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:
Vehicle Position Mark Deviates Greatly
INSPECTION PROCEDURE
1 CHECK GPS MARK
Check that the GPS mark is displayed.
OK:
GPS mark is displayed
2 CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE)
Enter the "Navigation Check" mode (Vehicle Sensors).
While driving the vehicle, compare the "Speed" i ...
Operation check
1. DOOR LOCK FAIL-SAFE
When a malfunction in the door control switch
(manual switch, interlocked with key operation) has
been detected, door lock/unlock operation becomes
disabled.
2. CHECK ELECTRICAL DOOR LOCK OPERATION
Check the basic function.
Check that a ...
Occupant Classification Sensor Power Supply
Circuit Malfunction
DTC B1793 Occupant Classification Sensor Power Supply
Circuit Malfunction
DESCRIPTION
The occupant classification sensor power supply circuit consists of the
occupant classification ECU and
the occupant classification sensors.
DTC B1793 is recorded when a malfunction is detected in the occu ...
