Toyota Sienna Service Manual: 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 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 radio and navigation assembly or speakers.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - STEREO JACK ADAPTER)
- Disconnect the connectors from the stereo jack adapter and radio and navigation assembly.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Sound Signal Circuit between Radio and Navigation Assembly and
Stereo Component Amplifier
DESCRIPTION
The radio and navigation assembly sends a sound signal to the stereo
component amplifier through this
circuit.
The sound signal that has been sent is amplified by the stereo compone ...
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 ...
Other materials:
Engine
GENERAL MAINTENANCE
HINT:
Inspect these items when the engine is cold.
1. INSPECT DRIVE BELT
HINT:
(See page EM-6)
2. REPLACE SPARK PLUGS
HINT:
(See page IG-8)
3. INSPECT AIR FILTER
(a) Remove the air filter.
(b) Visually check that the air filter is not excessively
damaged or oily ...
Disassembly
1. Remove rear wheel
2. Drain brake fluid
Notice:
wash the brake fluid off immediately if it attaches to
any painted surface.
3. REMOVE REAR BRAKE DRUM SUB-ASSEMBLY
(a) Release the parking brake lever, and remove the
rear brake drum.
HINT:
If the rear brake drum cannot be removed easily,
p ...
Installation
1. INSTALL OCCUPANT CLASSIFICATION ECU
Check that the ignition switch is off.
Check that the negative battery (-) terminal is
disconnected.
CAUTION:
After disconnecting the negative battery
terminal, wait for at least 90 seconds before
starting the operation.
&nbs ...
