Toyota RAV4 manuals

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

Toyota Sienna Service Manual / Navigation / Navigation system / Diagnostic trouble code chart / 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

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 AND NAVIGATION ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)

CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)

  1. Disconnect the radio and navigation assembly R14 connector and television display assembly T14 connector.
  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 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:

Disassembly
1. REMOVE REAR SEAT LEG COVER LH  Remove the 2 screws and seat leg cover. 2. REMOVE REAR SEAT LEG COVER RH  Remove the 2 screws and seat leg cover. 3. REMOVE REAR SEAT LEG SIDE COVER LH  Remove the 2 screws and seat leg side cover. 4. REMOVE LH SEAT REAR SEAT LOCK ...

Front Occupant Classification Sensor RH Collision Detection
DTC B1786 Front Occupant Classification Sensor RH Collision Detection DESCRIPTION DTC B1786 is output when the occupant classification ECU receives a collision detection signal sent by the front occupant classification sensor RH if an accident occurs. DTC B1786 is also output when the front ...

Positioning a floor jack
When using a floor jack, follow the instructions in the manual provided with the jack and perform the operation safely. When raising your vehicle with a floor jack, position the jack correctly. Improper placement may damage your vehicle or cause injury. Front Rear 2WD ...

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