally apply water to the vehicle body, wheel wells and underside of the vehicle to remove any dirt and dust. Wash the vehicle body using a sponge or soft cloth, such as a cha ...

В© 2011-2021 Copyright www.tsienna.net