Toyota Sienna Service Manual: Mute Signal Circuit between Radio and Navigation Assembly and Television Display Assembly
DESCRIPTION
The radio and navigation 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 and navigation assembly 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 AND NAVIGATION ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)
- Disconnect the radio and navigation assembly R14 connector and television display assembly T14 connector.
- 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 it operates normally.
OK: The navigation system operates normally.
REPLACE RADIO AND NAVIGATION ASSEMBLY
Sound Signal Circuit between Radio and Navigation Assembly and
Stereo Jack Adapter
DESCRIPTION
The stereo jack adapter sends an external device sound signal to the radio
and navigation assembly
through this circuit.
The sound signal that has been sent is amplified by the ster ...
Mute Signal Circuit between Radio and Navigation Assembly 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 ...
Other materials:
How to use this manual
GENERAL INFORMATION
1. GENERAL DESCRIPTION
(a) This manual is written in accordance with SAE J2008.
(b) Repair operations can be separated mainly in the following 3 processes:
(1) Diagnosis
(2) Removing / Install ...
Bluetooth
When using the Bluetooth® audio system
In the following conditions, the system may not function.
If the portable audio player is turned off
If the portable audio player is not connected
If the portable audio player’s battery is low
There may be a delay if a cellular phone conn ...
Rear speaker
COMPONENTS
ON-VEHICLE INSPECTION
1. INSPECT REAR SPEAKER
HINT:
Remove interior parts so that the rear speaker can be
seen.
Check the speaker installation.
OK:
The speaker is securely installed.
If the result is not as specified, reinstall the rear
speaker.
Vi ...
