Toyota Sienna Service Manual: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION
The stereo jack adapter sends an external device 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, 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 - STEREO JACK ADAPTER)
- Disconnect the connectors from the stereo jack adapter and radio receiver.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
*1: 10 Speaker System
*2: 6 Speaker with Rear Entertainment System
*3: 6 Speaker without Rear Entertainment System
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
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 ...
Mute Signal Circuit between Radio Receiver 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:
Favorites list setting
Up to 15 contacts (maximum of 4 numbers per contact) can be registered
in the favorites list.
Registering the contacts in the favorites list
Select “Add Favorite”.
Select the desired contact to add to the favorites list.
Dimmed contacts are already stored as a favorite.
Check that a ...
Rear Occupant Classification Sensor LH Collision
Detection
DTC B1787 Rear Occupant Classification Sensor LH Collision
Detection
DESCRIPTION
DTC B1787 is output when the occupant classification ECU receives a collision
detection signal sent by
the rear occupant classification sensor LH if an accident occurs.
DTC B1787 is also output when the front s ...
Room light assembly
ON-VEHICLE INSPECTION
1. ROOM LIGHT ASSEMBLY NO.2
Check that the resistance exists between the
terminals.
Resistance:
Below 1 Ω
2. INTERIOR DOME LIGHT SWITCH ASSEMBLY
Check that there is resistance between the
terminals at each switch position as shown in the
cha ...