Toyota Tacoma (2015-2018) Service Manual: 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|
Result |
Proceed to |
|---|---|
|
No malfunction is found |
A |
|
A speaker is installed incorrectly |
B |
|
Foreign objects are in the speaker |
C |
|
A speaker cone paper is broken |
D |
| B | |
REINSTALL SPEAKER |
| C | |
REMOVE FOREIGN OBJECT |
| 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 |
|---|---|
|
Noise increases when the accelerator pedal is depressed, but stops when the engine is stopped. |
Generator |
|
Noise occurs during A/C or heater operation. |
Blower motor |
|
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 |
|
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 |
Satellite Radio Broadcast cannot be Selected or After Selecting Broadcast, Broadcast
cannot be Added into Memory
CAUTION / NOTICE / HINT
NOTICE:
Some satellite radio broadcasts require payment. A contract must be made between
a satellite radio company and the user. If the contract expires, it will not be
p ...
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:
Air Mix Control Servo Motor
Inspection
INSPECTION
PROCEDURE
1. INSPECT AIR MIX CONTROL SERVO MOTOR (for Manual Air Conditioning System)
(a) Inspect the servo motor operation.
Text in Illustration
*a
0 V
*b
6V
...
Installation
INSTALLATION
PROCEDURE
1. INSTALL FLYWHEEL HOUSING SIDE COVER
(a) Install the flywheel housing side cover to the cylinder block sub-assembly.
2. INSTALL STARTER ASSEMBLY
(a) Install the starter assembly with the 2 bolts.
Torque:
37 N·m {377 kgf·cm, 27 ft·lbf}
(b) Connect the engine wire ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL AIR CONDITIONING UNIT ASSEMBLY
(a) Temporary install the air conditioning unit assembly.
(b) Insert the bracket hook into the holes of the reinforcement bracket, and
temporary install the instrument panel reinforcement assembly.
(c) Install the instrument p ...
