Toyota 4Runner: Poor Sound Quality in All Modes (Low Volume)

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Audio / Video / Audio And Visual System / Poor Sound Quality in All Modes (Low Volume)

PROCEDURE

1.	CHECK AUDIO SETTINGS

(a) Set "Treble", "Mid" and "Bass" to the initial values and check that sound is normal.

OK:

Malfunction disappears.

HINT:

Sound quality adjustment measures vary according to the type of amplifier.

END

2.	COMPARE WITH ANOTHER VEHICLE OF SAME MODEL

(a) Compare with another vehicle of the same model which does not have trouble to see if there is any difference in the sound quality.

OK:

No difference is found.

END

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Screen Flicker or Color Distortion

PROCEDURE 1. CHECK DISPLAY SETTING (a) Reset display settings (contrast, brightness) and check that the screen appears normal. OK: The display returns to normal. ...

Voice Guidance does not Function

PROCEDURE 1. CHECK VOICE GUIDANCE SETTING (a) Display the "Voice Settings" screen. (b) Check if the "Voice Recognition Prompts" is not "Off& ...

Other materials about Toyota 4Runner:

Short in Motor LH (11,12)
DESCRIPTION When there is a short in the side auto step motor circuit, the side auto step controller ECU assembly halts the operation of the automatic running board. DTC No. Detection Condition Trouble Area ...

Installation
INSTALLATION PROCEDURE 1. INSTALL PROPELLER SHAFT ASSEMBLY (a) Align the matchmarks on the propeller shaft flange and differential flange. (b) Install the propeller shaft assembly with the 4 washers, 4 bolts and 4 nuts. Torque: 88 N·m {899 kgf·cm, 65 ...