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
DTC 63-7D Disc cannot be Played
DTC 63-7E No Playable Files
DTC 63-7F Copyright Protection Error
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
63-7 ...
Pressing Power Switch does not Turn on System
INSPECTION PROCEDURE
1 CHECK CABIN
Check that conditions in the cabin are not likely to cause
condensation.
HINT:
This problem occurs when the cabin is humid and the
temperature rapidly ch ...
Other materials:
Installation
1. INSTALL REAR AXLE BEAM DAMPER
(a) Install the rear axle beam damper to the rear axle
beam assembly.
2. INSTALL REAR AXLE CARRIER BUSH LH
(a) Align the matchmarks on the axle beam assembly
with the 2 notches of a new bushing and temporarily
install the bushing to the rear axle beam assem ...
Removal
1. SEPARATE BATTERY NEGATIVE TERMINAL
2. REMOVE FRONT DOOR SCUFF PLATE LH
3. REMOVE COWL SIDE TRIM BOARD LH
4. REMOVE INSTRUMENT PANEL FINISH PANEL SUBASSEMBLY
LOWER LH
(a) Remove the 2 bolts and instrument panel finish
panel sub-assembly lower LH.
5. REMOVE INSTRUMENT PANEL SAFETY PAD
INSER ...
Throttle / Pedal Position Sensor / Switch "A"
HINT:
These DTCs relate to the Throttle Position (TP) sensor.
DESCRIPTION
HINT:
This ETC (Electrical Throttle Control System) does not use a throttle cable.
The Throttle Position (TP) sensor is mounted on the throttle body, and detects
the opening angle of the
throttle valve. This sens ...
