Toyota Sienna Service Manual: 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
- Measure the voltage according to the value(s) in the table below.
Standard voltage
2 CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - TELEVISION DISPLAY)
- Disconnect the radio receiver connector R8 and television display assembly connector T14.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
3 REPLACE TELEVISION DISPLAY ASSEMBLY
- 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 NO. 1 REAR DIFFERENTIAL SUPPORT
(a) Install the No. 1 rear differential support to the rear
differential carrier assembly with the 2 bolts and 2
nuts.
Torque: 85 N*m (867 kgf*cm, 63 ft.*lbf)
HINT:
Hold the bolt and tighten the nut.
2. INSTALL REAR DIFFERENTIAL DYNAMIC DAMPER
...
Reassembly
1. INSTALL BACK DOOR STOPPER LOWER
Install the 2 stoppers with the 4 bolts.
Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf)
2. INSTALL BACK DOOR BASE STOPPER BRACKET
Install the 2 brackets with the 4 bolts.
Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf)
3. INSTALL BACK DOOR WITH MOTOR LOCK ASSEMB ...
Outside vehicle
General maintenance
Check the parts of the vehicle described below on a daily
basis. Performing maintenance checks on the vehicle is the
owner's responsibility. The owner may take the vehicle to a
service center but it is recommended that the owner perform
the checks.
In most cases, special ...
