Toyota RAV4 manuals

Toyota Sienna Service Manual: Mute Signal Circuit between Radio and Navigation Assembly and Stereo Component Amplifier

Toyota Sienna Service Manual / Navigation / Navigation system / Diagnostic trouble code chart / 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 circuit, noise can be heard from the speakers when changing the sound source.

If there is a short in the circuit, even though the stereo component amplifier is normal, no sound, or only an extremely small sound, can be produced.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 INSPECT STEREO COMPONENT AMPLIFIER

INSPECT STEREO COMPONENT AMPLIFIER

  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 - STEREO COMPONENT AMPLIFIER)

CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - STEREO COMPONENT AMPLIFIER)

  1. Disconnect the radio and navigation assembly connector R15 and television display assembly connector S11.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

3 REPLACE STEREO COMPONENT AMPLIFIER

  1. Replace the stereo component amplifier and check if it operates normally.

OK: The navigation system operates normally

REPLACE RADIO AND NAVIGATION ASSEMBLY

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 ...

AVC-LAN Circuit
DESCRIPTION Each unit of the navigation 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 ...

Other materials:

Terminals of ECU
1. CHECK POWER BACK DOOR ECU Disconnect the P13 and P14 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 ECU co ...

Other functions
Switching between outside air and recirculated air modes Press . The mode switches between outside air mode ( appears on the display) and recirculated air mode ( appears on the display) each time the button is pressed. Defogging the windshield Defoggers are used to defog the windshield a ...

Operation check
1. DETECTION RANGE MEASUREMENT AND INDICATOR CHECK  Turn the IG switch ON.  Move the shift lever to the R position (when the back sonar and rear clearance sonar is checked).  With front clearance sonar: Move the shift lever to the N position (when the front clearance son ...

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