Toyota Sienna Service Manual: Sound Signal Circuit between Radio Receiver and Television Display Assembly
DESCRIPTION
The television display assembly sends a sound signal to the radio receiver through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier or radio receiver (built-in amplifier), and then is sent to the speakers.
If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier, radio receiver, or speakers.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - TELEVISION DISPLAY ASSEMBLY)
- Disconnect the connectors from the television display assembly and radio receiver.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
2 INSPECT TELEVISION DISPLAY ASSEMBLY
- Reconnect the television display assembly connector.
- Check the waveform according to the conditions shown in the table below
Standard
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Sound Signal Circuit between Radio Receiver and Stereo Component
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DESCRIPTION
The radio receiver sends a sound signal to the stereo component amplifier
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The sound signal that has been sent is amplified by the stereo component
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DESCRIPTION
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