Toyota Tacoma (2015-2018) Service Manual: Noise Occurs

Toyota Tacoma (2015-2018) Service Manual / Navigation / Multi Info Display / Navigation System / 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.

GO TO STEP 3

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

REINSTALL SPEAKER

REMOVE FOREIGN OBJECT

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.

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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) Display the "Sound Settings" screen. (b) Set volume, fader and balance to the initial values and check that sound i ...

Other materials:

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL FRONT OIL PUMP OIL SEAL (a) Using SST and a hammer, install a new front oil pump oil seal to the front oil pump body sub-assembly. SST: 09350-30020 09351-32140 Standard depth: -0.3 to 0.3 mm (-0.0118 to 0.0118 in.) ...

Indicator Circuit
DESCRIPTION The forward recognition camera sends indicator illumination request signals to the combination meter assembly via CAN communication. CAUTION / NOTICE / HINT NOTICE: When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly wh ...

Passenger Side Buckle Switch Circuit Malfunction (B1771)
DESCRIPTION The passenger side buckle switch circuit consists of the occupant detection ECU and the front seat inner belt assembly RH. DTC B1771 is recorded when a malfunction is detected in the passenger side buckle switch circuit. Troubleshoot DTC B1771 first when DTCs B1771 and B1795 are o ...