Toyota 4Runner: Sound Quality is Bad Only when CD is Played (Volume is Too Low)

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Audio / Video / Audio And Visual System / Sound Quality is Bad Only when CD is Played (Volume is Too Low)

PROCEDURE

1.	REPLACE CD AND RECHECK

(a) Replace the CD with a known good one and check that the malfunction disappears.

OK:

Malfunction disappears.

END

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

No Sound can be Heard from Speakers

PROCEDURE 1. CHECK AUDIO SETTINGS (a) Set volume, fader and balance to the initial values and check that sound is normal. OK: Audio system returns to normal. HI ...

CD cannot be Ejected

PROCEDURE 1. CHECK OPERATION (a) Press the disc eject switch of the radio and display receiver assembly for 5 seconds or more and check that the CD is ejected. OK: ...

Other materials about Toyota 4Runner:

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Remove the main body ECU (multiplex network body ECU) (See page ). (b) Measure the voltage and resistance according to the value(s) in the ...

Removal
REMOVAL PROCEDURE 1. REMOVE FRONT BUMPER COVER (w/o Intuitive Parking Assist System) (See Page ) 2. REMOVE FRONT BUMPER COVER (w/ Intuitive Parking Assist System) (See Page ) 3. REMOVE HIGH PITCHED HORN ASSEMBLY 4. REMOVE RADIATOR GRILLE BRACKET ...