Toyota Sienna Service Manual: No Sound can be Heard from Speakers
INSPECTION PROCEDURE
1 CHECK RADIO RECEIVER
- Check radio receiver setting.
- Check that the volume is not set to "0".
- Check that "MUTE" is off.
OK: The volume is not set to "0" and "MUTE" is off.
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Pressing Power Switch does not Turn on System
INSPECTION PROCEDURE
1 CHECK VEHICLE CONDITION
Check that conditions in the cabin are not likely to cause
condensation.
HINT:
This problem occurs when the cabin is humid and the
temperatur ...
Sound Quality is Bad Only when CD is Played (Volume is Too Low)
INSPECTION PROCEDURE
1 REPLACE CD WITH ANOTHER AND RECHECK
Replace the CD with another one and recheck.
Check if the problem recurs using another CD.
OK:
Malfunction disappears.
END ...
Other materials:
Stereo Component Amplifier Power Source Circuit
DESCRIPTION
This circuit provides power to the stereo component amplifier.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT STEREO COMPONENT AMPLIFIER
Disconnect the stereo component amplifier connectors.
Measure the resistance according to the values in the
table below.
Standard ...
On-vehicle inspection
1. INSPECT DRIVE BELT
(a) Visually check the drive belt for excessive wear,
frayed cords, etc.
If any defect is found, replace the drive belt.
HINT:
Cracks on the rib side of a belt are considered
acceptable. Replace the belt if there are any
missing ribs.
2. CHECK POWER STEERING FLUID ...
Using the mechanical key (vehicles with a smart key system)
To take out the mechanical key,
push the release button and take
the key out.
The mechanical key can only be
inserted in one direction, as the
key only has grooves on one side.
If the key cannot be inserted in a
lock cylinder, turn it over and reattempt
to insert it.
After using t ...
