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

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Navigation / Multi Info Display / Navigation System / Poor Sound Quality in All Modes (Low Volume)

PROCEDURE

1.	CHECK AUDIO SETTINGS

(a) Set treble, middle and bass to the initial values and check that the 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. ...

Cursor or Map Rotates when Vehicle Stopped

PROCEDURE 1. CHECK CONDITION (a) Check with the customer if the vehicle has been turned by a turntable. OK: Vehicle has not been turned by a turntab ...

Other materials about Toyota 4Runner:

Adjustment
ADJUSTMENT PROCEDURE 1. STEERING OFF CENTER ADJUSTMENT PROCEDURE HINT: This is the adjustment procedure for when the steering is off center. (a) Check if the steering wheel is off center. (1) Apply masking tape to the top center of the steerin ...

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL FRONT OIL PUMP OIL SEAL (a) Using SST and a hammer, tap in a new oil seal. SST: 09350-30020 09351-32140 HINT: Make sure the oil seal end is flush with the outer edge of the pump body. ...