Toyota 4Runner: Noise Occurs
PROCEDURE
|
1. |
NOISE CONDITION |
(a) Check from which direction the noise comes (front left or right, or rear left or right).
OK:
The location of the noise source can be determined.
| NG | .gif) |
GO TO STEP 3 |
|
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2. |
CHECK SPEAKERS |
(a) 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 |
Proceed to |
|---|---|
|
No malfunction is found. |
A |
|
A speaker is installed incorrectly. |
B |
|
Foreign matter is in the speaker. |
C |
|
A speaker cone paper is broken. |
D |
| B | |
REINSTALL SPEAKER |
| C | |
REMOVE FOREIGN MATTER |
| D | |
REPLACE SPEAKER |
|
|
3. |
CHECK NOISE CONDITIONS |
(a) 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.
|
Condition under which Noise Occurs |
Noise Source |
|---|---|
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Noise increases when the accelerator pedal is depressed, but stops when the engine is stopped. |
Generator |
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Noise occurs during A/C or heater operation. |
Blower motor |
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Noise occurs when the horn switch is pressed and released or when pressed and held. |
Horn |
|
Noise occurs synchronously with the turn signal blinking pattern. |
Flasher |
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Noise occurs during window washer operation. |
Washer |
|
Noise occurs during wiper operation. |
Wiper |
|
Noise occurs when the brake pedal is depressed. |
Stop light switch |
|
Others |
Static electricity |
HINT:
- In the left column of the table, find the situation that matches the customer's complaint. Then, in the right column, find the part that is causing the noise. Check the respective noise filter.
- To save time and avoid a misdiagnosis, first make sure that the noise is not coming from outside the vehicle.
- Troubleshoot noises 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 cannot be determined.
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE NOISE SOURCE |
Traffic Information is not Displayed
CAUTION / NOTICE / HINT
NOTICE:
Traffic information requires payment. An "XM Nav Traffic" contract must
be made between the satellite radio company and the user. If the contrac ...
No Sound can be Heard from Speakers
PROCEDURE
1.
CHECK AUDIO SETTINGS
(a) In sound output setting mode, set volume, fader and balance to the initial
values and check that the sound is normal.
OK:
A ...
Other materials about Toyota 4Runner:
Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for both the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE
1. INSTALL FOG LIGHT ASSEMBLY LH
(a) Attach the 2 guides.
(b) Install the fog ligh ...
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for both the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE
1. INSTALL NO. 3 OUTSIDE MOULDING RETAINER
2. INSTALL REAR DOOR OUTSIDE MOULDING L ...
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