Toyota Sienna Service Manual: Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION
The radio receiver sends a sound signal to the stereo component amplifier through this circuit.
The sound signal that has been sent is amplified by the stereo component 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 or speakers.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER)
- Disconnect the connectors from the radio receiver and stereo component amplifier.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Speaker Circuit
DESCRIPTION
When the vehicle has a built-in type amplifier, a sound signal is
sent from the radio receiver to the
speakers via the "6 Speaker System" circuit.
When the ...
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 ...
Other materials:
Front floor footrest
COMPONENTS
Removal
1. REMOVE FRONT FLOOR FOOTREST
Using a screwdriver, disengage the 2 clips and
remove the footrest.
HINT:
Tape the screwdriver tip before use.
Disengage the clips and then remove the 2 clips
from the footrest.
INSTALLATION
1. INSTALL FRONT FLOOR FOOTREST ...
Parking Brake Switch Circuit
DESCRIPTION
This circuit is from the parking brake switch to the radio and navigation
assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK BRAKE WARNING LIGHT
Check that the brake warning light comes on when the
parking brake is applied and goes off when it is released.
OK:
The ...
Power slide door warning buzzer
INSPECTION
1. INSPECT POWER SLIDE DOOR WARNING BUZZER LH
Check the resistance of the buzzer.
Resistance
If the result is not as specified, replace the buzzer.
NOTICE:
The circuit that causes the buzzer to sound is
built into the slide door ECU, not around the
buzzer.
Direct ...
