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:
Rear evaporator temperature sensor circuit
DESCRIPTION
The rear evaporator temperature sensor is installed on the rear evaporator.
It detects the rear evaporator
temperature. The sensor sends a signal to the A/C amplifier. The resistance of
the rear evaporator
temperature sensor changes in accordance with the rear evaporator temperatu ...
Removal
HINT:
Replace the RH side using the same procedures as for the
LH side.
1. REMOVE FRONT WHEEL
2. REMOVE FRONT AXLE HUB LH NUT (See page DS-
5)
3. SEPARATE SPEED SENSOR FRONT LH (See page
DS-5)
4. SEPARATE FRONT DISC BRAKE CALIPER ASSEMBLY LH
(a) Remove the 2 bolts and separate the front ...
Power back door warning buzzer
INSPECTION
1. POWER BACK DOOR WARNING BUZZER
Check the resistance of the buzzer.
Resistance
If the result is not as specified, replace the buzzer.
NOTICE:
The circuit that causes the buzzer to sounds
is built into the back door ECU, not around
the buzzer.
Directly applying ...
