Toyota Tacoma manuals

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

GO TO STEP 3

OK

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

A

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:

Maintenance data (fuel, oil level, etc.)
Dimensions 2WD models except PreRunner *: Unladen vehicle 4WD models and PreRunner (except Regular Cab models) *: Unladen vehicle *: Unladen vehicle Vehicle capacity weight 2WD models except PreRunner *: Installing accessories in addition to those installed at the factory increase ...

Inspection
INSPECTION PROCEDURE 1. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY (a) Using a dial indicator, measure the inside diameter of the front oil pump body sub-assembly bushing. Maximum inside diameter: 38.138 mm (1.50 in.) If the inside diameter is more than the maximum inside d ...

Skid Control Buzzer Circuit (C1AA7)
DESCRIPTION The forward recognition camera operates the pre-collision warning by sending a buzzer request signal to the skid control buzzer. If the forward recognition camera detects a malfunction in the skid control buzzer circuit, it will output DTC C1AA7. DTC No. Dete ...

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