Toyota Sienna Service Manual: Noise Occurs
INSPECTION PROCEDURE
1 NOISE CONDITION
- Check in which direction the noise comes from (front left or right, or rear left or right).
- Check in which direction the noise comes from.
OK: The location of the noise source can be determined
2 CHECK SPEAKERS
- Check the installation conditions of the speaker units that are located near the noise source and that there are no cracks, scratches, deformation, or other failures.
Result
3 CHECK NOISE CONDITIONS
- Check the noise condition.
HINT: The radio has a noise prevention function to reduce noise when listening to the radio. If a loud noise occurs, check whether the ground at the antenna mounting base and the noise prevention unit are installed and wired correctly
HINT:
- In the chart's left column, find the situation that matches the customer's complaint. Then, in the right column, find the part that is causing the noise. Check the noise filter on or for the part.
- To save time and avoid a misdiagnosis, first make sure that the noise is not coming from outside the vehicle.
- Noise should be removed in descending order of loudness.
- Setting the radio to a frequency where no signal is received may make recognition of the noise problem easier.
OK: The noise source can not be determined.
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Disc cannot be Played/ No Playable Files/ Copyright Protection Error/ Disc
cannot be Played/ No Playable Files/ Copyright Protection Error
DTC 62-7D Disc cannot be Played
DTC 62-7E No Playable Files
DTC 62-7F Copyright Protection Error
DTC 63-7D Disc cannot be Played
DTC 63-7E No Playable Files
DTC 63-7F Copyright Protection Error
...
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 ...
Other materials:
High beam automatic turning on or off conditions
When all of the following conditions are fulfilled, high beam will be
automatically turned on (after approximately 1 second):
Vehicle speed is above approximately 20 mph (32 km/h).
The area ahead of the vehicle is dark.
There are no oncoming or preceding vehicles with headlights or
tail
...
Reassembly
1. INSTALL TRANSFER DRIVEN PINION REAR BEARING
(a) Using SST(s) and a press, install the transfer driven
pinion rear bearing outer race to the transfer case.
SST 09950-60010 (09951-00620), 09950-70010
(09951-07150)
NOTICE:
Place something like wood blocks under the
case to keep its level. ...
Data list / active test
1. DATA LIST
HINT:
Using the DATA LIST displayed on the intelligent tester,
you can read the value of the switch, sensor, actuator,
etc. without parts removal. Reading the DATA LIST as
the first step of troubleshooting is one way to shorten the
labor time.
Connect the intelligent tester to ...
